8.5(10 bolt) to 12 bolt?

vickysbu

Amateur Racer
Jan 14, 2011
163
0
0
Low End
Car is 78' Malibu, I just recently installed the A-body 12 bolt and now my driveshaft is too short. I haven't read anything that said the DS would need to be longer when going from the 10 bolt to a 12 bolt. Has anyone else experienced this?
 

1981Regal

Dragway Regular
Mar 10, 2008
1,274
0
0
Cincinnati, Ohio
There is a 1 inch difference between a 7.5 and the 8.5 driveshaft length. the article you seen was probably where they had swapped from a 7.5 to a 12 bolt. I'm not to sure of the details for a 12 bolt swap but would venture to say this might be the issue.
 

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