Z51 question

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Jun 19, 2024 | 06:43 PM

C7nut

Thread Starter

Burning Brakes

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Z51 question

Probably no different but does a C7 Z51 shift at different speeds or differently then a base version?

Jun 19, 2024 | 07:08 PM

Gearhead Jim

Team Owner

Joined: Sep 2000

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From: Far NW 'burbs of Chicago

St. Jude Donor '13

I believe the automatic shifts at the same RPM in either car, but the automatic Z51 has a higher (numerical) rear axle than the base car and so the shifts come at a lower mph. This probably improves the acceleration times, and definitely makes the car feel a bit "livelier".

Since I'm a shiftless guy, I don't know how it works out for the stick.

Jun 19, 2024 | 07:15 PM

gordoni

Instructor

Joined: Apr 2023

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From: Pacific Northwest

IIR, the gear ratios are numerically lower for the Z51 than the base. I don't recall the ratios at each gear, but having owned both a base manual and a Z51 manual, I can attest to the Z51 having a lower ratio in at least 1st and probably second.
Here's a link to an article that charts the gear ratios for Both the manual and the auto.
https://www.motortrend.com/news/1601-a-quick-look-at-the-corvettes-7-speed-triple-overdrive-transmission/

Last edited by gordoni; Jun 19, 2024 at 07:30 PM.