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Manley proflo How do they really help power????

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Old 03-09-2004, 01:21 AM
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Car: 88 camaro
Engine: L69 305
Transmission: TH350 3000stall
Axle/Gears: 3.42
Manley proflo How do they really help power????

I have change my stock vortec valves for manley proflo ones.How many HP i will gain???Since they have a steam cut to help the air flo.
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Old 03-09-2004, 09:44 PM
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Actual power gain will depend on a lot more than the valves. The port design, total valve lift, valve timing, and chamber/piston design will affect intake flow greatly. The Race-Flo or Pro-Flo valves will only minimize the restriction imposed by the valve stem in the valve bowl.

It certainly can't hurt, but I doubt that anyone will be able to attach a definite "HP gain" number to the change.
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