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Old 01-06-2019, 04:52 PM   #1
Problems
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Project C7 SS

So Iím building a truck and decided opening a build thread would be a good way for me to be able to look back at how long this takes and how much work went into it. Basically the truck is C4 Corvette suspension steering rack and brakes with a C10 body and the short bed is being shortened 2Ē more to center the wheels. So I figure half a C10, half a C4, and a super short bed = C7 SS.

A little about the truck, picked this up off of craigslist about a year ago for $8900. It was someoneís started project that they gave up on. It came with a custom chassis, I was told it was built by Caged Motorsports in Wisconsin. Using a Flat Out Engineering crossmember for the suspension. Everything measures straight and looks to be quality work. I also got a perfectly clean Ď70 cab 2 truck loads of parts and enough body panels to make a 2nd truck.

I was in he middle of a frame off rodstoration on my wifeís Ď69 firebird convertible when I bought it so I mainly spent the last year selling off parts I donít want and stocking up on parts I need while it sat in the corner waiting itís turn. But the firebird is at the painter so I rolled it onto my rack and got started Over Christmas.

Right now with all the parts I sold and bought Iím into it for about $11k. Iíd like to be into it done for <$30k and have a LS swapped autocross truck pushing about 500rwhp on the road for 2020. So a ton of that budget will be in the motor. Luckily I have just about everything else sitting on the shelves now.

Reading this when Iím way over budget and it still isnít done in three years should make me laugh.
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Old 01-06-2019, 07:30 PM   #2
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Re: Project C7 SS

Your project is looks like it is going great.Nice job...
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Old 01-06-2019, 09:47 PM   #3
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Re: Project C7 SS

So first thing was ditching the step bed and getting a fleet. I bought a new one because Iíd rather deal with figment issues than rust. And Iím going to cut it up anyway. It actually went together really well, only had to Oogle two holes in the rear sill on the passenger side. Amazingly all the other holes were where they belonged... Yeah Taiwan your moving up in the world.
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Old 01-06-2019, 09:51 PM   #4
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Re: Project C7 SS

Next was dealing with the cowl mount hood hinges, I figured it would be easier with an empty engine bay. They went in super easy it was maybe a two hour project including a few trips to the fridge.
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Old 01-06-2019, 10:05 PM   #5
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Re: Project C7 SS

This weekends project was getting a motor and trans mocked up. I have a 6.0l LQ4 with a 4L80 out of a 90k mile short bus. Not sure Iím going to use the motor but it will work for mock up.

The frame was set up for clamshell small block mounts so I got LS adapter plates and gave it a shot. Well the frame side mounts were crooked so I had to cut them off and weld on straight. Not a big deal just a little extra time. Finally got it all in and then on to fabricating a cross member.

Hereís where it got interesting the C4 diff is mounted really high and dead level. So to get the angles right even with a high hump there are clearance issues to the floor. So we looked at 3 options.

1) lowering the engine in the frame, this was ruled out as it only has 3/4 of an inch clearance on the steering rack and I want the oil pan above the scrub line.

2) my buddy said I could space the body up. I looked at him a bit cross eyed and said arenít body lifts for 4x4s?

3) Then I grabbed a cut wheel and went at the floor.

Iíll have to build a new tunnel next weekend but the trans cross member is built and everything is lined up parallel.
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Old 01-07-2019, 12:35 AM   #6
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Re: Project C7 SS

Homie don't play! This truck will definitely be a one of a kind track beast. I hope you meet your personal deadline. Heaven knows I didn't. Looks like you have a great space to work, plus the huge benefit of a lift. Heres to getting a bunch of work done before the wifes Pontiac gets out of paint jail Cool project name too!
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Old 01-11-2019, 08:44 PM   #7
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Re: Project C7 SS

Nice project- following along
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Old 01-12-2019, 01:29 AM   #8
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Re: Project C7 SS

I like it, nice build so far!
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Old 01-13-2019, 03:49 AM   #9
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Re: Project C7 SS

So tonight I made the room for the trans and drive shaft. You can see how high the trans needs to be in order to match the pinion angle. I thought it would take a few hours it took 8. Guess Iím not very fast at fabrication. I cut the back off my high hump, and sectioned a low hum I had laying around to make an extra long high hump. Then I cut the floor out behind the hump and raised that too.

When my wife wakes up in the morning I can finally measure for a drive shaft. Next is taking 2Ē out of the front of the bedsides I canít wait to see how long that takes me.
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Old 01-13-2019, 10:50 AM   #10
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Re: Project C7 SS

That will look good when itís all put together
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Old 01-13-2019, 06:21 PM   #11
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Re: Project C7 SS

Can you post more detailed pictures of how the reared was installed
Thanks in advance
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Old 01-13-2019, 07:37 PM   #12
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Re: Project C7 SS

Sure, here are the pics of how the rear suspension set up is mounted.
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Old 01-20-2019, 05:32 PM   #13
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Re: Project C7 SS

Well I didn’t have much time to work on the truck this weekend. But I did get 1 bedside shortened 2”to get my rear wheels centered in the opening. I moved my cab 1” back to get the front wheel wells centered and also allow the motor to move back as far as possible. Of course these trucks never had the wheels centered in the opening from the factory but since this isn’t a restoration I figured why not fix that.

I decided to z cut it to get the outside cut as close to the front as possible and still keep the front body line on the inside. First pic is how I taped it, the duct tape is the 2” I removed, so I cut along both sides of the tape and at the bottom of the blue tape. Then just welded it back on tack welding and skipping around to keep heat down. The other pictures are of it welded in before grinding smooth.

Hopefully next weekend I can get the rest of it finished and back on the truck.
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Last edited by Problems; 01-20-2019 at 05:33 PM. Reason: Odd characters appeared
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Old 01-26-2019, 04:19 AM   #14
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Re: Project C7 SS

Well the bed shortening is done. Iím happy with how it all turned out, it looks way better, and Iím not sure anyoneís ever going to notice the beds 2Ē shorter than a stock shortbed.

Next is getting the whole body aligned on the frame and mounted then making the raised bed floor.
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Old 01-26-2019, 03:59 PM   #15
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Re: Project C7 SS

Tru ls looking good!!! When you moved the cab back, I'm taken you moved the mounts on the frame, correct?
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Old 01-26-2019, 05:17 PM   #16
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Re: Project C7 SS

Quote:
Originally Posted by Andyking1203 View Post
Tru ls looking good!!! When you moved the cab back, I'm taken you moved the mounts on the frame, correct?
It’s a custom chassis so they really weren’t “moved” but yes the cab and core support all mount to locations that would be about 1.25” inches back from a factory truck. That allowed me to move the motor pretty far back and still have plenty of firewall clearance.

Last edited by Problems; 01-26-2019 at 05:18 PM. Reason: Odd foreign characters again???
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Old 01-27-2019, 09:37 AM   #17
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Re: Project C7 SS

Quote:
Originally Posted by Problems View Post
Itís a custom chassis so they really werenít ďmovedĒ but yes the cab and core support all mount to locations that would be about 1.25Ē inches back from a factory truck. That allowed me to move the motor pretty far back and still have plenty of firewall clearance.
I knew it was a custom chassis.. I like what you got going on!!!
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Old 02-10-2019, 05:04 PM   #18
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Re: Project C7 SS

Well I ended up taking the whole body except the cab off the chassis. I then squared up the cab, and mounted it. Then I re-hung and gapped the doors and worked forward to the grill. Then I made bed mounts, so the whole body is actually bolted down and square with reasonable gaps.

Iím going to have to go back and weld some rig rod in the door gaps to get them perfect, but Iíll do that as I do finish body work. I guess next is either fabbkng up the seat mounts, or building the raised bed floor. We will see which sounds like more fun next weekend.
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Old 02-17-2019, 11:46 AM   #19
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Re: Project C7 SS

Looking really good. She sits just right
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Old 02-17-2019, 12:47 PM   #20
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Re: Project C7 SS

Great start!!
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Old 04-02-2019, 10:05 AM   #21
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Re: Project C7 SS

Well I havenít been posting but I have been working. Bed floor is framed out mostly, waiting for my new Boydís tank to finish it. Boydís is making a few changes to their EFI tank to make it work in my custom chassis, since my tank needs to sit on top of the frame rails the mount plates needed to be moved.

I have the headers and steering all figured out. Speed engineering headers give me plenty of frame clearance and steering clearance with the corvette rack.

Last I have all the sheet metal fitted and in epoxy primer for the engine compartment. I got it from Vannatta fab and I think it looks great.

My painter finished the firebird so my C10 is going back into the corner for a couple of months while I put the glass and interior back in that.
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Old 04-02-2019, 09:53 PM   #22
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Re: Project C7 SS

awesome work on both vehicles. I'll be watching this truck build closely. Keep up the great work!
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