Topic: Fiberglass Spring
in Forum: C3 Engines, Driveline and Handling
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I hear that replacing the steel leaf spring with a fiberglass spring drastically smooths the ride. Has anyone done this and what was the result? Also, they come with different # ratings. I assume the higher the # the stiffer the ride. Any recommendations on the #.
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Ellabell, GA - USA
Joined: 8/26/2003
Posts: 17
Vette(s): Red 1970 convertible an a 2002 Pewter convertible
Hi, I replaced mine with a 300# spring an it sure rides better. I have a 70 convertible. I think you would like it.
I was told by the owner of Corvette Center here in Syracuse that fiberglass leaf springs would make the ride better and smoother. He put them on his 2 vettes. Mine aren't bad so I'm not ready to replace them yet.
|UPDATED|11/9/2004 8:13:13 PM (AZT)|/UPDATED|
|UPDATED|11/9/2004 8:13:13 PM (AZT)|/UPDATED|
Lifetime MemberHot Springs, AR - USA
Joined: 4/24/2004
Posts: 3236
Vette(s): 69 Conv #'s match 427, TKO-600/.64, 3.36HD-Posi, HT, T/T, PS, PB, PW, SP, Leather, Comp XE264HR & Roller Rockers & Lifters, Air-Gap RPM intake, Holley St Av 770 VS, MSD 6AL+Dist+Blaster SS, K&N, Jet-Hot Hooker Side-Pipes, Steeroids, Al Rad, Spal Fans
| Relayer44 said: Any recommendations on the #. |
depends on the car...
year ?
BB or SB ?
Lifetime MemberGrand Blanc, MI - USA
Joined: 8/7/2002
Posts: 544
Vette(s): 1979, 350sb, as my kids affectionately call it "shit brown" Corvette purchased in 1996. 84,000+ miles. Not a show car, but I love her just the same.
I have the VBP 330# spring and love the ride. Just remember to replace the shocks at the same time so that you have the same dampening rate as the spring, other wise you will feel little benefit. I put KYB GR2 shocks on and couldn't be happier.
I have a TRW fiberglass rear spring (315#)and it works great. The only thing was that it caused the rear end to be too high, about 30" or so from top of the wheel opening to the ground. I had to change the spring mount bolts to 8" to be able to adjust it down to 28 1/2". Other than that, no problems.
By the way, forgot to mention that I also put on AC Delco Performer Gas Shocks when I changed the spring.
|UPDATED|11/10/2004 2:45:42 PM (AZT)|/UPDATED|
By the way, forgot to mention that I also put on AC Delco Performer Gas Shocks when I changed the spring.
|UPDATED|11/10/2004 2:45:42 PM (AZT)|/UPDATED|
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Lifetime MemberFrederick, MD - USA
Joined: 2/20/2003
Posts: 548
Vette(s): Frederick County Corvette Club (Maryland)
Tan 64 365 Hp Conv 4 sp
Red 72 4 sp Conv ..running a '68 327
Blue 76 Coupe L 48 4 sp
White 79 Coupe L 82 auto
Silver 98 Conv, 6 sp
35th Anniv '88 vette
AS Vettedreams said:
REPLACING THE SHOCKS along with the springs is extreeeeeemely important...
============ ========== =========== =========
I only replaced the spring with a 330 pound unit on my 72 and it rode like a buckboard...very stiff..and bouncy
A few months later I installed a set of KYB's (they are grey not white..have no idea of the number) and the ride
improved about 700000 percent...night and day improvement
Did the same thing with my 76 BUT I knew enough at that point to change both the spring and the shocks at the same time... BTW...it rides great also...
Bob G.
REPLACING THE SHOCKS along with the springs is extreeeeeemely important...
============ ========== =========== =========
I only replaced the spring with a 330 pound unit on my 72 and it rode like a buckboard...very stiff..and bouncy
A few months later I installed a set of KYB's (they are grey not white..have no idea of the number) and the ride
improved about 700000 percent...night and day improvement
Did the same thing with my 76 BUT I knew enough at that point to change both the spring and the shocks at the same time... BTW...it rides great also...
Bob G.
Bob
64,72 & 98 Corvette Ragtops
76 & 79 & qa 88 ANC Corvette Coupes 
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I put the VBP street and slalom kit on my '77 this summer. It included a 360# composite rear spring. My ride is so much better and the weight difference of the springs is pretty impressive. I won't be going back to a steel spring anytime soon!!
1977 Corvette EX-L48
383 Stroker, Holley MPFI, MSD Ignition, BTO 700R4, VBP Street/Slalom, Hooker Sidepipes with JCL Spiral Baffles, Corbeau A4s w/ Shark Bar and Simpson 5-Points, 17" AR TTII's, Kumho MX's
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383 Stroker, Holley MPFI, MSD Ignition, BTO 700R4, VBP Street/Slalom, Hooker Sidepipes with JCL Spiral Baffles, Corbeau A4s w/ Shark Bar and Simpson 5-Points, 17" AR TTII's, Kumho MX's
(click to see a bigger version)
Lifetime MemberHot Springs, AR - USA
Joined: 4/24/2004
Posts: 3236
Vette(s): 69 Conv #'s match 427, TKO-600/.64, 3.36HD-Posi, HT, T/T, PS, PB, PW, SP, Leather, Comp XE264HR & Roller Rockers & Lifters, Air-Gap RPM intake, Holley St Av 770 VS, MSD 6AL+Dist+Blaster SS, K&N, Jet-Hot Hooker Side-Pipes, Steeroids, Al Rad, Spal Fans
I just spec'd my new suspension with tony at vbandp today and he recommended the gr2's with the 360 lbs rear spring for my BB
and they are only 35$ each..
sounds great to me
and they are only 35$ each..
sounds great to me
in Forum: C3 Engines, Driveline and Handling
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