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hey guys! i'm not talking about gray hair vs youngblood!just wondering what kind of gains might be realized by going to a pair or world products sr torquer headsw/170cc intake runners,2.02/1.60 valves,76 cc chambers]? .i am presently using 76cc chamber bowtie heads that have 2.02/1.60 valves and some porting.come on! give me your hard earned gray cells! thanks and thanks again,jimm
 

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Jimm, without knowing your cam design this is a tough one. I would say that there would be the most improvement in the low to midrange (30-45HP) due to the increased flow speed with a mild gain up top (10-25HP). This is a real stab in the dark though.
 

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Ahhh... that is a little bigger cam than I assumed, just turn those figures around that I just posted and that should be close to what you should expect. Sounds like a real thumper your building.
 
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