73northernchallenger

The father in-law just gave me 1973 challenger with a 68 dart 340 with WW2 heads. Tore the motor down as it was not stored properly, it has a new crank and pistons but who ever put the motor together didn't clean the engine properly and the bearings have score marks in them. The bearings are Dab bearings with the numbers 83 7132 CAP L 0-39 0-39 D49 and have .010 written on the underside of the rod bearings, and the main bearings have .010 written on them as well. Can someone tell me what these numbers mean or where I can find some information on these bearings. I don't know if this .010 oversize or .010 undersize. Please help.

mr340

The crank has been cut .010 so the bearings are .010 thicker than stock.

73northernchallenger

So that would be .010 oversized? Thanks for the reply.

mr340

That makes the bearings +.010 (over), the crank is -.010 (under)

73northernchallenger

Thanks.

73northernchallenger

So i measured the crank, the crank came up as 2.498 and the rods came up as 2.125, it looks like to me that somebody turned the mains and not the rods journals. So I would need .010" over on the mains and std on the rods. Is this correct.