2009 Chevy Silverado 1500 5.3

[rough lotus]

Just bought a turbo for my truck. I picked it up for 150 and it has been sitting for a while. I’m planning on rebuilding it and selling it or just slap it in my truck. It’s an ITS turbo. Need help identifying more info for it.

[onyx slate]

https://www.ebay.ca/itm/364262955764

[brave solar]

i wouldnt just "slap" a turbo on your truck... theres a lot of stuff needed like a big intercooler, somewhere to mount it, pressurized oil, etc

[rough lotus]

I know that there is more then just slapping it on. This is just my first time doing something more then simple things like Coils, injectors, plugs and other engine mods besides a tune for better drive ability. Also before i do anything im getting a transmission that can handle 400-700 horse. even though i plan on keeping it below 500. Just need advice on how to get it done and what kits i can find for it. Since ITS is no longer a operational company finding componets are hard since i don't know what im looking at or if they might even fit.

[onyx slate]

Can you run boost safely? What is your CPR

Do you know if your turbo can handle the power you want? Also did you check if you have to drill ur block for lines?

Also remember you gotta upgrade ur cooling and oiling system

New valve-train too with new cams also

[rough lotus]

ideally I'm sending this to a performance shop once i get a proper trans and drivetrain components in. Or i will buy a standalone engine and build that from the ground up myself. I just wanna know what i may be getting myself into if i go for it.

[onyx slate]

Ur getting yourself into an alt + ctrl + delete on your bank account

As with pretty much any engine rebuild. I can attest to that

If you are gonna go down that path. Start with getting a different turbo lol

The one you have rn will probably blow up

I would honestly go twin. You will have a better equal exhaust flow

Especially since it is a V

[brave solar]

u do, the 5.3 uses a filter on the upper oilpan so you can either drill into the pan gallery (horrible idea), the cooler (bad idea too) or the block, also a bad idea

its only a good idea if u have an external oil filter housing/cooler

[rough lotus]

How much do you think I could sell it for? Bought it from a friend for 150 and it was working before he took it off his truck.

[onyx slate]

4 packs of beer or something

[onyx slate]

Yep

Plus with a new bore, new valve-train instal, porting, and assembly of the bottom end this guy is looking at 4-5k (CAD) in labour alone

I heard aftermarket Chevy shizz is hella cheap compared to other engines. So at least he will probably only be paying 2k CAD for a complete bottom end parts, and 2k CAD for the top.

And for exhaust and turbo setup, he could go eBay crap and pay only 1-1.5k cad or go with proper shizz and spend 3-4K CAD. Idk about wiring (coils, and ecu, etc) I am gonna assume 3k CAD on that cause I would get a different ecu. For injectors. Like 600 Cad.

So like 15k CAD on the engine, will probably come out to 20k in the end though. Not bad. Way cheaper than my 2.5L 😂

Swear it’s gonna be like 25-30k in the end or some bullshit for mine 💀

[onyx slate]

@rough lotus Didn’t think you ask for an estimate, but here ya go. Obviously left out some shit like the oil pump upgrade and some other stuff. But it’s a rough estimate of the engine rebuild.

[brave solar]

you can literally throw a procharger on a 5.3 stock and just keep the stock rev limiter and be atl like 500 wheel with e85, they are great engines but they are not turbo engines

[onyx slate]

Ya but to keep it reliable? Also I build for pump gas, premium. E85 is cheating, but if you want hp as soon as possible it works, can’t tell you how long ur bottom end will hold it though on stock.

[onyx slate]

Also a turbo is a lot different than a centrifugal supercharger. A supercharger will match revs and be safer on high cpr engines.

If you running a turbo you need to change ur cpr

Also u need low cpr to run a dece bit a boost. Idk if you can run much on the stock NA cpr u got

[brave solar]

honesty e85 in texas is pump almost everywhere, 91 tunes are great too, procharger i havent seen any reliablility issues

[brave solar]

as in comrpession ratio? u can keep stock stroke and bore just the 5.3 dont like the turbos to begin with

[onyx slate]

Ya cause it matches with revs. With a turbo it’s a different story

[onyx slate]

Yes, exactly. If you go turbo. U need to change the cpr

[brave solar]

ya i mean people run stock compression ratio on the 5.3 with a turbo and it will last

[onyx slate]

Piston ring clearances?

[brave solar]

but actually making a fast car its not the best

[onyx slate]

Over time it will run into problems for sure

[brave solar]

wym by ring clearances

compression rings usually have no issues on port

di and boost yes

[onyx slate]

With boost ring clearances should be adjusted differently, especially end gaps.

[brave solar]

i mean u can

usually 5.3 guys run stock block til they hit 650 wheel

[onyx slate]

That is why I would run different pistons for the long run: proper clearances, larger bore, and low cpr. It will run more reliable and last way longer

[onyx slate]

And civic buddies put practically Home Depot clay type cement in their blocks to make it closed deck. Doesn’t mean it’s the right way to do things or the way to make it reliable

[brave solar]

i mean 5.3 is already pretty low cpr... blowby isnt bad until ur at like 20 pounds and u can make 650 on 15 pounds on the 5.3 on 91 and cam

[onyx slate]

Just because it works, doesn’t mean it’s the right way to do things or that it will last. U can by proper filler to make blocks closed deck.

[onyx slate]

He wants like 700hp

To 800

That is a full rebuild

Or no, idk. I would still build it so it runs reliable at 500whp. If he wants to go the supercharger route. I would still at least put in a new valve train and pistons. In the long run the ring clearances will not age well. Plus lower cpr, means it can run super safe under boost and be reliable

[brave solar]

i forgot this dude was even wanting to build his shit

honestly blowby aint bad til 20 lbs tho and thats true for a lot of engines, the stock internals on a 5.3 can hold 700 no issues. After that its just forged crank, rods, pistons, good full floating pins, ringset, and sleeves, cam, built heads, and ur good on internals for 2 grand in wheel horse. The 5.3 doesnt like over 6500 on the heads without building them (springs) because valves float

[brave solar]

its already at 9.5, i wouldnt ever go lower. Usually u only wanna lower cpr if ur at like 12 or 13 because thats already super hot from engine compression then adding turbo compression its impossible to keep iat and motor temps cool

[onyx slate]

I mean on my piston sheet there are like over different ring gap adjustments for what ur running. So I doubt it is meant to run 20lbs.

With how cheap it is to build an engine like that, at least on the bottom end. Super cheap. A whole bottom end kit is like 2k! I would just rebuild it

[brave solar]

what i mean is that ringset doesnt get issues with blowby until 20, n/a rings arent meant to prevent a whole ton of blowby to begin with

[onyx slate]

Man ring gap should be different. His engine is gonna run hotter. It is gonna expand and contract differently than stock, and it is also going to be under the pressure of boost

I would get the proper clearances

[brave solar]

well ya on a turbo

[onyx slate]

Even on a supercharger

[brave solar]

none of the ls engines run well on turbos stock block, however stick a pro or super on there and it loves that shit

they are meant to run well on linear power just like the lt engines

[onyx slate]

What is a centrifugal chargers normal boost, like 10-13lbs?

Even less is still pressure on the rings

[brave solar]

like 14 or 15 pounds

and then guys throw a pulley on it like a supercharger

[onyx slate]

Well that is how a centrifugal supercharger works

[brave solar]

im aware

[onyx slate]

Also with talking about superchargers, do you need to delete ac or ps to fit it on those chassis? I am gonna run twin down the road and there ain’t proper room so I just deleted my ps and hvac. Will he have to do the same? Or is there a proper bracket and pulley kit

Those bays are pretty big I assume there is a bracket kit and no deletes needed

[brave solar]

just depends on what u want

ive seen guys with the compressor still on em running a procharger

[onyx slate]

Ya so I assume there is a bracket and pulley kit

[brave solar]

usually

[rough lotus]

@onyx slate @brave solar so what ya saying is that i got a cool paper weight. and that i should just go pulley driven if i want to make power out of a stock 5.3

[foggy pollen]

GG @rough lotus, you just advanced to level 1! Chat more to level up and earn top roles!

[brave solar]

ya pretty much

[onyx slate]

ya pretty much

[cinder spindle]

Lmfao no

[cinder spindle]

No

[onyx slate]

Ya it kinda is. If he wants to go turbo he should go twin with a CPR change or go with a pro charger

[cinder spindle]

Lol wtf

[onyx slate]

Ya a centrifugal supercharger is a better option imo

[cinder spindle]

Turbo is cheaper and 10x better for keeping a stock engine alive

[onyx slate]

no it’s the other way around

[cinder spindle]

Twins are dumb because it's added cost, harder to package, and you'll make the same power with much longer spool times

[onyx slate]

The stock engine will last longer with a centrifugal super charger

[cinder spindle]

You're trying to tell that to the wrong person

[onyx slate]

Also centrifugal superchargers are easier to setup

Than turbo

[cinder spindle]

The is the only advantage of any supercharger

Unless you're playing with snout driven shit

[onyx slate]

Nope; easier to setup, boost match with revs so safer on higher CPR or na engines, the engine also does not need exhaust modifications compared to a turbo.

[cinder spindle]

All I can picture is the yapping cat meme

[onyx slate]

Good for u

Did I say anything wrong

[cinder spindle]

Yes

[onyx slate]

What then

[cinder spindle]

This

[cinder spindle]

This

[onyx slate]

Well it’s true, the boost matches with revs

So it is safer on higher cpr engines

Its kinda common knowledge lol

[cinder spindle]

You'd think you'd know the common LS knowledge being that sloppy has existed for years

[onyx slate]

It’s common knowledge on all NA engines. They will perform better and safer with a supercharger because of the rev matching

[onyx slate]

Twin is good idk what u mean either

It’s equal exhaust pressure

[cinder spindle]

Toss your turbo in the bin, diesel turbos come with too small of a turbine to work well on medium sized gas engines. Google "sloppy mechanics wiki" and go ham. Gap rings, buy a better turbo, don't waste your money on china cast manifolds, pick a good injector, and take it to a good tuner. When you decide you want more than 400whp you can move to stuff like cam/springs/pushrods

[cinder spindle]

Do you have any idea what a torque spike is?

Take that "common knowledge" back to Reddit

[onyx slate]

Isn’t that what we were saying?

[cinder spindle]

No, keep the single turbo plan

[onyx slate]

Exhaust pressure will be equal and you can have more boost quicker.

[cinder spindle]

Go try it

I have, you're big wrong. And by the time you have a setup that spools worth a damn you lose top end

[onyx slate]

Wdym, with proper sizing u shouldn’t have a problem especially if it is properly cammed

[cinder spindle]

Have you ever built something and planned on making more than, say, 400whp?

[onyx slate]

I mean my engine is in the shop rn. Being built for 650 whp

[cinder spindle]

'being built' got it

[onyx slate]

Hey I can give u the sheet and receipts

If u want it and pictures

[cinder spindle]

I don't mind handing out info every now and then but don't be spewing wrong shit you've found from simpletons on the internet

[onyx slate]

It’s not wrong though lmao

[cinder spindle]

Oki

[onyx slate]

With the proper setup twin turbo on a v8 is legit the best option imo

[cinder spindle]

Is that why it takes twice as long to spool the fast twin turbo cars?

[onyx slate]

Dude twins spool faster if they are properly sized

[cinder spindle]

I love it when a buddy finishes a waste of money twins build and learns that it won't build boost with the transbrake engaging second

[onyx slate]

That is the main benefit of twins, same psi, quicker spool

Two smaller turbos as opposed to a larger single

If you want the best of body worlds, then compound is a route to go too. But twin medium sized is the way I would go compared to a large single

If like lag and find it fun, hey larger diesel turbos seems fun

[cinder spindle]

Okay, I'll leave you with a quiz then say you have a 320ci or so engine that will spin 7,000 rpm. Say it can use every bit of 120lb/min. Do your best to explain to me how splitting the exhaust flow will spool two turbos capable capable of a comparable 120lb/min single. Especially when the biggest factor to spool speed is air velocity, second being heat

When you're done I'll send you a link

[onyx slate]

Okay and I will leave u with a quiz. If legit the entire internet says twins is the best way to go on V oriented engine; and aftermarket crate engine builders build them in twin; why would they not use single instead

[cinder spindle]

Lol most people do. Especially people who are in it competitively

It's simple. You either "size it correctly" and lose top end, or you use a bigger single and have a more efficient setup, and if you're not a moron they'll spool better than twins that will flow the same amount of air

[onyx slate]

Dude the top end amount u lose is fine compared to the amount u gain at low end. Not everyone wants to do rollers; and saying that twin is both good for track, drag and rollers.

[cinder spindle]

Weee real world data

You can keep arguing if you want but you're wrong

[onyx slate]

Dude are the twins running less psi

[cinder spindle]

Lmfao

Did you miss the part where a single is more efficient?

[onyx slate]

It is not more efficient, with twins u are utilizing both exhaust gases

[cinder spindle]

👍 I can't help you

[onyx slate]

Do an equal psi test

[cinder spindle]

Lmfao

[onyx slate]

And I can’t help u either

[cinder spindle]

You really couldn't if you wanted to

[onyx slate]

Legit the whole point. Equal psi with less spool build up

[cinder spindle]

Go try to apply it in the real world

[onyx slate]

That is why twins were a huge thing in the beginning of their introduction; especially on older shitty ceramic turbos

[onyx slate]

Ya legit manufactures twin charge their vehicles from factory; and they look for efficiency lol

[cinder spindle]

Dudes trying to argue this with someone who's spent thousands of hours blueprinting engines and spent thousands of hours learning about how power is made

[cinder spindle]

Ever wonder why they never have a strong top end?

[onyx slate]

I could care less, from my knowledge and what I have learned. I am sticking with it

[onyx slate]

Because efficiency and bottom end.

Less lag than a larger turbo

[cinder spindle]

Not if you sacrifice turbo size with the single lmfao

Then you get a really hot, useless setup. Kinda like op is planning with that diesel turbo

Still would spool faster. It will every time

[onyx slate]

20lbs of boost will come on faster on a twin setup than 20lbs of boost on a single

The smaller the turbo, the easier it is the spool

I don’t get this argument

[cinder spindle]

Me, either

[onyx slate]

Don’t twins run cooler too?

[cinder spindle]

To an extent. It gets to a point where they'll keep the engine bay hotter

[onyx slate]

Dude that is the stupid point. Legit different psi. What is the exhaust setup

But whatever let’s just agree to disagree

[cinder spindle]

Do you have any idea what psi is measuring?

It sure as fuck doesn't seem like it. I thought I drilled it into this server enough it'd be known

[onyx slate]

I assume on the graph it is measuring the combined psi of the two as compared to the one measurement psi of the single

[cinder spindle]

First off that's hp and torque

Second, do you know what the boost gauge actually measures?

[onyx slate]

Pounds per square inch. Legit a measurement what u mean by this question

[cinder spindle]

So that's a no?

An engine is just an air pump. That little gauge measures the resistance of the air flow going through the pump.

You can have the same exact setup, same manifolds and all, change turbos, and see an extra 2-5psi without even touching the tune. Efficiency is real

There is no psi to psi comparison, with any turbos

[onyx slate]

Well u have your mass air flow which is used on NA and boosted (dude I ain’t stupid, I know how a compressor works). Then you have your boost pressure sensor on boosted engines for the account of the added pressure

[cinder spindle]

Alright it's over your head

[onyx slate]

How

[onyx slate]

Tracking the psi on the intake manifold with a sensor for a match in psi

Also a blowoff valve

[rough lotus]

I’m legit keeping it as a nice center piece on my shelf rn. 150 for a working turbo isn’t something imma cry about. Plus posted it on Craigslist and fb market currently got a few offers for 300 bucks.

[cinder spindle]

Take one of those offers, they're not worth that much

[rough lotus]

I can see cause brand new is 500-600

Also a pro charger would be better if I were to throw long travel sus on my truck.

[brave solar]

dude this just shows u know nothing aboeut engines or forced induction... turbochargers dont take longer to spool with a twin setup, ur thinking of a compound setup. And also turbo is way less reliable on the 5.3 setup. And people do indeed run stock block to the 600's of whp\

[brave solar]

if you're talking about a compound turbski setup ur right... but a standard 70 +70 twin setup is fine

@cinder spindle @onyx slate ur both right and wrong, on a single bank engine, with a single exhaust manifold going to a turbo, yes a single is more efficient. On a twin bank engine, you should have 1 turbo per bank OR a twin scroll turbo

[onyx slate]

Dat what I was saying, ish

[cinder spindle]

I'd love to see you try to touch 600whp without gapping rings. Tells me you haven't built shit. And are you really going to sit there and type absolutely mouth diarrhea like "hrr drr, you ackually meen compounds, compounds take longer to spool than a single apparently." There's proof above for your ignorant ass to check out.

[brave solar]

... if u have to throw a ringset in a 5.3 to hit 600 wheel, u havent built SHIT dude... and I said with a pro or supercharger... they hate turbos, most ohv engines do. Blowby aint bad til around 650/7 with a supercharger on stock block 5.3. Now the LT engines, those will take anything. I like LT more because you just throw port on em and their golden. And oh please, use your brain if you have one. Compound takes WAY longer to spool than a single, its the same principle as having a shorter charger pipe going from the compressor to the intercooler and then from the intercooler to the intake plenum... shorter is way better in this case.

[cinder spindle]

"they hate turbos" he says. Go cure your ignorance. Fucking dumbass is really talking about "blow by isn't that bad until around 650/700" when he doesn't even know what the fuck the ring gap is for

[cinder spindle]

@barren sigil you should pin this

[barren sigil]

Forum pins no

[cinder spindle]

But it's such a perfect ignorant comment

[onyx slate]

No u need to change the clearance, the engine will have a different expansion due to added heat and is also under more pressure from boost. But I agree with you on the turbo aspects

[onyx slate]

If you wanna prove me wrong find more charts and an actual article than the first image off ur google search

[cinder spindle]

That image is as close to perfect you can get. Two combos that carry roughly the same top end, you can see where each started to build boost and make power.

But as far as hunting for articles, I'm already annoyed so you can do your own research now that you have a bone

[onyx slate]

I don’t care if you are so certain on your opinion that twin is greater than single there should be a majority of articles in ur direction

[onyx slate]

What’s the the picture

[cinder spindle]

And now you're backwards

[onyx slate]

Nope (oops ya right, ya other way around)

[cinder spindle]

Just one of the hundreds of projects I've put together, mostly LS

[onyx slate]

Single I assume, was it a fox body? I can’t remember

[cinder spindle]

Yes

[onyx slate]

What was the number you were running again, can’t remember

600whp was it

[cinder spindle]

That cars never been on a dyno but it's taken 1000cc and 1500cc injectors to 90%

[onyx slate]

And you were building a cage for it too right

[cinder spindle]

Probably around 1000-1100whp

[cinder spindle]

That car is waiting to be dropped off at a chassis shop for a 25.2 cert, then I'll chase 6s with it

[onyx slate]

Let me test my knowledge on this one. Ring gaps expanded to much right?

In the picture

[cinder spindle]

Yes, that was a maybe 500whp setup

With a 25 top and 23 bottom

Ring ends touched and removed the tops of every single piston

[onyx slate]

I think by hate turbos he was talking about low boost setups. More easy to control boost with a supercharger than a turbo on stock block aspects

Would never run the number he is saying you can run though.

[cinder spindle]

Boost isn't much of a problem, torque spikes from superchargers kill stuff easier

Torque spikes kill the majority of engine like this

[onyx slate]

U can get boost to match with revs more equally though on a supercharger and have it build up more linear than that of a turbo

[cinder spindle]

1: it doesn't matter with an auto, turbo I'll always be better
2: when you're rowing through gears with a blower setup you get a torque spike every single time you get back into load

[onyx slate]

Ya but the a charger will match the engines power band

[cinder spindle]

So?

[onyx slate]

That’s the whole point of why it is safer to run one

[cinder spindle]

Does your leaf blower need to match your shoes?

[onyx slate]

This again

[cinder spindle]

Why would you want to lose boost when you drop 1,000 rpm?

[onyx slate]

Ur missing the point, this is NA engines we are talking about with a +s

[cinder spindle]

Wtf

They matter the same. Not at all

[onyx slate]

Dude it is safer to run a charger on a NA engine than a turbo

[cinder spindle]

I want all 40psi at 3500, as well as 7000

[onyx slate]

No what? Bro it does matter.

High cpr and lower cpr engines are different. With higher the cpr it is better to run a linear setup

[cinder spindle]

Again, I'll refer you to the sloppy wiki. Good luck

[onyx slate]

That is why most +boost kits for NA engines are supercharged and have more boost than their turbo counterparts. The boost is linear so you can have a higher boost output.

[cinder spindle]

For the love of God spend an hour today and try to understand what boost is a measurement of

[onyx slate]

Dude it is safer having high boost at high rpm than it kicking in at a medium rpm. I will stand on that. It way easier to control that on a supercharger

As it is linear

To the engines power band

It’s not a “so?”

[onyx slate]

Legit every single article says the same my guy lol

[cinder spindle]

🤣

Just believe it then I guess. If you ever work your way up to something fast you'll probably learn eventually

[onyx slate]

Shitty argument, so I guess when I get my engine back I will somehow get ur mindset? No doesn’t work like that

[cinder spindle]

Nah, you probably won't learn it with your engine/project

[onyx slate]

Then why bring it up

[cinder spindle]

That the last thing you plan on having someone build you?

[onyx slate]

Hey dude I don’t have a machine shop tools. I ain’t using a dremel to port either

Lol

I did as much as I could. But machining and assembly I ain’t doing. Parts grabbing and planning is all I can do there.

Anyways tell me then how having a linear boost is stupid or something

[cinder spindle]

"planning" then asks builder about everything

[onyx slate]

Nope

[cinder spindle]

You've annoyed the fuck out of me just be ignorant

[onyx slate]

Ur ignorant, ur just pasting on ur car and acting like u know everything. If you know everything tell me how I am wrong.

That simple

[cinder spindle]

I've tried, it's literally over your head

[onyx slate]

So you can’t explain shit cause u don’t know what ur talking about

Got it

All I am saying is superchargers, especially centrifugal ones are better to run on an NA engine because they have more of a linear boost

[cinder spindle]

Most don't have an issue, but most aren't chronically online people who have some actual knowledge in the stuff. I usually avoid giving out info online because people are like you. I'm not interested in arguing with someone who's set on being wrong because they've done some half assed research

[onyx slate]

How is that wrong…go

[cinder spindle]

So again, have fun

[onyx slate]

Dude I am asking a question

How am I wrong, ur refusing to answer it

[onyx slate]

When u wanna answer my question hit me up. Didn’t know it was that difficult. Just wanna know how I am wrong in that statement

[cinder spindle]

Tell you what, if you can actually find out what boost is a measurement of (because that's literally the bottom of the pyramid) I'll drop a bunch of info on you

[barren sigil]

Hint hint, resistance

[cinder spindle]

I tried that, I even typed out the best short explanation I could

[onyx slate]

The amount of air being forced into the engine, the positive pressure in the combustion chamber, Pounds per square inch, the additional pressure created from an outside force not off of the engines natural pump? What do you want?

It’s all the same, shoving more air into the combustion chamber than the engine can do naturally

Like have I not answered this before like multiple times

[cinder spindle]

Nope

[onyx slate]

😡

Bruh what is it, legit what am I missing

Honestly, I beg, u tell me now

[cinder spindle]

Start here

I literally told you in the simplest way I can think of

[onyx slate]

The resistance of the airflow

Idk

[cinder spindle]

It's that simple

[onyx slate]

Doesn’t this all fall under the same term though

[cinder spindle]

Now think about everything that could effect that. Mainly the charger, how it's driven, and the things that cause the most resistance

No, boost has as much to do with air evacuation as it does getting air into the combustion chamber

[onyx slate]

Hmm

[onyx slate]

Belt

You are taking away from the engine, but a centrifugal supercharger takes away very little

Confused

[cinder spindle]

When you have an idea of what the engine can flow then we can move on to turbos/blowers. Sudden increase of air velocity = torque spike. So say you have something that uses every bit of 100lb/m and makes around 800chp. The blower is going to peak at whatever your rpm limit is(hopefully around 100lb/m), but (in the case of a manual) when you let off and shift, and get back into the throttle that sudden air velocity spike makes a torque spike. That sudden torque load is what kills most of these engines, along with harmonics

When you get back into it with a blower it will make more torque for that half a second than it will at full tilt and at redline

Now when you get to an auto a turbo is better every way you look at it. No spikes, smooth curves, you don't lose enough rpm after a shift to put the engine in a dangerous rpm range (for cylinder pressure), it's entirely controllable, and it's more efficient

[onyx slate]

So would it be bad especially on downshifting then?

[cinder spindle]

As far as the twins vs single argument, the leading factor of spool time is air velocity as it hits the turbine. If you split the evacuating air into two systems you inherently lose both velocity and pressure. You're literally cutting the acting force in half

[cinder spindle]

Any time you come off the throttle and get back into it. It could be anywhere in the rpm range

[onyx slate]

I see now

[cinder spindle]

No lift shift with a blower is even worse unless you have the money to have legitimate protection (most of us only dream of that)

[cinder spindle]

Single exhaust is more efficient than duals for this same reason

[onyx slate]

Then what is the point of a supercharger then. Why even twin charged. Deleted my hvac system and ps because I wouldn’t mind fitting a twin screw in it for fun.

[cinder spindle]

Ease

Twin charging is more of a gimmick than anything. Might be cool for a street cruiser but when you want to start chasing power it's like shooting yourself in the foot

A supercharger kit is literally a bolt on. Turbo typical is not

[onyx slate]

Ya, so that is the only pro? Just ease

[cinder spindle]

By the time a turbo kit is legitimately bolt on it's more expensive than a blower setup

[cinder spindle]

If you're not chasing power they're just fine. In my opinion they introduce more problems than they're worth, especially on the smaller stuff most would consider. Small blowers make A LOT of heat and you typically don't have much of a core to flow the air through.

Plus you always run into the issue of your aux cooling system getting hot and your iat's being garbage until it cools off

The only time I'd say it's worth getting into a blower is if you have fuck you money and want to get into larger stuff that will flow 130lb/m+

Car/use dependant

[onyx slate]

Okay off topic question. I am always worried about cooling with my setup as my engine won’t have squirters. Some people say it will be fine, but I wanna make the most out of my cooling system. My engine bay is pretty free and I have a lot of room. I am gonna have a headlight intake on my left side for induction for my turbo I thought on my right I could have one too. Is it possible to have a second coolant cooling system, like a little radiator right there to help out also? I will have also an oil cooler in the front. Just wondering if it is a stupid idea or doable

[cinder spindle]

Just buy a good radiator that's up for the task. Spend the money once and you won't regret it

[onyx slate]

Ya I am gonna get a dece one, just wondering if I could hook up a second little one

Or if it is even doable or worth it

[cinder spindle]

I suggest large oil coolers, too. I universally use 5r140 transmission coolers

[onyx slate]

Aight

Also do aluminum forged pistons run hotter or cooler than cast. I can’t really find an definitive answer

[cinder spindle]

Probably not worth it, you'll me making more radiant heat and the engine bay alone will still get your other coolant tank to whatever the engine wants to run at (thermostat spring or literally what the engine wants without it)

[onyx slate]

Aight thanks

[onyx slate]

Cause wouldn’t it suck up more heat?

[cinder spindle]

I don't know that we would ever have a way to actually test this. Aluminum can get hotter but they still melt. We use aluminum because they're softer and handle detonation better than something like brittle cast. They'll be smaller than the cast when cold and larger than the cast when at temp

[onyx slate]

Aight

[cinder spindle]

Your block and heads have way, way more to do with engine temp than the pistons

[onyx slate]

Would smoothing out the combustion chamber help

[cinder spindle]

That's still up in the air

I say the smoother the better. No edges = more volume, but it depends on the head design

[onyx slate]

Still doing it though, as it slightly expands the chamber a bit

Ya my chamber oem is sharp

[cinder spindle]

You're getting into some gray area now

[onyx slate]

Wdym

I want to change this to this.

Not recommended or….

Seen people do it. Make it match with the bore well too. Removing that much would add volume too, no?

[cinder spindle]

It would and it could slow the velocity

But that's a trade off like everything else, being boosted it could not matter and you might see a little more power, or it could do nothing or even hurt power

Like I said, gray area. I don't know enough about those heads to have a definite answer on that

[tacit shale]

A CHEvy

[brave solar]

most of these 5.3's with a good tune can hit 600 on 15psi or less... I say 600 wheel because around then is when a lot of guys look for more boost. You also change ring gap (really just the whole ringset, upper and lower comp rings and oil control rings and expander) to deal with blowby and expansion, at the same time a lot of guys just bore and or stroke their motor out. I know a few guys that have bored the 6.2's but idk what pistons they are running to fit the increased bore, its shelf pistons but idk what company. How many pounds were you running in that picture? As long as ur not being a total dumbass and you have a large surface area intercooler ur intake temps will stay nice and cold ESPECIALLY on port injection where the fuel can cool the air entering the cylinder even more...

[brave solar]

90% duty cycle? LMAO dude thats fucking golden

[brave solar]

air speed, volume, and temperature are the main things you want to control. On an engine that was not previously boosted (naturally aspirated) going to a boosted setup, its always recommended to at least check valve springs and make sure they are stiff enough. Its not uncommon on 20+ pounds to see stock springs that cant close the valve as quickly with all that boost pressure in the manifold and in the head intake port

[cinder spindle]

Richard Holdener would like a word with you

[cinder spindle]

It lived around 90% with the 1000s (Id) and it's seen 90 with 1500 sep plenty

[sick crane]

@cinder spindle, why is a compound turbo slower to spool if it starts off spooling a smaller turbo?

[cinder spindle]

It's not, compounds aren't twins and ops is a moron

[sick crane]

Would you mind teaching me a bit about it? I'd like to build/turbo my next car, and I do have a general idea of what's needed and how it works, but you clearly know far more than I.

[brave solar]

hes not the guy to teach you, he hasnt seen a cummins compound and how slow they spool

[waxen aspen]

It's a 5.3 it doesn't give a shit below like 700whp

[brave solar]

thats exactly what i told this man

[waxen aspen]

People are grabbing junkyard 5.3s revving them out to 7200 with nitrous, limiter 3 minutes straight, or just turbo, intercooler, 80lb injectors and hope

[brave solar]

ya dude... if ur actually smart u can throw 15psi at these suckers, cam, procharger, heads, whatever and be at 550/650

just people do dumb shit and blow em up and then blame the motor

[waxen aspen]

6-7psi is the limit of stock fuel pump (400whp)

[brave solar]

fuel pumps aint hard tho usually

just slap it on 91 or eth lol

[waxen aspen]

Such a pain in the trucks

[brave solar]

do u just drop the tank

[waxen aspen]

But I have a sawzall

[waxen aspen]

Yes

[brave solar]

whats hard ab that?

i did a tank on a newer silvy and it was surprisingly easy for the in tank pump

hpfp on those di systems aint that fun

[waxen aspen]

When it fails with 28 gallons of gas in it ....ask me how I know

[brave solar]

oh shit lol

[waxen aspen]

Filled it up, drove it 30 miles or so, fuel pump shit the bed

[brave solar]

i have a siphon pump and that will remove a lot of it but it was like a grand

and a lift lol

[brave solar]

that sucks af

[waxen aspen]

I got a driveway and 1.5 working arms

[brave solar]

ya same when im at home

i have 2 jackstands and a floor jack at home

[waxen aspen]

Anyway, the biggest turbo you should put on that 5.3 for this application is a 70/76

[brave solar]

70mm is pretty large

[onyx slate]

If that was the case, what is the point of ring gaps

On stock rings I don’t see it lasting

[brave solar]

im telling u dude the 5.3 is fine stock

[onyx slate]

Did u not see this? It doesn’t matter about the engine either. It is a pretty universal concept. More heat expansion will cause the ring to expand further than designed and they can catch and fuck pistons

If the gap is changed then whatever. But if it is on stock rings. I doubt that is gonna run reliably. There is a reason why piston manufacturers have a list of like 10-20 different gap distances depending on what boost, fuel, and setup u are running

[waxen aspen]

That's why junkyard 300k mile unit. The ring gaps itself with miles

[cinder spindle]

That's fresh rings on 150k mile pistons. You both need to look up Richard holdener. These things don't really like to make even 500 with a stock cam. Try to cram all the air you want into them.

[tacit shale]

Facts

[waxen aspen]

I watch him, he doesn't know what a small injector is, n/a 5.3? 80lb boosted 5.3? 80lb like bro that's double the stock unit

[cinder spindle]

Incredible, the mod is as stupid as ops. Congratulations.

[mellow pecan]

bro probably doesn’t even have a tuner to tune the truck when it’s done 💀

remember guys, just throw a mega squirt on it

[cinder spindle]

That'll put him on par with mango

[brave solar]

mango can literally tune lmfao

he uses hp; yall are as dumb as u seem

[mellow pecan]

wasn’t talking about him

[cinder spindle]

I think anyone can use hpt

[waxen aspen]

Anyone can blow up an engine or type random shit in, but do you know what it all does? That's the difference

[cinder spindle]

Nah bro I've never seen a map. Teach me pls. Maybe when you're done you can go teach Holdener, too

[waxen aspen]

There's an entire niche about making an LS as fast as possible with the least amount of money .....he's nowhere near that spending a grand on an intake for 3 more hp then I can grab a similar one for $200 off another gm vehicle no one wants

[cinder spindle]

Yeah, that's about all id expect you to pick out if his videos

[waxen aspen]

His stuff works on the dyno, take that to the real world and watch it drive like ass, his throttlebody is too damn large on everything, but what would you know you just watch it on YouTube

[cinder spindle]

Surely you wouldn't grab any cam info or turbo info, still. You should do a little more research on the fella.

Bro exists to get people like you off of the surface level

[waxen aspen]

"Surface level" you mean this? There's so many different maps in an engine that do similar things, some do the same thing go out and do more then YouTube, actually try some of the things he does

[cinder spindle]

I have and it's worked well for me

[brave solar]

u seem to religiously follow holdener, gay for him?

[brave solar]

not to mention tuning for air density

muhaha

[cinder spindle]

Absolutely

[brave solar]

weirdf

[cinder spindle]

Gotta love the people who do this for work and releases concrete data to people free of charge.

[brave solar]

who do what