390 crank in 360 block

[tarior]

Anyone out there have a cut and dried recipe for using a 390 crankshaft in a 360 block? I am also thinking of turning the journals to 2.100" for SBC con rods, anybody have a recipe for this?

[ironman_gq]

i think the chevy rods are narrower and need to have material added to get the right side clearance between them

[tufcj]

The main webs on the newer 360 blocks isn't as thick as the old 360/401 blocks. You will have to notch the bottom of the cylinder walls for rod clearance (it was done at the factory on 390/401 blocks).

Lots of useful info in this thread.

http://www.bulltear.com/forums/viewtopic.php?t=1473

Bob
tufcj

[tarior]

Yeah, I have a '73 block, actually 3 '73 blocks and a '70 block. And a '74 401, and '75 401, and '78 401....maybe soon a '69 390; fingers crossed.