What are the pros and cons of Vortec heads?
I would like to know the what the pros and cons are on vortec heads. I recently fell upon a set of 062 heads.
I know I need to have the guides machined to handle up to .550" lift, and the spring area has to be machined to handle doble springs. If I use beehive springs from Comp can I get away from some of the machine work? I also know that these heads stop flowing after about .550" lift, so I decided to go with a Comp 276/284 roller with .502/.510 lift+1.6/1 roller rockers, and It keeps me streetable with 13" of vaccume and a powerband of 1900-5600 RPM.
What compression ratios do I need for this cam and head selection? I know that these heads don't require as much timing. Why???
Just doing some homework. Thanks.