C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Threshold changes

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Old Sep 12, 2018 | 02:19 PM
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Default Threshold changes

Hello CF

When did Chevrolet change the threshold of the C4 Corvettes?
I can't get into a 1988, but with a bit of contorting, I can get into my 1996, and once I'm inside, it's very comfortable.
I know they changed the back of the Corvette where the tail lights are from concave to convex in 1991, is that the same time they changed the threshold?
Thank you
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Old Sep 12, 2018 | 02:23 PM
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As far as height,I didnt think there was a difference between 84-96...
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Old Sep 12, 2018 | 03:30 PM
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Seat differences perhaps?
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Old Sep 12, 2018 | 03:40 PM
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Default Threshold changes

Yes, they definitely changed the threshold / sill height.
Would like to determine when exactly that change occurred.
Thank you
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Old Sep 12, 2018 | 04:32 PM
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I've never seen any mention of a change to the physical sill height. The interior and specifically the seats underwent a significant change in 1994. The 94 - 96 sport seats had much different "seat-cushion" bolsters making it much easier to slide on & off (in & out) when entering or exiting the car.
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Old Sep 12, 2018 | 04:41 PM
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Originally Posted by Scarab1988
Yes, they definitely changed the threshold / sill height.
Would like to determine when exactly that change occurred.
Thank you
No they didn't. Other than the trim/carpet that they used, nothing changed.
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Old Sep 12, 2018 | 08:27 PM
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I believe there were changes to the dash also that made entry/exit a bit easier on the later models.
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