Mid year accelerator pedal

[Ed S.]

Can someone tell me which of these two accelerator pedals is "correct"?

Over the years there has been a lot of discussion about the "squareness" of the two outer groves. I believe vendors had corrected this problem - all the usual suspect vendors sell pedals with groves that are squared at the top - none are rounded.

But....... notice in one of the attached pics, the two outer groves are noticeably shorter than all the inner groves. This is what the vendors are selling - all of vendors that I have checked have the pedal with short outer groves.

The pic of the other pedal I attached was copied from a 2007 post in this forum and the author stated that the pedal was an original. Notice all the groves are the same length across the top.

So my question is - which pedal is correct, the one with all the groves the same length or the one with the shorter outer groves?
BTW - the application is for a 64.

[E S.]

Re: Mid year accelerator pedal

Hi- Here's a pic of 66 # 37xx (Fairly certain it is original to this car)
E.J.IMG_20210521_145502938.jpg

[Ed S.]

Re: Mid year accelerator pedal

EJ - thank you, you have confirmed my suspicion.

[E S.]

Re: Mid year accelerator pedal

Ed- You are welcome
E.J.

[Bernie B.]

Re: Mid year accelerator pedal

My early 64 coupe has the shorter grooves.

[Ed S.]

Re: Mid year accelerator pedal

Thanks Bernie - I'm convinced, short groves it is.

[Jimmy G.]

Re: Mid year accelerator pedal

If memory serves me correctly, the long grove one was a repo and I think also offered by GM about 25 - 30 years ago

[Ed S.]

Re: Mid year accelerator pedal

Thanks Jimmy - amazing, a fella can't even rely on GM to reproduce an original GM part correctly. What is this world coming to.

[Joe L.]

Re: Mid year accelerator pedal

Thanks Jimmy - amazing, a fella can't even rely on GM to reproduce an original GM part correctly. What is this world coming to.

Ed------


The GM part was never intended to be a reproduction. It's a replacement. The original 1963-67 Corvette accelerator pedal was GM #3830510. The latter was discontinued and replaced by GM #2388493 in June, 1971. The 2388493 was originally used on 1963-64 Chevrolet and GMC forward control trucks. Apparently, GM considered it functionally equivalent and otherwise close enough to replace the Corvette pedal for SERVICE.

The GM #2388493 is supposed to have that part number embossed on the rear. I don't know if the 3830510 had an embossed part number.

I might add, I would expect more differences between the 3830510 and the 2388493 than just the "end groove differences. I would expect that that kind of difference alone would not have even justified a difference in part number. In fact, I could see two different manufacturers to have that much of a difference making the same part with no complaints from GM.

[Joe L.]

Re: Mid year accelerator pedal

All------


I checked an NOS example of the 2388493 that I have. It has a completely different "tread pattern" than the 3830510. Otherwise, it appears to be configured the same. Based on the "tread pattern", no one would ever mistake a 2388493 for a 3830510. However, they would be equally functional, as would be expected. But, the 2388493 was the only pedal available from GM after June, 1971. I doubt that very many 1963-67 Corvettes would have required an accelerator pedal replacement before that time.