C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Coilover Spring Rates

Thread Tools
 
Search this Thread
 
Old Feb 19, 2023 | 07:39 PM
  #21  
Sky65's Avatar
Sky65
Thread Starter
Le Mans Master
Supporting Lifetime
20 Year Member
Veteran: Air Force
Liked
Community Favorite
 
Joined: Nov 2003
Posts: 5,772
Likes: 694
From: Maryland
St. Jude Donor '05, '09, '15
Default

Thanks all for the input! Very interesting on what others are using.
Special thanks to Leigh for spending time on the phone with me. We had a great corvette talk and I got a suspension education as well.
My plan is to follow Leigh's advise. If I'm off on the spring rates, though I doubt it, I can always change the springs as others have mentioned.

Yes I already have a 1 1/8 C3 factory front sway bar and 9/16 rear bar, VBP adjustable strut rod bracket and heim joint strut rods. I am considering the VS Delrin cross-member mount bushings to raise the diff a little for better half shaft angles. Not sure on that yet.

Thanks again!

Tom
Reply
Old Feb 19, 2023 | 08:54 PM
  #22  
leigh1322's Avatar
leigh1322
Old Pro Solo Guy
Supporting Member
Community Builder
Loved
Community Favorite
Top Answer: 5
 
Joined: Dec 2017
Posts: 8,079
Likes: 4,431
From: Marlton NJ
Default

Glad to help Jeff. I have the VS delrin crossmember bushings. They are supposed to lower the rear of the car, roughly 3/8", without any effect on the half shaft angles. You may want to check what angle you have in there now, when the stance looks right to you. IIRC the diff side of the h/s is supposed to be about 1/2" higher than the outside. Then they go pretty flat when you gas it, or at least not too far the other way. The rear can easily sag 1.25" on the gas.
Reply
Old Feb 21, 2023 | 07:24 PM
  #23  
Sky65's Avatar
Sky65
Thread Starter
Le Mans Master
Supporting Lifetime
20 Year Member
Veteran: Air Force
Liked
Community Favorite
 
Joined: Nov 2003
Posts: 5,772
Likes: 694
From: Maryland
St. Jude Donor '05, '09, '15
Default

Originally Posted by leigh1322
Glad to help Jeff. I have the VS delrin crossmember bushings. They are supposed to lower the rear of the car, roughly 3/8", without any effect on the half shaft angles. You may want to check what angle you have in there now, when the stance looks right to you. IIRC the diff side of the h/s is supposed to be about 1/2" higher than the outside. Then they go pretty flat when you gas it, or at least not too far the other way. The rear can easily sag 1.25" on the gas.
I think you have that mixed up. The bushings raise the diff approximately 3/8 inch which allows you to lower the car with the spring bolts the same amount to maintain your current half shaft angle.
Tom
Reply
Old Feb 21, 2023 | 10:00 PM
  #24  
leigh1322's Avatar
leigh1322
Old Pro Solo Guy
Supporting Member
Community Builder
Loved
Community Favorite
Top Answer: 5
 
Joined: Dec 2017
Posts: 8,079
Likes: 4,431
From: Marlton NJ
Default

Yep that's another way of saying it.
Reply
Old Feb 22, 2023 | 12:22 PM
  #25  
Sky65's Avatar
Sky65
Thread Starter
Le Mans Master
Supporting Lifetime
20 Year Member
Veteran: Air Force
Liked
Community Favorite
 
Joined: Nov 2003
Posts: 5,772
Likes: 694
From: Maryland
St. Jude Donor '05, '09, '15
Default Leigh

Just talked to Viking and ordered my coil overs. For my usage pentameters their calculations came to 450/350. Just like yours.


Tom
Reply
Old Feb 22, 2023 | 02:53 PM
  #26  
leigh1322's Avatar
leigh1322
Old Pro Solo Guy
Supporting Member
Community Builder
Loved
Community Favorite
Top Answer: 5
 
Joined: Dec 2017
Posts: 8,079
Likes: 4,431
From: Marlton NJ
Default

Perfect!

"I love it when a good plan comes together"
Reply




All times are GMT -4. The time now is 08:52 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE