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View Full Version : GM 10 and 12 bolts: same drive shaft length used?



MyFriendScott
07-17-2011, 06:22 PM
I'm swapping out my 10-bolt for a 12-bolt. Will the drive shaft length need to be changed? Thanks in advance.

JEFFTATE
08-04-2011, 10:58 AM
They should be the same length .

carguy502
08-04-2011, 12:55 PM
They should be the same length .

Not necessarily. When I did the 8.2 to 8.5 upgrade, I needed to shorten me driveshaft by .5". My guess was a longer pinion gear in the 8.5, but I never had the chance to measure them. With anything regarding a driveshaft, I always measure, no natter what I see on the net.

Good luck!

Don

Z06vet
08-04-2011, 05:51 PM
i'm pretty sure the 8.2 10 bolt to 12 bolt in first gen is same shaft, as long as the pinion yokes are the same. I had to shorten mine with an 8.5 10 bolt as well.