Is .540 the number??I think I remember some talk about how much lift you can run before valve to piston contact becomes an issue.. Im not playing with clay..I think Dur. may also contribute??
The hyd roller used in the build Im copying
Its a vizard custom
224 @ 50
.528 lift with 1.5 rockers( they do run 1.6 and the lift is .563)
108LSA single pattern
I guess its a hard hittin torque cam that dosnt give up on top..
447 hp @ 6200 Rs and over 400 ftlb from (dont quote me on this)2800-4800Rs. on a vortec headed 350...
Id like to get as close to these numbers as I can..
Limited budget as usual.....One of these years Ill have that big inch SB!!!
Thanks in adv.
Hulk

I neglected to check mine (and with about .700" lift I really should), but I think it's a good idea regardless of lift. You should be sure it is good.

Peak lift is meaningless when it relates to valve-to-piston clearance. By the time the valve is at max lift (either the intake or the exhaust) the piston is 2 full inches down the bore- no possible chance of contact at max lift. What matters is duration, LSA, the installed ICL and how aggressive the cam is ground. Also important are what pistons you are using, their deck height, how thick are the head gaskets you are using and if the heads have been milled. Sound like a cop-out? It is. You need to check.

http://www.iskycams.com/votc.php

Ive never had a problem but I always check

are you copying the sledgehammer build? What's the advance duration numbers? Also I would check just to make sure.

Ive never had a problem but I always check
+1^ cheap insurance for piece of mind....:cool: