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

VBP mystery spring rate

Thread Tools
 
Search this Thread
 
Old Jun 29, 2023 | 02:25 PM
  #1  
lawcorvette's Avatar
lawcorvette
Thread Starter
Racer
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Sep 2002
Posts: 319
Likes: 3
From: LONG ISLAND NY
Default VBP mystery spring rate

I am thinking about buying a rear fiberglass NOS VBP spring.

I would like to know what spring rate it is.

It has a sticker with the box "PRM" checked off.

I assume that means performance.

However, there is no rating listed, and all the other ratings on the sticker are not checked off.

Does anyone know what spring rate this spring has?

Thank you,

Harry
Reply
Old Jun 29, 2023 | 04:04 PM
  #2  
sunflower 1972's Avatar
sunflower 1972
Melting Slicks
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Sep 2016
Posts: 2,230
Likes: 984
From: Wauconda IL
Default

Here's a photo of my VBP spring label and I don't see a "PRM". Can you post a photo of the label you have?


Reply
Old Jun 29, 2023 | 06:24 PM
  #3  
Kidster71's Avatar
Kidster71
Highway Man
Supporting Lifetime
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Apr 2019
Posts: 445
Likes: 188
From: Ca
Default

here is an old VBP catalogue..

https://www.corvetteforum.com/forums...post1606401942
Reply
Old Jun 30, 2023 | 07:27 AM
  #4  
4-vettes's Avatar
4-vettes
Race Director
15 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Nov 2006
Posts: 13,248
Likes: 7,839
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
Default

I purchased my VB&P spring in the mid 90's. The sticker on mine is just as post number 2. With a hole punched out under the spring rating.
also, as stated above. No mention of the rating you described. Mine is absolutely identical to post number 2.
Reply
Old Jun 30, 2023 | 12:27 PM
  #5  
lawcorvette's Avatar
lawcorvette
Thread Starter
Racer
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Sep 2002
Posts: 319
Likes: 3
From: LONG ISLAND NY
Default

It was DRM... it was a dual rear mount spring. I don't think the guy had the rest of the setup, as I asked.
Reply
Old Jun 30, 2023 | 01:20 PM
  #6  
Mark.uli's Avatar
Mark.uli
Instructor
Liked
Loved
Community Favorite
 
Joined: Mar 2023
Posts: 211
Likes: 148
From: NJ->WI
Default

On my spring the spring rate was stamped into the metal end cap near the bushing cup, bottom side. See if he can get photos of those areas.
Reply
Old Jun 30, 2023 | 05:09 PM
  #7  
augiedoggy's Avatar
augiedoggy
Le Mans Master
15 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2007
Posts: 5,028
Likes: 1,120
From: North tonawanda NY
Default

My thread from a couple months ago might help...
https://www.corvetteforum.com/forums...-buy-used.html
Reply
Old Jul 1, 2023 | 04:26 AM
  #8  
Bikespace's Avatar
Bikespace
Race Director
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Mar 2017
Posts: 11,953
Likes: 4,508
From: Virginia
Default

Originally Posted by augiedoggy
My thread from a couple months ago might help...
https://www.corvetteforum.com/forums...-buy-used.html
Beat me to it.

I'll add that @augiedoggy's thread has pictures. If you know what the spring looks like, posting a picture is much more helpful than describing it.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Jul 2, 2023 | 03:04 AM
  #9  
Gale Banks 80''s Avatar
Gale Banks 80'
Safety Car
15 Year Member
Photogenic
Photoriffic
Top Answer: 1
 
Joined: Nov 2008
Posts: 3,720
Likes: 555
From: Seattle Washington
Default

DRM is Duel Rear Mount. Its intended for there C4 style rear spring set up that had the Aluminum Bracket that held it. If it was DFM it would be for the matching Duel Front Mount Kit they sold. This is a spring that I would be interested in buying as I have the rest of the set up.
Reply

Get notified of new replies

To VBP mystery spring rate





All times are GMT -4. The time now is 09:10 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