7M-GTE Heads: Polyquad v.s. Oversized Intake Valves

IndigoMKII

New Member
May 9, 2011
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Madison, Virginia
SmithElite12s;1935920 said:
so .5 is going to save you the hassle? But to clear things up all you need to do to run +1 is to grab a carbide and unshroud the combustion chamber walls

What is your goal for running the bigger valve? With these being FI engines, you don't need to open up the valves to make power. The same goes for the swirl effect on the combustion chamber gases to help them escape, the pressurized air forces any unspent gases out.
 

SmithElite12s

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Feb 27, 2012
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West Fargo, ND
CFM is power so it never hurts to increase the amount of air you can flow into the chamber even if there is a turbocharger to force it in. Plus with an aftermarket bottom end a built up top end is going to help bring out it's potential.