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11/13/16 4:18am - Original Message: 'Replacing My Rear Spring Cushions..'
alohajohn
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Vette(s):
1972 T Top, Mille Miglia Red, auto, ac, power windows, power steering, tilt/tele, power brakes, black leather..

Joined: 3/10/2013
Posts: 24
Guys I have a question,
Should I replace my rear spring cushions with Polyurethane or Rubber.?
The your comments on either would be appreciated.
 
 
John


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11/13/16 3:28pm - Reply: 'Re: Replacing My Rear Spring Cushions..'
73shark
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Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.

Joined: 7/9/2003
Posts: 396
My guess is the handling improvement would be marginal at best with a commensurate harshness in ride.

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1973 L-82 4 spd

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11/14/16 7:26am - Reply: 'Re: Replacing My Rear Spring Cushions..'
Redwoman Gold Member
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Bellingham, MA - USA

Vette(s):
1980 loaded red on red. 68,000 original miles. Second owner. Well documented with all original paperwork. NCRS Founders Award 9/27/14. NCRS Top Flight 10/12/14.

Joined: 6/23/2014
Posts: 171
Rubber is the way to go!!

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11/14/16 8:21am - Reply: 'Re: Replacing My Rear Spring Cushions..'
cinor Lifetime Member
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, - Canada

Vette(s):
1975 L48 Stingray 1992 LT1

Joined: 12/24/2013
Posts: 285
This is a never ending disscussion, I went back and forth on this and visited many forums,  there are pros and cons no matter which way you go,  I was sure I was gonna go rubber then ended up poly, and can't even remember why I decided to go poly, so good luck



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11/14/16 10:34am - Reply: 'Re: Replacing My Rear Spring Cushions..'
73shark
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Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.

Joined: 7/9/2003
Posts: 396
If you are looking for handling improvement, the low hanging fruit is replacing control arm bushings, roll bar end links and frame mounts, and strut rod bushings. For more neutral handling, put a 1.125" front roll bar on and a 7/16" rear bar on. ( small block)

Of course these mods will all increase ride harshness.

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1973 L-82 4 spd

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11/19/16 7:57pm - Reply: 'Re: Replacing My Rear Spring Cushions..'
alohajohn
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Vette(s):
1972 T Top, Mille Miglia Red, auto, ac, power windows, power steering, tilt/tele, power brakes, black leather..

Joined: 3/10/2013
Posts: 24
Guys,
Thanks for all your constructive comments, I wasn't specifically after any improvement in handling it was just that my rubber bushes are pretty much crushed and I was thinking of going for Poly as they don't seem to crush, also my car sits low because of lower profile [235/60] tires so I thought poly bushes might raise the rear a little..

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11/20/16 9:51pm - Reply: 'Re: Replacing My Rear Spring Cushions..'
73shark
Standard Member
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Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.

Joined: 7/9/2003
Posts: 396
Your rear spring should be flat to a slight positive arch when it's sitting on the pavement.  If it has a negative arch, then it's time to replace it.

|UPDATED|11/20/2016 7:51:32 PM (AZT)|/UPDATED|


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1973 L-82 4 spd

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 Forums -> C3 Handling Components
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