RockinDave

OK so my differential blew last night... will an ap2 Differential fit an ap1?... (04-08 fit an 00-03) and is there any benefit to doing so or should I just stick with an ap1?

mxt_77

You should check the UTH forum, but I'm pretty sure the answer is yes.

CosmosMpower

Yes but you need to change a flange or something like that.

RockinDave

... What is the UTH Forum?

thatguyjosh

Under The Hood

It's a subforum here at s2ki

RockinDave

ok i just put a post on the uth thread maybe i can get some answers there

DFWs2k

yes you need to change the output flange (ie, keep your ap1 output flange and put it on the ap2 diff), unless you are getting an ap2 transmission as well.

ap2 diff is a little stronger and the gearing is a little different, lots of people say f20c with ap2 gearing is a better match up than f20c with ap1 gearing.

JonBoy

AP2 diff is indeed stronger but it has the same final drive (4.10) as the AP1.

The AP2 transmission is geared shorter and provides an excellent match to the AP1 motor as it boosts torque (mechanically) to the wheels while still allowing for that glorious redline.

mxt_77

Actually, by "check" I meant "search".

I did a search on "diff swap" in the "UTH:Technical" forum and this was the 3rd result:

04 dif swap into 00-03

I think it has all the answers you need.

RockinDave

thanks guys... I just went back with an ap1 diff. I didn't feel comfortable with a maybe it will maybe it wont work answer for my daily driver! good luck to those who try it out!