1964 C20 Turbo LQ4 Build
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I have been lurking but never made a build thread. I figure I should start one since I keep changing stuff I may forget what all I have done. A brief intro to where I am now.
-Truck was a college grad present from family members. It came with a 292/4speed 5.14 gear treel pulling special. Its life was mostly spent hauling a camper (not a camper special I learned from you guys :p) -I got it, ripped the drive out and first put a 383/th350 combo in and rarely drove it since I couldn't tune it or something else -then the rear axle was swapped to a 14 bolt with new trailing arms since they rotten and broke. -New to me 1979 from spindles and disc brakes. -started air ride but never completed yet as I am changing my mind again. Plans: I have sold (gave away almost) the old driveline and am in the parts process of a LQ4 turbo 4l80 build. I am very uneducated in it all so I am learning as it go. So far the parts list is 317 heads with BTR kit, trunion upgrade, stage 2 turbo cam, s475 turbo, motor is from a 2002 2500. -power steering -complete 79 crossmember swap so I get better linkage. -fuel cell -hydroboost brakes -finish air ride enjoy |
Re: 1964 c20 lq4 build
I forgot to add Turbo in the title. could a mod edit this? thx
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Re: 1964 C20 Turbo LQ4 Build
A turbo'd 6.0 should make for a fun ride :thumbs:
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I'm in for this! i'm saving to do a ls turbo for my truck as well, just not sure if I want to go with a single turbo or twin! doing a lot of research for now before I buy any turbos, looked at some kits but would have to modify them to work so going to build tubing from scratch
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Perfect, THANK YOU!! :)
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The Turbo is a BW s475 with a 83mm turbine 1.1 ar ratio. it was about 700 which I thought was a dcent price for a well known mfg. I was going to originally go with a ebay special but I decided not to. With the smaller 1.1 ratio it is supposed to spool much better for the street and since I am not in it constantly I will not really have to worry about it restricting. here is my current build log: the recovered items could have been more but the wife wanted her spot back and the 2 stall is crowded already. so I had to give away and axle, tires, full truck utility service box, doors (rolling chassis) for about 200. -1700 Old motor trans "recover" 1800 base donor truck -2100 recovered 700 Cam/springs/kit 100 head gasket 700 Turbo 330 head clean/machine/valves 130 timing chaing/gears 300 all other gaskets 100 lifter 130 pump 100 trunion 590 |
Re: 1964 C20 Turbo LQ4 Build
yea I single turbo sounds better, I still want to drive mine as a daily at some point! not just a weekend warrior, would you mind posting parts numbers, I just might have to use your thread as a reference for when I get around to doing mine
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Bear with my on this. it might get messy. I spent far too many hours comparing rock auto, advanced, amazon, gm direct, jegs, etc etc for pricing.
This is the better running list I have on my home computer. 0 means I just have not gotten it yet. Injectors 0 lifters -100 http://www.briantooleyracing.com/del...x12499225.html push/guides/springs/ etc (BTR) http://www.briantooleyracing.com/bundle-cam-kit.html-680 head gaskethttp://www.jegs.com/i/Chevrolet-Perf...22033/10002/-1 -100 Turbo http://www.liljohnsmotorsports.com/b...rner-s475.html -700 Trunion upgrade https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 -140 oil pump https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1-150 gaskets, knock, misc advanced online w/ store pickup -300 fuel pump 0 BOV 0 Wastegate 0 Timing chain and gears (from a friend GM direct) -130 manifolds (trade) 0 intercooler 0 plumbing 0 head work/spring install (local shop) -340 crossmember misc 0 engine mounts 0 in bed tank 0 Engine stand (harbor freight) -48 driveshaft 0 Transmission shift kit Head bolts, crank, and tensioner -230 https://www.summitracing.com/parts/TFS-K30675600 https://www.summitracing.com/parts/ARP-134-3609 https://www.summitracing.com/parts/ARP-234-2503 |
Re: 1964 C20 Turbo LQ4 Build
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more
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slow weekend, house duties, making wife happy, and making sure im doing stuff right really slows the pace.
Trying to prep the block for starting install. lot more buildup than I initially thought. I am thinking just running it anyway. Tried blowing everything out the best I could. Read I need some $200 alignment tool for the main seals, cool. some guys get away with it. not sure if I will. |
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Engine Assembly day. Started finally using all the parts I have been staring at. Got the cam in, damper installed after the bolt fiasco, timing gears, oil pump shimmed (BLUE spring), and lifters in.
The retainer plate went to a C'SINK version which I guess I didn't look into enough which required special bolts only from GM. drove an hour round trip to dealer that had them for $4 each. bought $ but ended up using one. Stupid Me. Rest went on pretty smooth |
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Few things since last time. Got the heads on, waiting for correct stock push rods to get valves done. covers are located using alignit tool, pan and oil pickup tube are in and a few goodies.
I had to clean out the head bolts with a slit old head bolt. also used air nozzle with straw and a shop vac with a straw to make sure they were dry. I ordered the pickup clamp but mine didnt fit and a decent amount of grinding was needed on all parts involved. The alignit tool worked well but then I tightened oil pan bolts first and it jammed the pieces on. took a minute to get them off. we shall see if it is ok. Twin 38 WG and tial q 50 bov. lots of welding in my future. |
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looking good, thanks for the documenting
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Work has slowed a little because I am getting into the parts that I know little about (fuel and computer) and research is taking forever..... The motor is about ready to go back in the truck minus the flex plate. I got "wrong" one since its a 3 bolt. I may just order a TC to match. So now I am moving towards getting the trans done. HD-2 kits ordered and Circle D single disk soon.
Most focus has shifted towards suspension at this moment because before I can even put the drivetrain in I wanted to finish the 76 swap so I can do things correct. I originally pushed the BJ into the 64 arms so i could use the spindles but I don't like the idea. Picutres are random things like -spacers I picked up to run my DEKA 80 injectors (because they are 800 cheaper than other options). -12AN return for my turbo that I wanted to test fit into pan while it was out. -My pressure washer sandblaster works well. and some POR 15 action |
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part numbers for deka spacers (thanks sloppymechanics)
last one is for fun. new TIG. learned I forgot how to weld. starting over |
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updates
crossmember is in. had to drill top forward holes and then ream out the bottom forward holes. little tricky but its in. Backing plates are apparently normal for the 70+ xmembers. Also got my new bags in today. they are much smaller than the d2600 and look like they will fit the front with very little modifications. |
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Been slow moving, kids do that apparently. got the new crossmember fully in with air bags finally. had a hard time with getting correct A arm and making sure i was tightening the shaft nuts correctly essentially just turned until they bottomed out and I am supposed to torque to 200+ but i cant even get that. anywho.
I ended up using the newer mounts because they are stronger. I added some material on the back side instead of drilling bigger holes on the frame. Either way works at this point id say. the air bag plates were misaligned with the LCA I thought so i shifted over a hole and made the pipe fitting a larger opening. I also installed a Transgo hd2 kit in the 4l80. I am waiting for my single disk CIRCLE D TC to show up in the next few days. Here is a link to my process https://www.youtube.com/watch?v=FRrRnm0ZjkU |
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Its under its own weight and the motor is in for the first of many mock ups.
looks like there is a decent amount of room. this is with the motor slid all the way forward in the dingo mounts. |
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Nice work so far. What bag is that you used in the front? I don't think I have ever seen a single bellow style bag used on the front suspension.
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They are UNiversal air airhouse 2 bags |
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Slow progress and will be stagnant for a year or so. new job in different state really hurts progress.
I did get the IFS Xmember in and mocked. I may need to shim is since I think the Dingos lift the engine higher. |
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Cool build, I'm in.
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Well I pulled the harness out of storage since there isn't much else I can do in a rental. Following http://www.lt1swap.com/2000harness.htm slowly using the stock 411 computer, hopefully.
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Well finally all moved in and in the warm side of my new shed. 5 bays fills up fast :O I am hoping to do some plumbing this winter. Decided to ditch the cast manifolds as they would have had a weird upward jog i didnt want to deal with. for $120 these turbo headers look pretty darn good. I think I might wrap them as its not worth coating them since so cheap. looking to get 2.25" SS x-over and 3ish inlet aluminum. need to find a intercooler that will fit.
No idea why it rotates the pictures everytime |
Re: 1964 C20 Turbo LQ4 Build
Nice to see an update. How well do the stock plug wires fit with those new headers?
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I ended up ditching them headers and trying my hand at making a log manifold. The chrome ones were just too high and forward for my liking. have about 80 in sched 40 tube. I have confirmed i am not the best fabricator and rush things but they should work fine.
Initially started the build with elbows but compound angles kicked my ace and i went with straights. I 110v mig'd the joints against my better judgement. I will be TIG'ing the rest thats for sure. Also have some grinding to do on the through holes in the main tube. Advice to others would be get the damn hole saws. I didn't. Other updates were air bags on all four corners and drive angle set with 2 piece shaft. I think in about -3 on the engine and the 14 bolt is up 6deg with my first shaft 5-6 deg down. |
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pm'd
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well I finally can see some progress after being stagnant. I went back and forth many times on which route to go. I didnt like the header I made. I ended up using the Chinese ones that should flow better, just have to add a nice strong brace. got the hot side almost finished. ignore the poor welds. rushing and shaking dont make them pretty.
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I have always wondered about those headers. They look really nice. Just FYI you can find a 90 degree bend like the one you make for pretty cheap on a few different websites.
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They have them that "short"? I wanted a very tight radius so it didn't hang the turbo out further than already is. I really couldn't find anything. oh well now :) when it rusts out I will have to prob redo it anyway.
The headers seem decent. flange holes are way off on two of them but will work now. |
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Little update. trying to assemble everything. everything seems to be off by just enough to piss ya right off.... oh well figure it out later.
cold side started. turbo is so close to the wall i may have to make a sleeve in it or something hideous.. also you can kinda see the turbo bracket off the head i made. |
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What are you plans for the grill?
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holding it up there it appears I will have to shave the horizontal folded pieces that go to the rear of the truck on the oem bezel. I am hoping it is not much but the way things have gone.... haha not sure.
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the picture of the intercooler in the grill support panel just looks like it will be all in the way of the grill.
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we shall see :)
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I like that cross member, plenty of room for the exhaust...
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not sure i am going to make it back inside the rails with 4" so its was in vein lol
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