Bobzilla
Well-Known Member
They are not. The 10239 is a smaller diameter than the 10235. The 10235 has three bolt patterns for the torque converter, including the larger diameter pattern with holes for the little 5/16" bolts. The 10239 is smaller diameter and does not have that larger diameter bolt pattern specifically because no 904 ever used that pattern.Actually no, it would have been the 10235 for the cast crank 340. Not sure if they're the same Dia but assume so
I don't have experience with the 12039 yet either so I don't know if it has that clearance issue. But I would like to know.