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Author Topic:   Valve Size
posted January 29, 2004 06:54 PM
I had a guy tell me that in the class i run it's a waste to put 2.02 valves in my heads and that the 1.94 will make more power. We run flat top motors 9-1 comp,stock cast 2bbl intakes,stock log type exhaust manifolds, stock 2bbl Rochester carbs and no Lift rule. Any thoughts on this?

posted January 29, 2004 08:18 PM
the thought there is with a stock head(untouched) the chamber shrouds the valve so anything bigger than 1.94 will not give you any more power. But I don't think it would take away any power.

Jason Boivin

posted January 30, 2004 07:09 AM
you have to remember a motor with limited intake capabilities relies on velocity to fill the cylinder if you put the larger valves in without increasing you intake capacity it will not help.

posted January 30, 2004 07:23 AM
On a short track with head intake and carb restrictions I havent been able to see any change.......I say spend your money somewhere else....good luck ....towman

posted January 30, 2004 07:39 AM
From past experience almost any head can be improved with the right port work I thought we were talking stock with no port work allowed and 9 to 1 compression.....towman

posted January 30, 2004 07:32 PM
he is talking about no porting tow

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