c3 road race build
Thread Starter
Intermediate
Joined: May 2012
Posts: 29
Likes: 0
c3 road race build
Hello my car Is gonna be for nasa super unlimited
it's a 80 that I've made a roadster I have built every part of this car and still have a ways to go the motor is an late 80's le mans prototype chevy 4.5l 282ci. trans is a t56 thanks for looking this is it so far......
it's a 80 that I've made a roadster I have built every part of this car and still have a ways to go the motor is an late 80's le mans prototype chevy 4.5l 282ci. trans is a t56 thanks for looking this is it so far......
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Are you going for the 8.7 pounds per hp more like ST2? I was looking at your cage. C-3's are tiny inside. The door bars need to be out inside the outer door skin. So you make the doors hollow with no inner panel. Road racing seats are big. Our shop has a few road racing Vettes and my 79 is caged.
The NASA rules allow unlimited stiffening. So you can make a 10 - 12 -14 point cage. I've done some NASA ST1 events
My advice is coil overs and big brakes with air ducting.
The NASA rules allow unlimited stiffening. So you can make a 10 - 12 -14 point cage. I've done some NASA ST1 events
My advice is coil overs and big brakes with air ducting.
Last edited by gkull; May 17, 2012 at 08:11 AM.
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
I was trying to find info on your le mans prototype chevy 4.5l 282ci.
I couldn't find anything. NASA uses engine dyno's to level the playing field. If it was me............. I'd be running the biggest ci for TQ and make it low in HP to meet the weight class
I couldn't find anything. NASA uses engine dyno's to level the playing field. If it was me............. I'd be running the biggest ci for TQ and make it low in HP to meet the weight class
Thread Starter
Intermediate
Joined: May 2012
Posts: 29
Likes: 0
I'll be shooting for st1 my car weight is very low in full race trim it should be around 2000lbs the power of the engine is 550 @ 7500 the specs are 4.155 bore 6" rod 348 stroke v6 13.3 to1 gm heads with allot of work solid roller with 670 lift and a gm cross ram intake there are not allot of motors like this out there but there are allot of the Buick engines and this is a Chevy copy
http://www.race-cars.com/engsales/ot...99161666ss.htm
As far as brakes I have a wilwood set up there will be cooling ducts and I'll be running a quick change with a double a arm set up and a cantilever suspension
http://www.race-cars.com/engsales/ot...99161666ss.htm
As far as brakes I have a wilwood set up there will be cooling ducts and I'll be running a quick change with a double a arm set up and a cantilever suspension
Thread Starter
Intermediate
Joined: May 2012
Posts: 29
Likes: 0
I understand where your comming from with the 434 that would be a great motor but what I would gain in tq I would be adding in lbs I'm in the high 400s in tq but around 160lbs lighter witch will help in the handling plus this engine is what I have and a 434 is big$$$$$
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
I was trying to dig for info on him. He used to be on this forum and won the west coast championship in NASA st1 he bought a "BadAss" motor 434 ci 675 hp he had the lap record at infinion race way. anyway he gave up on his vette after a couple of years and went class racing in a Mustang
The motors are only like $13K and the aluminum Dart blocks are only $3000 more. His race weight more like wet 2850 with driver
The motors are only like $13K and the aluminum Dart blocks are only $3000 more. His race weight more like wet 2850 with driver
Agree with the nice weld comments 
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
Dang, that is some beautiful welding. 
Assume you'll tie the cage down to the frame just ahead of the kickups, and while you're already going to this much effort I'd definitely run it forward up to the front suspension.
Assume you'll tie the cage down to the frame just ahead of the kickups, and while you're already going to this much effort I'd definitely run it forward up to the front suspension.
