Somebody correct me if I'm wrong but I believe the Pro Comp heads are Chinese. Did you already have your intake mounted on it? Heard you have to use the Pro Comp intake for proper fit but maybe you can clarify.
Also at 58cc combustion chamber can you give details on pistons? I imagine they are dish due to the small combustion chamber size.
I would recommend a different head with 64cc combustion chamber and forged flat tops. The Sportsman 2's are a good economy head.
I've always used Comp solid flat tappets in the past and have had good experiences with them from the 273 extreme to the 292s.
Are you running power brakes? If so the 280s magnum would suit you well. I believe they are 248 at .050 duration, .510 lift and 110 lobe centers. I used 1.6 ratio rocker arms and was able to squeeze between 400 and 420 hp from my 350 using a victor junior and Holley 650 dp.
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Gaetano Cosentino
Last edited by Track Junky; 09-05-2012 at 11:14 PM.
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