454 missing caps

[Mike Taylor 3601]

Originally Posted by Rich Biebel

Mains were bored after caps were installed and caps don't all interchange well. The Register locates the cap so when replacing caps, it usually meant trying a number of them to find a close fit first. Once your close it can be align bored and or honed. You could find a cap that fit the register but the bore was off too far to align bore it. Aftermarket caps are small to allow for this issue. Most shops saved old caps just for this purpose.

I have done a truck load of blocks like that, occasionally you will come across a block that is different than every cap you try, on those you can shift the cap by welding cap where it goes in block and cut the other side,to move it to where bore lines up,I use machinable nickel rod,
Mike Taylor 3601