340 main caps

How the registers are cut in relation to the cap is the problem there little different in each block, you end up with the cap sitting off set to the main bore. So Machining the register one way or the other to scoot the cap over and then if possible Re swedging/staking them to snap in...then a line hone hopefully is enough...
Anytime though you have to 'line bore' you're definitely going to end up with a chain that's jus a little loose..sometimes even a .010 under chain is loose.