Common questions

What gear ratio does a Corvette have?

What gear ratio does a Corvette have?

Transmissions

Type: seven-speed manual with Active Rev Match seven-speed manual with Active Rev Match w/Z51
Gear ratios (:1)
First: 2.66 2.97
Second: 1.78 2.07
Third: 1.30 1.43

Do all Corvettes have Positraction?

A Positraction rear axle was an option, but over 95 percent of C3 Corvettes had it installed.

What is the rear axle and rear end ratio of a corvette?

Rear Axle/Rear End Ratio Information. All Corvettes built before 1981 had 1-1 transmission final drive gear ratios. This is the prime example of how an overdrive transmission change would benefit: 1969 Corvette with an original Muncie M20 that has a 2.52 first gear ratio with a 3.36 rear axle gear ratio.

Where is the rear axle identification code on a corvette?

If you look in the picture you can see the leaf spring plate and the torque strut bracket. The clean piece of metal in between is where the code may be stamped. Like fish said earlier, someone may have changed the housing and may not have the stamp in it. Or may have changed the gears and kept the housing.

What’s the gear ratio for a 1969 Corvette?

This is the prime example of how an overdrive transmission change would benefit: 1969 Corvette with an original Muncie M20 that has a 2.52 first gear ratio with a 3.36 rear axle gear ratio. Our combined first gear ratio would be [3.36 x 2.52 = 8.46], not too bad for a 427 cubic inch engine with plenty of low rpm torque.

Where is the gear ratio code on a Chevy?

Using the charts below, you will be able to learn alot about the rear differential in your classic full size Chevy. The gear ratio codes are located on the front passenger side of the differential as shown in the illustration below. This code will tell you the ratio, whether it is posi or not, any special notes and what plant it was made at.

Rear Axle/Rear End Ratio Information. All Corvettes built before 1981 had 1-1 transmission final drive gear ratios. This is the prime example of how an overdrive transmission change would benefit: 1969 Corvette with an original Muncie M20 that has a 2.52 first gear ratio with a 3.36 rear axle gear ratio.

What should the rear axle ratio be on a Chevy?

That 10.98 combined gear ratio will make even a smog motor small block Chevy feel good. If you went the other way and changed the rear axle ratio, the engine would scream—4000 rpm at 75 mph with a 4.11 rear gear axle ratio, adding extra wear to the engine and to your mental state.

This is the prime example of how an overdrive transmission change would benefit: 1969 Corvette with an original Muncie M20 that has a 2.52 first gear ratio with a 3.36 rear axle gear ratio. Our combined first gear ratio would be [3.36 x 2.52 = 8.46], not too bad for a 427 cubic inch engine with plenty of low rpm torque.

If you look in the picture you can see the leaf spring plate and the torque strut bracket. The clean piece of metal in between is where the code may be stamped. Like fish said earlier, someone may have changed the housing and may not have the stamp in it. Or may have changed the gears and kept the housing.

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Ruth Doyle