I'm not telling you the best way, or the right way; I'm telling you what I did...
I take the heads to the machine shop ONLY to have the guides cut down by .250" (that's a quarter of an inch for non-math people) and then I buy high lift SINGLE SPRINGS that are good for .600 lift max from PAW.
The part number was 10701, single with dampner, .600 lift, NO MACHINE WORK REQUIRED TO RUN, for 75 bucks.
PAW 818-678-3000
I ran those on a 400 small block with a mild build that ran 12.78's all day long in a 79 Z28. I know people are gonna bad mouth those springs, but who cares? I can tell you they worked great for me; maybe someone else didn't have the same results...
Good luck whatever you decide, keep in mind it doesn't cost more than a hundred bucks to have your heads machined for dual valve springs and have the guides cut down.
I am a SEVERE budget guy, so if I can get away with something, I will![/u][/i]
I take the heads to the machine shop ONLY to have the guides cut down by .250" (that's a quarter of an inch for non-math people) and then I buy high lift SINGLE SPRINGS that are good for .600 lift max from PAW.
The part number was 10701, single with dampner, .600 lift, NO MACHINE WORK REQUIRED TO RUN, for 75 bucks.
PAW 818-678-3000
I ran those on a 400 small block with a mild build that ran 12.78's all day long in a 79 Z28. I know people are gonna bad mouth those springs, but who cares? I can tell you they worked great for me; maybe someone else didn't have the same results...
Good luck whatever you decide, keep in mind it doesn't cost more than a hundred bucks to have your heads machined for dual valve springs and have the guides cut down.
I am a SEVERE budget guy, so if I can get away with something, I will![/u][/i]
