Wheel well height?
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
There is no spec for the height of the wheelwells. All the height specs are to the frame. The body, then, just mounts to the frame.
I do not have the '74 specs, but they can't be much different than for '71. The most relevant dimensions for what you are doing are the "J" and "K" measurements, from ground [level] to the underside of the frame at the front and back jackpoints, respectively.
"J" = 7-3/4" (+/- 3/8") with A/C ; 8-1/4" (+/-) without A/C
"K" = 7-3/4" (+/- 3/8") with A/C ; 8- " (+/-) without A/C
Your running height will appear to be too large if you put series 60 (or thinner) radial tires on the car. The '74 cars came with R70 series tires.
I do not have the '74 specs, but they can't be much different than for '71. The most relevant dimensions for what you are doing are the "J" and "K" measurements, from ground [level] to the underside of the frame at the front and back jackpoints, respectively.
"J" = 7-3/4" (+/- 3/8") with A/C ; 8-1/4" (+/-) without A/C
"K" = 7-3/4" (+/- 3/8") with A/C ; 8- " (+/-) without A/C
Your running height will appear to be too large if you put series 60 (or thinner) radial tires on the car. The '74 cars came with R70 series tires.
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
What are you wanting to do? The assembly instruction manual (AIM) has a diagram showing the frame measuring locations and a chart listing what the dimensions should be for cars with various options combinations.
Thread Starter
Racer
Joined: Sep 2007
Posts: 370
Likes: 5
From: Bradley Il.
2017 C3 of the Year Finalist
I want to lower the front about 1 in. from where it sits now. I have original springs(witch have probablyweakend over the years).
So, I don't know if I need to lower 1 or 2 in. from stock height to get 1 in. lower than it sits now. Does that make sense?
So, I don't know if I need to lower 1 or 2 in. from stock height to get 1 in. lower than it sits now. Does that make sense?
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
Team Owner
Joined: Sep 2006
Posts: 31,283
Likes: 4,373
From: Westminster Maryland
Hi jb,
The AIM does contain a sheet titled "TRIM HEIGHTS". UPC 6, Sheet A-12, in my 71 AIM.
The dimension for the distance from the ground, through the centerline of the front wheel, to the wheel arch is 27.91", average.
The size of the tire on the car affects this dimension. In 71 cars had F70-15 tires. The amount of air in the tire affects this dimension too.
I hope this gives you a start.
Regards,
Alan
The AIM does contain a sheet titled "TRIM HEIGHTS". UPC 6, Sheet A-12, in my 71 AIM.
The dimension for the distance from the ground, through the centerline of the front wheel, to the wheel arch is 27.91", average.
The size of the tire on the car affects this dimension. In 71 cars had F70-15 tires. The amount of air in the tire affects this dimension too.
I hope this gives you a start.
Regards,
Alan
Last edited by Alan 71; Sep 21, 2010 at 06:50 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
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
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
Here are the factory trim heights for '74. Note that non-OEM spec tires will affect J and K (trim), or any other measurement referenced to the body.
Last edited by TheSkunkWorks; Sep 21, 2010 at 07:59 PM.
