Wow.....Now I'm scared. My BA-10 POS is on its last legs, I guess with the head swap and re-gearing it to 4:56 it couldnt hold up to the increase in power and torque. I found an AX-15 from a 93 or 94 yj at a local junkyard. I was thinking of doing this swap but now I'm confussed. I know the PO had installed an np231 to the ba-10 so I'm assuming its the AMC model. I really thought this was a simple and cheep swap out. After reading all this i'm a little paranoid. The junkyard ax-15 has about 147,000 miles on it so It will probably need to be overhauled as with the new NP231J. They want $400 for the tranny and another $250 for the TC, so right off the bat I'm into it for over $650. Add in a clutch kit $250-$300 and all of the other accessories pilot bearing, input shaft, internal/external slave (not sure which one to get), speedo cable, throwout bearing,and and for all I know a new master cylinder. That adds up, thats not including overhauling the tranny/tc, which will probably cost another $500-$600. Thats well over $1500, I had hopes and dreams of being able to instal an SYE and driveshaft in the proccess but thoes dreams are fading fast. Does anybody know a more afordable way or am I over exagerating the cost and difficulty?
87 YJ IIIII
3.5in BDS, 1" daystar MM, Posi Lock, D-30 w/Tru-track, Stock D-35, 33x12.5x15's, 4:56, 4.0l head swap, AX15 Swap, HEI, Howell TBI. AA SYE, Tom Woods DS.