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Question about 1981 Mono leaf..

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Old Jan 9, 2007 | 06:25 PM
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Default Question about 1981 Mono leaf..

I just found out today that my 1981 does not have a mono leaf rear spring. I know this was the first year for that change.

My car is also one of the last St. Louis plant cars. Any chance they started building them with the mono leafs in Bowling Green, or is that just wishful thinking?
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Old Jan 9, 2007 | 06:29 PM
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You mean you have a steel spring? Not a composite one? I believe that only 4 speed 81s got the fiberglass rear spring.Auto with the base suspension I dont believe got the steel version.I may be wrong on that.

Hope that helps.
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Old Jan 9, 2007 | 06:33 PM
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From: http://www.100megsfree4.com/corvette/1980/vet81.htm
  • Corvettes with Turbo HydraMatic had a new fiberglass-reinforced monoleaf rear spring that weighed just eight pounds (33 pounds less than the multi-leaf steel spring it replaced).
  • The new spring eliminated interleaf friction.
  • Manual-shift models kept the old spring, as did those with optional Gymkhana suspension.
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Old Jan 9, 2007 | 06:41 PM
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Originally Posted by 8T Shark
You mean you have a steel spring? Not a composite one?

Correct, I have a multi leaf steel rear spring and it's an Auto trans.
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Old Jan 9, 2007 | 09:20 PM
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Originally Posted by Xakk
From: http://www.100megsfree4.com/corvette/1980/vet81.htm
  • Corvettes with Turbo HydraMatic had a new fiberglass-reinforced monoleaf rear spring that weighed just eight pounds (33 pounds less than the multi-leaf steel spring it replaced).
  • The new spring eliminated interleaf friction.
  • Manual-shift models kept the old spring, as did those with optional Gymkhana suspension.
My 81 4 speed with the gymkhana option has the steel multi leaf
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Old Jan 10, 2007 | 01:15 AM
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OK I got it backwards.So base suspension Autos should have got the composite rear spring?
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Old Jan 10, 2007 | 01:37 AM
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Originally Posted by 8T Shark
OK I got it backwards.So base suspension Autos should have got the composite rear spring?
yes, auto = composite, 4-speed = steel = heavy.
ace, something is up with your car. it should have had composite regardless of bowling green/st. louis
BTW, there were never any 4-speed BG cars. not particularly important, just trivia.
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Old Jan 10, 2007 | 07:57 AM
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Originally Posted by Flying Ace
Correct, I have a multi leaf steel rear spring and it's an Auto trans.
Somebody probably replaced your original composite spring with a steel spring. How many leaves does it have? 7 or 9?
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Old Jan 10, 2007 | 08:19 AM
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Originally Posted by MN80Vette
Somebody probably replaced your original composite spring with a steel spring. How many leaves does it have? 7 or 9?
If the car was ordered with Gymkhana suspension, it'll have a steel spring, regardless of what transmission was in it. It's most likely an FE7 option car.
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Old Jan 10, 2007 | 11:27 AM
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Same here Flying Ace. I have an 81 auto and one of the last from St. Louis. It has the steel spring.

Last edited by Plane_guy; Jan 10, 2007 at 12:52 PM.
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Old Jan 10, 2007 | 11:46 AM
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I've done some work on an '81 automatic that has the steel rear spring.

Be well,

SJW
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Old Jan 10, 2007 | 08:44 PM
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If it was ordered with the Gymkhana suspension (FE7) then it would have a 7-leaf spring. If it has 9 leaves, then it probably wasn't an FE7 car unless someone swapped springs.
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