Rear Spring Replacement
Thread Starter
6th Gear
Joined: Jul 2024
Posts: 6
Likes: 2
Rear Spring Replacement
Been looking at replacing my rear spring on my 74 with a composite spring, looks like 330 # looks best based for my vette, anyone have advice on springs and shocks would be much appreciated
Last edited by Scooter1974; Dec 6, 2025 at 03:41 PM.
Burning Brakes
Joined: Jan 2001
Posts: 1,215
Likes: 441
From: Loir Valley Sarthe, France
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2024 C3 of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
I fitted a TRW 315lb spring to our '78 25 years ago. I fitted new Koni Adjustable shocks all round at the same time. The transformation in ride was amazing, exactly what we were looking for in the car that we were using increasingly for touring, in the UK and more importantly in Europe.
It still riders nicely, but if I was wanting to drive it harder I think a sway bar (ie the Gymkhana suspension package) would be beneficial. The shocks are probably getting near replacement time now, but we are still happy with the set-up.
It still riders nicely, but if I was wanting to drive it harder I think a sway bar (ie the Gymkhana suspension package) would be beneficial. The shocks are probably getting near replacement time now, but we are still happy with the set-up.
Race Director
Joined: Nov 2006
Posts: 13,227
Likes: 7,825
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
VB&P 330 mono spring, Bilstien B8's in the rear. 3/4 inch rear sway bar. Rides great handles fantastic.
stock gymkhana springs and sway bar up front, coils cut one coil. Bilstien B6's
stock gymkhana springs and sway bar up front, coils cut one coil. Bilstien B6's
Team Owner
Joined: Jul 2004
Posts: 40,404
Likes: 791
From: Redondo Beach, California
The stock spring is a little over 40 pounds. The composite spring is about 8 pounds. I have the VBP composite springs on my C3s. I like them. Not only to they weigh much less, they are easy to install and remove. Removing and installing the leaf spring makes me....nervous. If you replace your stock spring with composite, you car will develop a case of bouncy butt. The composite springs have no damping friction loss like the leaf springs, so they make the rear of the car a little bouncy if you don't install stiffer shock absorbers.
