Corvette 10 bolt gears same as "pumpkin" 10 bolts

[Skip FIx]

Our Impalas etc with a pumpkin take a 17 spline pinion. 63-82 vettes also did. But all the new gear sets for them use a 30 spline -which uses a new yoke. Were the old 17 spline interchangeable with Vette gears?

 

[1958 delivery]

only Vets up to 62

 

[425/409ER]

Didn't 64 and later Vettes use 12 bolt stuff.

 

[Skip FIx]

No 12 bolts from the factory, but Tom's Differentials and now Strange has conversions($$!). They were a 10 bolt from 63-82 17 spline pinions and side gear/axle stubs for the IRS. So a 30 spline 12 bolt conversion is a good upgrade for high HP motors. Why I as wondering how different the posi is in them and ours are.
Wonder if an 8.5 GM 10 bolt posi would fit in our pumpkins? 28 and 30 splines for axle spiders available.
Some of the later Vettes used Danas.