#1972 Chevy C10 twin turbo

275 messages · Page 1 of 1 (latest)

rough hornet
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Traded my LS turbo Foxbody for this poorly setup 1972 c10 with a Gen V 5.3 LT motor and twin 70 turbos.

Follow along as I tear the whole thing apart and redo it correctly

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Rearend was a series 4 yukon with 3.73’s. The PO setup the rear end himself with 0 knowledge and basically threw the entire shim pack at this thing and used non match gears.
I took it apart, ordered a 3 series yukon limited slip and 3.42 gears. Installed the setup in my living room. First time doing a rear end build and I think it turned out pretty well.

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Ordered a DOD delete and stage 2 turbo cam kit from BTR. Upgraded the trunions to clips, dual .660 springs. Ordered a holley low profile pan and tapped 2x 10an turbo drains and 2x 4an turbo feeds.
The PO was pulling both turbo feeds post oil pressure sensing screen on a T fitting, and T’d the drains together in a U shape, so they werent draining properly. He also welded a drain fitting to the very bottom of the stock pan for the turbo drains, so they definitely weren’t draining properly. The passenger side turbo may need to be rebuilt due to the lack of draining it had. Bunch of very dark oil on the exhaust side of it.

shell cloud
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Also where are you from?

rough hornet
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Theres not much more to post right now. I might put the rearend back in the truck tomorrow. Then i gotta pull the motor but I got a 6.2 LS taking up space in my garage and motor stand right now that i wanna sell before pulling my truck motor

rough hornet
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debating on selling my twin 70mm percision turbos for twin 76mm vs racing ones

shell cloud
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I don’t know much about forced induction

rough hornet
rough hornet
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4 beer kind of night. Buttoning up the rear end so I can roll it out of the garage to pull the motor

rough hornet
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Rearend nearly put back together. Everythings ugga’d tight. Just need to research these rear disk brakes. They seem janky, need to see if its setup properly

shell cloud
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Kustomn

full pike
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What a bad ass build. Keep it up

rough hornet
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Found out last night that the side panels of my bed are fiberglass

clear rampartBOT
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GG @rough hornet, you just advanced to level 4! Chat more to level up and earn top roles!

sly jasper
rough hornet
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Good. Less weight

sly jasper
molten rose
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Absolute crazy, I love it

rough hornet
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Fuel cell came in, pump hanger came in. Waiting for black friday sales to hopefully pickup a walbro 525lph pump kit.
Rear wheels going back on this weekend, so I can roll it out of the garage to pull the motor

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Trying to figure out my audio system now.
Gunna get a 12” sub and 4x 6.5” speakers

boreal crown
rough hornet
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There will be, but its always nice to mix a little music in it

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Ordered the sub and 12” rockford amp with the enclosure

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Otherway around, amp and 12” rockford sub

full pike
rough hornet
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Finally got my rear brakes back together. Lost a slider pin and had to order new, then found the old one right after.
PO couldnt figure out why he didnt have any brakes, I opened the res and it was bone dry.
Filled it up, went to go bleed the brakes and have found 4 loose brake fittings from him so far..

rough hornet
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6.2 off the stand, about to pull the hood off the c10 and then pull the motor

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Chances of me taking this hood off by myself… very slim

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Light work

rough hornet
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Motors out.
Might start tearing it down today if I have time. Need to research on how to gap rings, ive never done it before

rough hornet
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12” sub came in. Amp gets delivered tomorrow. Just buying interior pieces if theyre on sale. Main focus is still the exterior/engine

rough hornet
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Took advantage of the 10% sale and ordered the head unit.. thing costs more than my whole sound system.

rough hornet
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Seats out.
Seat lowering kit ordered.
Need to figure out what i want to do about that shifter.
Need to paint the holley intake

But first im gunna jump back to working on the motor

rough hornet
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525lph fuel cell pump ordered,
Seat lowering bracket kit ordered
Arp headstuds ordered
3 point seatbelts ordered

It was an expensive day to say the least

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Oh, regulator as well

rough hornet
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Ring gapping time

sullen bramble
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Workin in sandals lol

rough hornet
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Assembly has begun. Painted the block after gapping the rings. Got the new cam in, holley knock off pan cleaned up and assembled. Garage is a disaster

rough hornet
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Broke my cam gear trying to put it back together. Ordered a new one. Gunna put my fuel cell and audio equipment together tonight instead

rough hornet
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Gunna start working in my interior while i wait for my new cam gear to come in.

rough hornet
rough hornet
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Got some stuff done today. Was fucking around with my garage heater forever so didn’t get everything I wanted done.
New cam sprocket came in, threw the limiter into that and torqued that on. Got my LS7 lifters in and started my ARP head studs but need to get a cleaning tool for the threads. So that’s on hold.
Started laying down the sound/thermal dampening pads in the cab

clear rampartBOT
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GG @rough hornet, you just advanced to level 5! Chat more to level up and earn top roles!

rough hornet
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-finished sound dampening the cab
-Got my fuel sending gauge set in

  • painted my valve covers
  • started looking at the unlabelled fuse panel and gave up…
    -figured out the button on the steering wheel is an antilag button
rough hornet
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Didnt plan on doing this today, but took out existing pcv studs from the valve covers and drilled/tapped for 1/2”. Put 1/2”x10an connectors on for the catch can

  • painted my accessories. Still need to paint my holley high ram but gunna try to focus on wiring tomorrow
rough hornet
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Trying to figure out this disaster

rough hornet
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PO fucked up the truck wiring majorly. Not only has he cut the shit out of the termi wiring harness but hes feeding everything off of 16awg wire, including the fuel pump and fans that require 10awg. He also fucked up all the relays.
Gunna have to rewire the whole truck.
In other news, I got my head bolt cleaning tool and finished off one side

rough hornet
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Studs are done, heads are on and torqued, Rockers are on.
Just need to do oil pan and timing cover to wrap up the motor.
Might focus on organizing the wiring, taking out the holley harness and figuring out whats what with that

rough hornet
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Motors done. Need to paint intake still.
Started taking my wiring apart

dense bear
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This is a cool project can’t wait to see it done

ornate river
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geez

rough hornet
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thanks boys. Hoping to have it done before spring. Really doesn't need much after I drop the motor in and rewire it. Just need to fine tune it. The rear suspension sits to the drivers side by about 1'' so need to play with that a bit and also run my fuel system

rough hornet
ornate river
rough hornet
# ornate river o did you finish your interiors?

Not yet. Still pulling out the bullshit wiring thats in it. Then need to rewire it all in the proper gauges. Then i can put the interior together. I wanna drop my motor back in, but its -30c outside so waiting for a warmer day to push the truck halfway out of the garage so I can put the motor in

ornate river
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show us when you done wit it fr i experienced that befo in my mechanic shop it takes like almost a day

rough hornet
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gunna take me proably longer than a day. I'm putting a lot of effort into this build and have to rerun every wire, minus the stuff for the motor cause im using a terminator x max

rough hornet
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Decided to stop having this in the back of my mind and im gunna swap out the used connecting rod bolts with arp bolts

ornate river
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dangg

rough hornet
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I lied. Im going with new factory bolts. you have to resize the rods if you go with ARP. Im gunna work on the truck tomorrow and friday hopefully so ill post some updates

vast hearth
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Any photos of that fox? Lol

rough hornet
vast hearth
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Clean but that C10 has more style

clear rampartBOT
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GG @vast hearth, you just advanced to level 1! Chat more to level up and earn top roles!

hardy bluff
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Which LT motor is that

rough hornet
rough hornet
hardy bluff
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Looks like a stout block

rough hornet
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Replaced connecting rod bolts with new. Cleaned up the engine bay, wiped it down, touched up paint, etc in prep to drop the motor back in.
Didnt take a pic but put a 2” hole in my firewall above the trans tunnel and ran my holley harness through it with a grommet.
It’s starting to come together now which is a nice feeling.
I wanted to drop my motor in tonight but it just started snowing a few hours ago and we got about 4” of snow so cant push the truck outside for right now

ornate river
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damn boa yo ass cooking

rough hornet
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Waxed and cleaned the engine bay in prep of dropping the motor back in. Tore more of the wiring apart. Gunna order some wire and connector pins and redo the whole thing.

rough hornet
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Didnt take anymore pics, but got all that wiring figured out under the dash for the most part. Just need to reloom it. And then swap some 12ga wires for 10ga

rough hornet
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Just got back from vacation. Waiting for some connectors for my relay boxes and then ill begin the rewiring process

rough hornet
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Begun rewiring the fuse/relay box

clear rampartBOT
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GG @rough hornet, you just advanced to level 6! Chat more to level up and earn top roles!

rough hornet
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Rewired the engine bay, changed side markers and turn signals to 14ga, headlights to 12ga and rad fans to 10ga
Just need to loom it. Then ill finish up the interior wiring

full pike
full pike
rough hornet
full pike
rough hornet
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Did a really nice job rewiring and looming the engine bay, kinda sad at how well i hid the wires
Started rewiring the interior and also test fit my new headlights

rough hornet
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Truck bed rewiring complete. Ordered some p clamps and that plastic wire loom to properly protect the wiring.
Interior power feeds all fed back to where the fuse panel sits (in the glove box)

Looking for 2 suggestions -
The inside of the truck bed thats black, should I clean it up or leave it looking used to match the “patina” of the truck?
The holley hi ram, I’ve painted the blockc accessories and valve covers black. Should I also paint the high ram black too?

shell cloud
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Killing it man!

clear rampartBOT
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GG @shell cloud, you just advanced to level 17! Chat more to level up and earn top roles!

rough hornet
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My workspace today

rough hornet
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Cleaned up 95% of the interior wiring and got it routed back to the fuse panel.
Fuse panels about 99% finished minus the audio system wiring

Ran out of wire loom, so had to stop for the day

rough hornet
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Ordered new window trim, door handles, matching lock set

rough hornet
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Wirings nearly done, minus the radio setup.
Dash is back in

shell cloud
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I have the same ones and they all stripped out and the passenger window barely rolls up they are awful

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They look good they just where super low quality for me and they didn’t work out

rough hornet
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Im struggling to find a proper door seal for the truck, the amazon ones bulb is too big and the door has to be slammed

shell cloud
shell cloud
rough hornet
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Sun in canada?

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Im just gunna get smaller bulb seals

rough hornet
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Just need to run power feed wires for my fuses and start working on the audio setup

shell cloud
rough hornet
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Its always overcast here lol

shell cloud
rough hornet
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Motors back in and trannys bolted back up

rough hornet
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Wirings 99% done, just need to loom a couple things in the engine bay, and then do radio wiring

shell cloud
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Looking damn good your doing a great job of making a nice truck and a fast truck

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Attention to detail

rough hornet
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Appreciate it. Its taking me a lot more time cause I’m really making sure I do everything to look right and perform right

shell cloud
rough hornet
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Im not a very good welder, but installed my lowering brackets for my bench seat. The custom trans tunnel is a bit too high, so had to weld some spacers in to get the height i needed

rough hornet
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Radios in, didnt get a chance to wire it.

rough hornet
shell cloud
rough hornet
shell cloud
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Daaaaaang much better than mine 😅

rough hornet
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3 point seatbelts are in, seats back in
Gunna start working on the motor tomorrow

rough hornet
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Turbos are on

silent falcon
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Holy shit

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Looks very good

hardy bluff
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@rough hornet might have to swap those graphite gaskets for some metal ones….i blew mine out the 1st or 2nd dyno pull

rough hornet
rough hornet
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Turbo supports are on and accessories are on

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Im gunna finish up the wiring tomorrow, as i seem to be having problems with the turn signals activating

rough hornet
rough hornet
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What do you guys like more, seat cover or no seat cover

shell cloud
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No seat cover from me (I have one because I haven’t found the seats I want for sale yet)

sly jasper
rough hornet
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Interiors 90%complete. Just need to cut a piece of metal to cover where the ac/heat controls normally go, and do door panel stuff, new felts, handles etc.

Engine bay is getting closer. Ordered a bunch of parts like turbo feed lines, 10an drain lines, vacuum lines. Put on the rad, intercooler, exhaust piping. Gunna put on my catch can and call it a night

silent falcon
rough hornet
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Put turbo gaurds on, built my turbo drains and hooked up my turbo feed lines.
Cranked the motor over and was seeing 45psi oil pressure while cranking

hardy bluff
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Might be joining the C10 gang soon lol

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Trying to buy a local guys 73 c10 it’s a roller rn but it would come with a 4l80e a 6.0 LS with a btr cam

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Interior is realllly nice

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The outside isn’t bad either few nicks and nacks here and there but you will get that with all vehicles especially older ones paints a nice color tho

rough hornet
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Got any pics?

shell cloud
hardy bluff
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doesnt have those wheels its on jegs ssr spikes

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and doesnt have the 350 sbc

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has a few paint flaws here n there most of them are easily fixable because its on the black grill, handles or other

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but im just waiting to hear back what he wants for it as a roller with all the stuff for the swap

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its also getting wilwood disc brakes front and rear so

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would be sick towing my car with this X)

rough hornet
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I like the paintjob

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Looks like a nice setup

hardy bluff
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yea its not bad I like the inside a lot. Its not perfect but it just depends what he wants for it

shell cloud
sly jasper
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I think he MIGHT like metallic blue.

rough hornet
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Got my catch can mounted and plumbed, injectors “tested” and fuel rails on. In the process of ordering a million different fittings to try and figure out a pleasing way to mount my regulator

hardy bluff
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I could get that c10 for 30k not turn key but putting it together won’t be hard

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I feel like that’s not a bad deal cammed 6.0 4l80 setup for AC just needs the condenser also has radio/bluetooth inside is nice

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Outside has some shit here and there really mostly on the door where he had scratch fucking with the key hole

rough hornet
hardy bluff
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Probably is there is carb 350 with 700r4 or 4l60 trans going for 30k most of the nice LS swaps I’ve seen were all like 35k+ the few I’ve seen around 30k are junkyard shitty motors among other things at least in my area anyway

shell cloud
rough hornet
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That didnt workout as planned

rough hornet
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Makeup my crossover fuel line, put the regulator
You can see where i mounted my catch can

rough hornet
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Old fuel lines are out, new fuel cell with 525lph pump is in, hooked up my driveshaft to my rearend, just need to set my pinion angle.
Still need to adjust suspension side to side as well.

Going to run new fuel lines tomorrow and hopefully start it early next week

placid finch
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this is dope as hell bro keep it up

rough hornet
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Started running the fuel lines from the tank to the post pump filter, then intake to filter
Got the intake on for the last time, ziptied wires and hid them the best i could thats final product for coil, injectors and plug wires.
Hoping to start the truck up this weekend

rough hornet
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Vacuum lines are done, fuel lines are done.
Just need to wire up the pump and put gas in it.

Hit the rad when drilling out some mounting holes for my IC.. so ordered a new one

rough hornet
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No dice.
Fuel pump wont shut off after prime. Truck wont catch, possibly from tuning error or from low battery voltage

rough hornet
rough hornet
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New

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Ew rad

rough hornet
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New intake positions.
Adjusted my timing a bit at idle, it was only at like 10degrees, now its around 18-20 and sounds much nicer

hardy bluff
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I gotta get filters for the street

rough hornet
hardy bluff
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nice work son

rough hornet
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New grille. Brake piston was leaking so ordered a new caliper

clear rampartBOT
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GG @rough hornet, you just advanced to level 8! Chat more to level up and earn top roles!

rough hornet
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Base tunes done. Sounds much better. New calipers on as well

rough hornet
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Seam sealed the original spots

silent falcon
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What kinda tires you running

rough hornet
rough hornet
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Been a minute, but ive been hard at work:
brakes have been figured out and are now fully functional,
Rear 4 link suspension tightened up and pinion angle set
Primed over PO’s name on the doors and will sand to match fake patina when dry
Truck now moves under its own power although the tune needs a little work still

Forgot how short the truck is, or how tall i am. Thats my eye height compared to the roof of the truck

shell cloud
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Dude it looks so good out side of the shop!

rough hornet
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Hoods on, cant get it to allign at all.
The urethane primer I put on under the hood and the doors did not cure and is super tacky.. probably put it on a little too thick. Just gunna leave it and hope it doesnt just melt when im driving

shell cloud
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Or is this the factory one

rough hornet
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My hinges are pretty sloppy though, might just buy new ones

shell cloud
rough hornet
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Ive fucked around with the fenders quite a bit and i got more allignment out of adjusting the hood and hinges. I ordered new hinges from summit

rough hornet
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Turns out PO thought his snowmobile shocks would hold up the rear end..
Ended up ordering some QA1 coilovers

rough hornet
rough hornet
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Took the truck on its first drive today.
Not a fan of the manual brakes or steering.

shell cloud
rough hornet
rough hornet
hardy bluff
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Oh yea manual brakes take some muscle lol it’s not like power brakes where you can stop it with your toe you gotta put some beans to it to slow down lol

rough hornet
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Yeah, mine are soft till the last little bit then they get hard

hardy bluff
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Yea same

shell cloud
rough hornet
rough hornet
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New steering wheel, changed tranny fluid and found some glitter but we’re gunna pretend it doesnt exist
Found a hammer in the drivers door panel
Starting running a better exhaust location

rough hornet
hardy bluff
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@sly jasper I ended up not just because I got so much shit on going on with mine I need to get mine dialed in first

rough hornet
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Exhaust is done. Makes it a bit more tolerable. Straight pipe from 3.5” to 3” out behind the cab

rough hornet
shell cloud
rough hornet
rough hornet
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Took the truck to a car show, left snd ended up having to baby it home cause the thermostat was stuck

shell cloud
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Oh snap

rough hornet
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Nvm doesnt seem to be stuck, just seems to be overheating all of a sudden without any real indicating factors on what could cause it

clear rampartBOT
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GG @rough hornet, you just advanced to level 9! Chat more to level up and earn top roles!

rough hornet
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Tried a 160 tstat and a 180. Both had temps climb up to 220 at highway speeds but came back down to 190ish when cruising the city

hardy bluff
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@rough hornet mine climbs to 200-205 on the highway and 190s in town

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@rough hornet how did you put water in it

rough hornet
hardy bluff
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@rough hornet id bet there is air bubbles youd be surprised..... i would get a coolant funnel and raise the front of the truck up and let it get warm and see if it chugs anymore water

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mine looked like it was full of water until i gota funnel and raised the front up and it chugged a whole extra gallon or so of water

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and those 200-205 degree temps was in like 95 degree weather no turbo blankets and no header wrap

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would also help to have a radiator shroud that could also be the problem 220 for an LS isnt like crazy but cooler is better

rough hornet
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Im not sure how much it plays a factor but my coolant to water ratio is way off now. A lot more water than coolant

hardy bluff
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I just run straight distilled water in mine

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especially if you plan on taking it to the track they wont allow you to run unless its a street legal

rough hornet
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Did the heat gun twice: 2nd set of numbers are respective of the first list:

Temp -187
Heads - 170
Rad - 130/ 110 w fan
Lower hose - 120
Upper - 135
Thermostat housing 170

190
184
110/115 - both fans on
123
153
184

hardy bluff
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Do the fans have a high low setting? Mine do but I run them on high 24/7

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@rough hornet a shroud will help a lot being that everything fluid wise checks out…. 190 cruising in town and 220 on the freeway tells me it’s because of the no shroud

rough hornet
hardy bluff
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yea just run distilled water works fine for me and tracks wont let you run if you have coolant

rough hornet
rough hornet
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Might have blown the tranny up last night after some highway pulls.
Started to feel some vibration afterwards, got home and parked it. Bottom of the bellhousing is dripping pretty good but i cant figure out from where

hardy bluff
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@rough hornet

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is it just me or does it look like the seem weld is cracked open all the way around on the converter

rough hornet
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oh holy shit, i didnt even see that

hardy bluff
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this is how mine looks well my old one anyone lol

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it would explain the fluid loss and vibrations

rough hornet
hardy bluff
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damn its hard to trace down leaks in there beause it gets on the converter and fly wheel and flings shit all over lol

rough hornet
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yeah, idk... prettysurei ts the bellhousing to front pump seal

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but fuck it

rough hornet
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Just took it around for 20mins. Parked it, already a couple drips after just a few minutes

hardy bluff
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Mine has all kinds of leaks

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i got leaks out the front cover main seal i got leaky valve cover seals...a leaky fitting on my transmission a leaky rear main seal on my trans and my rear end leaks too X)

rough hornet
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Trannys still leaking,
turbo oil drains leaking

Things falling apart but I absolutely spanked some Vinfast suv off the light with spinning through all the gears

hardy bluff
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I just pretend the leaks arnt there

rough hornet
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Its hard to pretend when the smoke is billowing from my hood cause the oils just spraying right onto my header

rough hornet
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Fixed the oil leak, trannys still leaking.
I hit 18psi last night. I gotta put smaller springs in it

rough hornet
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Fuel regulator diaphram fucked up and pinned the fuel lines to over 100psi.
Filled the intake with fuel from the vacuum line on the regulator.

I changed the oil and fixed the regulator but now i think the pump is fucked from when it saw over 100psi cause it makes a pretty bad screeching noise when it first primes

rough hornet
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Yeah thankfully it happened while it was parked cause it shot fuel out of the regulator adjustment screw