Z88Z
01-27-2008, 10:05 AM
I'm looking into a 5spd to use on a 98 5.9 ZJ and trying to decide between the 3550 and the HD AX15.
First off - No NV4500. I don't want the 'almost granny' 1st gear.
Second - I'm not talking about a stock rated AX15. The unit in question is a "Heavy Duty" AX15 built by Aisin to rsgear specs.
On the Jeep forums the 3550 is almost always spoken of as an upgrade from the AX15. Recently I was corresponding with George at Tcaseunlimited about a Tcase for this build and he strongly adivsed against using the 3550 due to both strength and the parts availablity issues.
He said he has new Heavy Duty AX15s that are rated at 420 to 450 ft lbs input torque vs the 3550s 300 to 320 rating. Obviously this higher rating sounds better but it seems like almost no one has any actual experience with this HD box.
I'd appreciate any feedback on this HD box if anyone has one or knows anyone that uses one.
First off - No NV4500. I don't want the 'almost granny' 1st gear.
Second - I'm not talking about a stock rated AX15. The unit in question is a "Heavy Duty" AX15 built by Aisin to rsgear specs.
On the Jeep forums the 3550 is almost always spoken of as an upgrade from the AX15. Recently I was corresponding with George at Tcaseunlimited about a Tcase for this build and he strongly adivsed against using the 3550 due to both strength and the parts availablity issues.
He said he has new Heavy Duty AX15s that are rated at 420 to 450 ft lbs input torque vs the 3550s 300 to 320 rating. Obviously this higher rating sounds better but it seems like almost no one has any actual experience with this HD box.
I'd appreciate any feedback on this HD box if anyone has one or knows anyone that uses one.