3.55 Gears. Will it work?

[302RWP]

hello all, i don't really know much and i was wondering if you could put some 3.55 gears off of an 89 mustang gt onto a 66 mustang with a 4 speed. the reason i ask is because i found some cheap from a neighbor and i wouldn't mind upgrading. thanks to any and all replies in advance.

 

[Jonstantine]

nope - the gears arent designed for your rearend

although, you could probably put a new rearend in it - although it would be some fabrication and probably not worth it in general

 

[LMan]

No. 8.8 and your 8" differential are completely different designs (integral carrier v. removable), besides the ring gear diameter.