Originally Posted by AndyF
Originally Posted by Supercuda
No need to repop FMJ spindles, but yes Fatman Fab makes a dropped one.

The FMJ spindles have been in production from 1973 till 1989 in B, F, M, J, R bodies.

The A body spindle is 73, 74, 75, 76.

Probably 15 FMJ spindles for every A spindle made.



There are a couple of different "FMJ" knuckles. I use the later style which is lighter weight. Either will work, but the latest ones are 1.5 lbs lighter. I think some engineer at Mopar finally learned how to use finite element analysis in the 80's since the last version of the knuckles shows that they took weight out of areas with no stress.


I have read that in general the "FMJ" knuckles are lighter than the 73-76 A body knuckle but are you saying that later versions of the "FMJ" knuckles are lighter still? If so, what years/models does one need to target for these even lighter 'FMJ" knuckles?