01C0bra

I am getting 4:10 gears for my 2001 cobra but wasn't very sure what I exactly needed (parts etc..). My friend is doing the labor work for free! So that's nice. I know the IRS won't hold too much power but I'm going to swap out pretty soon. So what will I need to buy? 31 spline etc..?

sn95_331_GT_ yellow

i thought 01 Cobras came with 31 spline axles already?...

and just the basic gear kit from any the parts sites should do the trick

Seabee1993

American muscle has a very detailed installation for gears. That may be a big help.

AMWill

I always thought the 99-01 Cobras had 28 spline axles, but I never really looked into it so that may be the case. Either way, I wouldn't upgrade anything except the gears if you're planning on pulling the IRS soon.

If you just want 4.10 gears we do sell some by Ford Racing. You can also include a Gear Install Kit, with or without new bearings, as well.

Hope this helps! Let me know if there's anything else I can do!

Shane

uberstang1

Im pretty sure the 99 had 28 spline, then 01 started 31 spline.

AMWill

Okay that makes sense. Thanks for clearing that up for me. That's something I should've known by now haha.

Shane

01C0bra

Oh ok. Also another question, will an 03/04 stock air intake fit and pass smog on my 01 cobra?

slc_punk1988

I've heard really good things about the AmericanMuscle kits. Bearings, traction lok etc. I'm doing all that in a couple months, probably 3.73s but I'm trying to talk myself into beign a real man and getting the 4.10s.
Time to nut up or shut up!

MyCobra4.6

A 3.73 and even the 3.90 wont make a much a difference if your stock gear is 3.55 or 3.20ish .. It's not worth the money .. You will feel a "seat of the pants" with a 4.10 and some guys in my area with 96-98 cobras run 4.30 gears and love em ..