Duane
Well-Known Member
Bushing the lifter bores or tubing the block to "safely" run a roller cam is hardly unsolicited. It has been documented in just about every major Mopar small block performance book.Well the OP has pretty much the same camshaft and everyone is jumping on his *** about how its going to blow up. So I guess its business as usual on the ole internets. I am pretty sure that the OP can draw his own conclusions. He is here sharing his build and everyone is offering their unsolicited advice. And my oil pressure is not probably OK its PERFECT. So maybe the OP should take your advice with a grain of salt.
Running them without these mods sucessfully is a combination of the style of lifter and how much lift.
Even the great guitar jones oiling thread that is a sticky on this forum shows how to tube the block. It is not expensive.
If you truly have 1.8 rockers, you are gaining all your lift from the rockers. Your cam lobe lift which is the actual problem is not very high so that is probably why you do not have any problem.
The op has .650 lift cam which is in a range that "possibly could be a problem.
Oil pressure is not the only reason not to run a roller without tubing or bushing. All you need to do is have a pushrod failure at high rpm and your oil pressure will quickly go to zero and ruin your bottom end. Not so if you tube or bush the block.
By all means take this with a grain of salt.