Fiberglass Spring
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Pro
Joined: Oct 2000
Posts: 509
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Fiberglass Spring
Decided to go with a composite spring for the old Shark. Looking at the 340 lb variety from Zip Products, but wondering if the 315 lb is what I really need. I'm concerned about ride height....I have heard that these 340 lb. springs "jack up" the rear a little. Any issues with this anyone??
Instructor
Joined: Jun 2002
Posts: 117
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From: epping nh
Re: Fiberglass Spring (72Shark)
I cant speak for spring rates However I have the TRW unit that is kinda mild. I love it and cant speak enough about it. You want as close to stock ride height as you can get or lower. Higher makes it seem sloppy on some cars.
Melting Slicks
Joined: Oct 1999
Posts: 2,581
Likes: 14
From: Tolar Texas
Re: Fiberglass Spring (72Shark)
I installed a 355 psi composite TRW design spring on my car to replace my worn 9-leaf. http://www.muskegonbrake.com The improvement was fantastic. My car is sitting a little high in the rear but I am ordering 10" bolts from Ecklers ($20) to correct this.
UPS has delivered my Composite Spring from Muskegon Brake
http://forums.corvetteforum.com/zerothread?id=302218
You can search the C3 archived topics and recent topics to find more information about rear spring experiences that others have shared. Simply use "spring" as the search criteria. http://forums.corvetteforum.com/zerosearch
UPS has delivered my Composite Spring from Muskegon Brake
http://forums.corvetteforum.com/zerothread?id=302218
You can search the C3 archived topics and recent topics to find more information about rear spring experiences that others have shared. Simply use "spring" as the search criteria. http://forums.corvetteforum.com/zerosearch
Melting Slicks
Joined: Jun 2002
Posts: 2,844
Likes: 99
From: Orrtanna Pa.
Re: Fiberglass Spring (72Shark)
I have Vette Brakes 360lb rear and 550 lb coils.Baught 8" spring bolts and can set the rear hieght pretty much where I want it. Harsh ride on rough roads,but boy can she bogie on the twisties! We are talking zero roll turns,and very little squat on hard launches.
When I feel like I've had enough kidney jolts,I drive the Olds for a day.
[Modified by The Money Pit, 4:48 PM 7/5/2002]
When I feel like I've had enough kidney jolts,I drive the Olds for a day.
[Modified by The Money Pit, 4:48 PM 7/5/2002]
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Instructor
Joined: Jun 2002
Posts: 117
Likes: 0
From: epping nh
Re: Fiberglass Spring (72Shark)
I would say I have the baseline TRW spring. Ride quality is incredible and many have said they didnt expect the smoothness. Now I dont autocross but I do drag frequently and the 4-6 inches it squats and loads up makes for nice launches on street tires.