Cliff notes:
stock 3100 and 3400 heads outflow race ported Iron heads by .350" lift, stock 3500 heads do it by .250" lift the data doesn't lie, and it's from multiple sources.
Race Ported "falconer" 2.8/3.4 heads:
source:
http://www.thirdgen.org/tec...s-falconer-race.html
My 3500 heads.
more flow data here for 3100 and 3400 heads
http://wot-tech.com/shop/gm...ervices/cat_140.html
stock 3100 and 3400 heads outflow race ported Iron heads by .350" lift, stock 3500 heads do it by .250" lift the data doesn't lie, and it's from multiple sources.
Race Ported "falconer" 2.8/3.4 heads:
Code:
Lift #1 Int #2 Int 0.100 58.7 58.0 0.200 110.5 110.8 0.300 135.7 138.6 0.400 145.0 142.1 0.500 149.5 151.0 0.600 151.0 152.5 Lift #1 Exh #2 Exh 0.100 56.9 58.4 0.200 101.9 100.2 0.300 140.0 138.2 0.400 149.0 152.1 0.500 152.2 153.6 0.600 153.7 153.6
http://www.thirdgen.org/tec...s-falconer-race.html
My 3500 heads.
more flow data here for 3100 and 3400 heads
http://wot-tech.com/shop/gm...ervices/cat_140.html
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