Stroking a 318 to a 390
Found this out in the late '90s-LOL. Man was I impatient back then too! Had to wait another week to get the radiused Clevite bearings in. THEN it Plastigage'd a little tight, so I had to wait ANOTHER week for some .001" loose radiused bearings. Used 1/2 standard and the other 1/2 shell loose for perfect clearance. Tore down 10yrs later and they were still mint, cleaned 'em up and they went back in after a deglaze re-ring job. The weaker Eagle cast steel shaft needs 'em too! You CAN scrape the bearings, but to me that's ghetto. I did do it once on a friend's 471 with a 440Source crank, on the mains, since the B engine mains aren't readily available narrowed. Found out when IT bound-up on assembly. Knifed the edges, deburred and it worked fine. Now 440Source offers the bearings relieved by them, I don't think the bearing manufacturers are going to offer them like the Hemi/440 ones you can easily get. Here's an example of the 1/2 and 1/2 bearing trick in action:
Found this out in the late '90s-LOL. Man was I impatient back then too! Had to wait another week to get the radiused Clevite bearings in. THEN it Plastigage'd a little tight, so I had to wait ANOTHER week for some .001" loose radiused bearings. Used 1/2 standard and the other 1/2 shell loose for perfect clearance. Tore down 10yrs later and they were still mint, cleaned 'em up and they went back in after a deglaze re-ring job. The weaker Eagle cast steel shaft needs 'em too! You CAN scrape the bearings, but to me that's ghetto. I did do it once on a friend's 471 with a 440Source crank, on the mains, since the B engine mains aren't readily available narrowed. Found out when IT bound-up on assembly. Knifed the edges, deburred and it worked fine. Now 440Source offers the bearings relieved by them, I don't think the bearing manufacturers are going to offer them like the Hemi/440 ones you can easily get. Here's an example of the 1/2 and 1/2 bearing trick in action: