Hey guys, this is a good question for one of you tech genius
So I bought a block already bored .030 over for 30 dollars.... you heard me 30 dollars While rebuilding, I heard about 062 Vortec heads, and I may be able to get them. I am definately going with them if I can snag some. I need a cam that the heads can handle.

My question is.. How big of a lift can these heads handle with stock springs and rockers? I am aiming for at Least .460

Thanks to anyone who answers my question.

 

Max lift according the CHP, which may or not be right, is .420 to .430

....but you can mod the valvetrain/springs to handle whatever you need. I wouldn't stop at such low lift after all the work to build the motor.

 

Ah well, I beleive it may be closer to .460 but I am unsure. The reason I want to go with stock springs is a money issue. I can always upgrade to a bigger cam and springs in the future. I have all the tools needed.

 

The springs are not the limiting factor on Vortec heads. It's the bottom of the retainer hitting the top of the valve guide boss/valve seal. The set I had a few years ago would take about .450" ish. They require machine work for more lift.

 

YES SIR!!!! You're right. ....I was thinking stock L98 heads, which is something I dealt with a few years back. Sorry for the mis-info