Diffrence between 90 & 91 other than body.
Thread Starter
Pro
Joined: Jul 2000
Posts: 590
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Diffrence between 90 & 91 other than body.
Dose anyone know of any diffrence between a 90 and 91 other than body?
Is there Performance or Suspention diffrence? :confused:
What rear axel did the ragtops get?
:flag
[Modified by Racer-X, 4:06 PM 12/3/2001]
Is there Performance or Suspention diffrence? :confused:
What rear axel did the ragtops get?
:flag
[Modified by Racer-X, 4:06 PM 12/3/2001]
Race Director
Joined: Mar 1999
Posts: 12,597
Likes: 237
From: Bartlett Illinois
Re: Diffrence between 90 & 91 other than body. (tntcorvette)
1991 was the first year for the DAB (Delayed Accessory Bus) thus the CCM for that year is Unique
not sure if any on if the exhaust is different.
not sure if any on if the exhaust is different.
Drifting
Joined: Jul 2001
Posts: 1,511
Likes: 1
From: Winter Park Fl
Re: Diffrence between 90 & 91 other than body. (Racer-X)
Both motors use the Speed/Density engine control. The comvertible mufflers only used one exhaust outlet per side. The gear set for the ragtop is 2.59:1 for the automatic
C44EVER.
C44EVER.
Pro
Joined: Jun 2001
Posts: 583
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From: Asheville NC
Re: Diffrence between 90 & 91 other than body. (91Yellow1)
The 84-90 mufflers were the oval type.......the 91 had a more round muffler like the 92 LT-1's..but it had two tips rather than the single tip LT-1 tip. The 91's also mounted different than the 84-90 mufflers. Thats why you see so many systems that fit a 84-90. These systems can be used though with slight modification to the exhaust hangers!
I am planning on getting the MAD Performance mufflers with the Z-R1 tips. They say they only fit on the 84-90 models.....but I have seen many 91's with thses mufflers installed! Other than that.......I beleive that no other part of the exhaust was different. Of course the 91 was the last year to use clamps...the 92 and up have a completely welded system....which requires cutting for modification.
:cheers:
I am planning on getting the MAD Performance mufflers with the Z-R1 tips. They say they only fit on the 84-90 models.....but I have seen many 91's with thses mufflers installed! Other than that.......I beleive that no other part of the exhaust was different. Of course the 91 was the last year to use clamps...the 92 and up have a completely welded system....which requires cutting for modification.
:cheers:
Instructor
Joined: Nov 2001
Posts: 242
Likes: 1
From: Hershey PA
Re: Diffrence between 90 & 91 other than body. (Racer-X)
I looked at a lot of cars and gathered a lot of materials when I looked for mine.
According to the info I have:
--new option Z07--Z51 and FX3 combined, all heavy duty parts, for "aggressive" driving, coupes only
--power wire for cell phone, etc
--power delay for stereo/windows to operate after ignition off or til driver's door opened/15 minutes
--"Low oil" added to information center-new sensor installed in oil pan
--muffler changed-larger sections and "tuning" of exhaust note (improved performance, but no power rating change)
--AM band expended for more frequencies
--ZR-1 valet system revised to default to normal at each key cycle
All the other changes, like the ZR-1 like rear end, new design wheels, etc were cosmetic/body changes.
Hope this helps
According to the info I have:
--new option Z07--Z51 and FX3 combined, all heavy duty parts, for "aggressive" driving, coupes only
--power wire for cell phone, etc
--power delay for stereo/windows to operate after ignition off or til driver's door opened/15 minutes
--"Low oil" added to information center-new sensor installed in oil pan
--muffler changed-larger sections and "tuning" of exhaust note (improved performance, but no power rating change)
--AM band expended for more frequencies
--ZR-1 valet system revised to default to normal at each key cycle
All the other changes, like the ZR-1 like rear end, new design wheels, etc were cosmetic/body changes.
Hope this helps
