.
Rubber vs Poly Body Mounts
Thread Starter
Racer
Joined: Nov 2006
Posts: 435
Likes: 7
From: Wake Forest NC
Rubber vs Poly Body Mounts
I ordered poly bushings for suspension components; but had reservations about poly body mount bushings. Wouldn't the firm poly body bushings be kind of harsh on the fiberglass as far as stress cracks, etc, etc?
Race Director
Joined: Sep 1999
Posts: 11,361
Likes: 383
From: Plano TX
I don't see the point of poly body mounts. The body is not structural. It just sits on top of the frame. All poly will do is couple the body tighter to the frame and give you noise, vibrations and stress cracks.
Yes, the early C3 came with aluminum mounts. GM finally got smart in '73 and switched to rubber. I switched my 71 over to rubber and like it much better.
Yes, the early C3 came with aluminum mounts. GM finally got smart in '73 and switched to rubber. I switched my 71 over to rubber and like it much better.
Le Mans Master
Joined: Jun 2002
Posts: 8,339
Likes: 24
From: I can walk to MA
I switched my 75 rubber mounts to poly. Why ?
The rubber mount design tends to trap water and oil,
where the water rots out the sleeve/bolt and the oil
soaks into the rubber - destroying it over time.
My rubber mounts were all of this.
Poly will last longer here and offers some isolation from the frame.
The rubber mount design tends to trap water and oil,
where the water rots out the sleeve/bolt and the oil
soaks into the rubber - destroying it over time.
My rubber mounts were all of this.
Poly will last longer here and offers some isolation from the frame.
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
