cam lift clearance

[buickpower]

what is the max cam lift you can run without milling down the valve guide bosses ? I have seen both .430 and .420, just wondered it actually was.

 

[KendallF]

You can run considerably more than that. I have run .46x" lift in several motors without touching the guide bosses.

 

[buickpower]

thanks

ok, thanks, that's a big relief