3rd Gen 8 3/4 swap

[FLG]

Currently have 8 1/4 and going to 8 3/4 (727 Tranny). Will the drive shaft need to be changed? I vaguely recall not needing to but i figured id ask.

[lisiecki1]

you shouldn't have to change the driveshaft unless you're changing the trans from 904 to 727 or vise versa.......

[Mick70RR]

Sizes are here

http://www.bigblockdart.com/techpages/diffchart.shtml

I did this swap many years ago and remember getting the driveshaft shortened.

[lisiecki1]

you shouldn't have to change the driveshaft unless you're changing the trans from 904 to 727 or vise versa.......

when i swapped mine about 10 years ago i didn't have to change anything.....was a 360 with a 904 trans......but if you aren't changing the trans i can't see why you would need to have it shortened.

[Rolling_Thunder]

dont forget about yoke sizes - i know the 8 3/4 has two different yoke sizes - dont know anything about the 8 1/4

[firefighter3931]

dont forget about yoke sizes - i know the 8 3/4 has two different yoke sizes - dont know anything about the 8 1/4

Spicer makes a conversion joint...you may need it if the 8 3/4 center has the large 7290 yoke. 


Ron