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Old Jun 9, 2007 | 12:58 AM
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Default Custom C3 ideas....

Hi--
I've finally narrowed down what I want in a Corvette. Basically, I want a C3 with a modern suspension, brakes, and powertrain, and have been reading in some recent Corvette magazines that such a project is indeed possible. I'd like at least 350 hp to the wheels, a six-speed manual, a refreshed interior, and, of course, a great paint and body job. Nothing fancy, just something that's a blast to drive and will last a long time. In other words, something that runs like a late-model C5 but with a C3 body.

My question is, while 383s and LS engines seem to be the most popular choices, are those the only engine options available? For those of you who have built your own C3s in a fashion similar to what I've described, what did you choose? Are there other engine available that I haven't heard about? And, finally, if I buy a C3 for, say, $15k (I'm interested in a '73, '79 or '80-82), what could I expect to pay for the C5 modifcations? A similar amount, or more?

I'm sure I'm being too general for any one specific answer, but I'm trying to learn as much as I can before I actually get the car. Any input is appreciated! Thanks!
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Old Jun 9, 2007 | 06:57 AM
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Originally Posted by Treadstone71
Hi--
I've finally narrowed down what I want in a Corvette. Basically, I want a C3 with a modern suspension, brakes, and powertrain, .... at least 350hp to the wheels, a six-speed manual, a refreshed interior, and, of course, a great paint and body job. Nothing fancy, just something that's a blast to drive and will last a long time. In other words, something that runs like a late-model C5 but with a C3 body.

....? And, finally, if I buy a C3 for, say, $15k (I'm interested in a '73, '79 or '80-82), what could I expect to pay for the C5 modifcations? A similar amount, or more?
With all those modifications, I myself would not pay anywhere near $15k? Sounds like your plan would be to replace everything anyway. Between an engine, interior, and paint, you'll have no problem putting $15k into it.
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Old Jun 9, 2007 | 07:57 AM
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Take a look at this in our own c3 for sale section. It is a frame off restoration car. Taken apart completely, everything blasted free of rust, repainted. Every part changed that needed it, updated interior, motor, new tko500 trans. Perfect car for someone looking for a rock solid done car.

http://forums.corvetteforum.com/show....php?t=1711407
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Old Jun 9, 2007 | 08:05 AM
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Originally Posted by Treadstone71
if I buy a C3 for, say, $15k (I'm interested in a '73, '79 or '80-82), what could I expect to pay for the C5 modifcations? A similar amount, or more?
There are supplier's out there that make custom C3 frame set up to accept a C4 or C5 suspension components. They aren't cheap....at least $8000 +

Your better off finding a shell with no engine and bad frame for around $1000 and use that as a starting point since every component will be replaced anyways. You can still find a decent restorable driver for around $4000 -5000 (or do like me and get one for $2200!)

After doing that..I think spending at least $40,000 for a complete rolling resto -mod w/ a later model drivetrain would not be out of the question.

Or if you started with an exisitng restored C3......an additional $20,000 would not be unreasonable either.....all this is assuming you do the labor.
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Old Jun 9, 2007 | 08:08 AM
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Originally Posted by 1982CorvetteDude
There are supplier's out there that make custom C3 frame set up to accept a C4 or C5 suspension components. They aren't cheap....at least $8000 +

Your better off finding a shell with no engine and bad frame for around $1000 and use that as a starting point since every component will be replaced anyways. You can still find a decent restorable driver for around $4000 -5000 (or do like me and get one for $2200!)

After doing that..I think spending at least $40,000 for a complete rolling resto -mod w/ a later model drivetrain would not be out of the question.

Or if you started with an exisitng restored C3......an additional $20,000 would not be unreasonable either.....all this is assuming you do the labor.

it ain't cheap.
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Old Jun 9, 2007 | 10:47 AM
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Originally Posted by Treadstone71
Hi--
I've finally narrowed down what I want in a Corvette. Basically, I want a C3 with a modern suspension, brakes, and powertrain, and have been reading in some recent Corvette magazines that such a project is indeed possible. I'd like at least 350 hp to the wheels, a six-speed manual, a refreshed interior, and, of course, a great paint and body job. Nothing fancy, just something that's a blast to drive and will last a long time. In other words, something that runs like a late-model C5 but with a C3 body.

My question is, while 383s and LS engines seem to be the most popular choices, are those the only engine options available? For those of you who have built your own C3s in a fashion similar to what I've described, what did you choose? Are there other engine available that I haven't heard about? And, finally, if I buy a C3 for, say, $15k (I'm interested in a '73, '79 or '80-82), what could I expect to pay for the C5 modifcations? A similar amount, or more?

I'm sure I'm being too general for any one specific answer, but I'm trying to learn as much as I can before I actually get the car. Any input is appreciated! Thanks!
Wow! Sounds like we have the same tastes in vettes.I,m building that car now!I still need the six speed.The verdict is still out on the motor for now.(Might go TT's,Ls-1,???)I have built it to drive!I was driving it daily till I started the new look.Keep us posted on what you come up with.
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Old Jun 9, 2007 | 11:02 AM
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Originally Posted by 1982CorvetteDude
There are supplier's out there that make custom C3 frame set up to accept a C4 or C5 suspension components. They aren't cheap....at least $8000 +

Your better off finding a shell with no engine and bad frame for around $1000 and use that as a starting point since every component will be replaced anyways. You can still find a decent restorable driver for around $4000 -5000 (or do like me and get one for $2200!)

After doing that..I think spending at least $40,000 for a complete rolling resto -mod w/ a later model drivetrain would not be out of the question.

Or if you started with an exisitng restored C3......an additional $20,000 would not be unreasonable either.....all this is assuming you do the labor.
I agree,but If you don't mind spending sometime on it and have a mechanical drive in ya,you could cut the price way down on it.
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Old Jun 9, 2007 | 11:18 AM
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Custom C3 Ideas like glassed in Hood Scoops on stock hoods, sure would like to see some pictures
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Old Jun 9, 2007 | 12:42 PM
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82mdvette has a sweet resto-mod in the works...far beyond 15k my man, I'd extend your budget or try a new idea if you truly want something that drives like a c5...because this is what it presumably takes...http://forums.corvetteforum.com/show....php?t=1465589 when you get to page 35 or so, you'll see how sweet it really is. also do a search for project frankensport. his user name is corvette engineering. He is starting a venture where he sells resto-mod vettes with supercharged ls1 motors on tubular chassis with a full c5 suspension and running gear. but it'll run 50k and up i'd say. anyway good luck, hope I've been of some help.
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Old Jun 9, 2007 | 01:44 PM
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those arent the only engine options! you can EASILY get 350 HP out of a 350 small block, new CAM headers, free flowing exaust, aluminim heads and pistons, that will push even my 74 L48 up to 350 HP

Miles
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Old Jun 9, 2007 | 06:26 PM
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i guess you're looking to transform your C3 in a real sportcar...then you need to:

drop weight by at least 600lbs

put in a 383, leave the new gen engine to new gen cars

willwood calipers all round, braided hoses and hydroboost to uprate brakes.

single monospring rear and transverse monospring kit up front.

if you're staying around 350hp and you drive on street rubber i'd bet you won't need to uprate your driveline.

good luck
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Old Jun 9, 2007 | 07:00 PM
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OK-

When I bought the body and frame, the thought was to build an obnoxios street car that would run with a stock Z06 and scare women and children. After several months of back and forth on whether or not to move ahead, I've decided to build it.

Here's my plan for the widebody. (bought at Carlisle last year)
VBP trans leaf front/rear springs, upper/lower A arms, and brakes. (hope to buy at Carlisle THIS year)
Hydroboost.
Steeroids. Check
Guldstrand 5 link rear susp. Check
Van Steel carbon fiber driveshaft, halfshafts. Check
6 spd. (If I can save enough $$$ for Carlisle)
383 stroker w/cross ram webers or efi (I might wimp out on this due to expence). Have block/heads
MSD Ignition. Check
Stainless works shorty headers and sidepipes. Check
Kinda liking the new custom interior pkg offered from MAD
'82 seats (have frames)
Good sound system (not to win any contests, just be heard over the exhaust).
A/C.
Moonroofs. Check
Western Hurricane mags. Check (although I'd like to find 2 10" to replace 2 of my 8's)
Planning on 2455015's up front an 2955015's out back. (BFG or Hoosier's)
Guessing 30-35k before I'm done, hope to begin assembly in the fall.
Bought the body/title for 1k and a bare frame (epoxy painted) for another grand. Should be worth 12 or 13 when I'm done in 3 years...LOL (only partly kidding here). But I'm going to have fun pizzing off the purests and gold chain set cause this one is going to be a runner! /:\

Last edited by parkerracing; Jun 9, 2007 at 07:03 PM.
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Old Jun 11, 2007 | 02:04 PM
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Originally Posted by 1982CorvetteDude
There are supplier's out there that make custom C3 frame set up to accept a C4 or C5 suspension components. They aren't cheap....at least $8000 +

Your better off finding a shell with no engine and bad frame for around $1000 and use that as a starting point since every component will be replaced anyways. You can still find a decent restorable driver for around $4000 -5000 (or do like me and get one for $2200!)

After doing that..I think spending at least $40,000 for a complete rolling resto -mod w/ a later model drivetrain would not be out of the question.

Or if you started with an exisitng restored C3......an additional $20,000 would not be unreasonable either.....all this is assuming you do the labor.

...me too

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Old Jun 11, 2007 | 03:03 PM
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FWIW: If you've got $15K to spend on a C3 and another $15K for the modifications you want, take the $30 and buy a C5 Z06. It'll have everything you want.

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Old Jun 11, 2007 | 03:25 PM
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Originally Posted by Easy Mike
FWIW: If you've got $15K to spend on a C3 and another $15K for the modifications you want, take the $30 and buy a C5 Z06. It'll have everything you want.

That's what I should have done. I'm considering selling my C3 for a '01 Z06.
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Old Jun 11, 2007 | 03:41 PM
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If you really want a C3 here is a better place to start http://forums.corvetteforum.com/show....php?t=1686545

If you want more than that car offers the take sperkins' and Easy Mike's advice and get the newer car.

I have been wanting that car for over a year but I am too stupid to sell mine and buy it.

Last edited by kevinator80; Jun 11, 2007 at 03:43 PM.
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Old Jun 11, 2007 | 04:38 PM
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FWIW, for the money I have spent on my 72, I could have bought a very nice C5. But it's worth keeping it just to see the look on a C5 drivers face when we meet on the road.


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Old Jun 11, 2007 | 06:28 PM
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for what I have in mine I could have bought a decent low miles C5, granted it would have been more reliable and comfortable to drive...

But I bet I wouldn't have gotten a thumbs up and a honk from a semi -trucker sunday morning like I did in my 82
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Old Jun 11, 2007 | 09:53 PM
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A lot of good advise has been given here. FWIW I have over 40K in mine and only gave 4K for it. My criteria was a good solid body, birdcage, and frame to work with. Most of the rest will get thrown away anyway. You could save a lot of money by buying one that someone else has done if it has usable components that you would be satisfied with such as paint, engine, etc. As others pointed out there are some good starters in the for sale section that can be had for the price of a 383 and a paint job.

I agree that you could have a nice C5 for less and get a better return on your investment.

I have a triple black 04 vert also and love the car but it gets no where even close to the attention the 77 gets
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Old Jun 12, 2007 | 08:44 AM
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Originally Posted by mod81
82mdvette has a sweet resto-mod in the works...far beyond 15k my man, I'd extend your budget or try a new idea if you truly want something that drives like a c5...because this is what it presumably takes...http://forums.corvetteforum.com/show....php?t=1465589 when you get to page 35 or so, you'll see how sweet it really is. also do a search for project frankensport. his user name is corvette engineering. He is starting a venture where he sells resto-mod vettes with supercharged ls1 motors on tubular chassis with a full c5 suspension and running gear. but it'll run 50k and up i'd say. anyway good luck, hope I've been of some help.
Thanks Mod81, you are absolutely correct on the costs. $31,000 to date and I haven't added the last few months in receipts. Plus, I have done ALL of the work myself minus bodywork and paint which I got a hell of a deal from a friend.
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