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aerohead · 10-31-2009, 02:01 PM

I ran across an article in HOT ROD Magazine's Feb. 2008 edition entitled "THE MANIFOLD MAN."
Some intake manifolds were ported,evaluated on a Superflow Technologies Group flow bench,then installed on a 410 cubic inch Chevy small-block and run on a SuperFlow 901 dyno at Westech Performance Group.
The best results came from an Edelbrock Super Victor manifold,here's what's interesting:
Between 3,600 rpm and 4,800 rpm,the engine alternately gained or lost horsepower.
At 5,000 rpm a positive horsepower trend was finally established with a 2-HP gain.
At 6,800 rpm the engine developed its maximum 615-Bhp compared with 602-Bhp for the un-ported engine,a 2.16% power increase.
The engine was operated with an open velocity-stack on the intake and open headers( vented to outside the test cell) for the exhaust.

10-31-2009, 02:01 PM	#8 (permalink)
aerohead Master EcoModder Join Date: Jan 2008 Location: Sanger,Texas,U.S.A. Posts: 16,272 Thanks: 24,394 Thanked 7,363 Times in 4,763 Posts	manifold I ran across an article in HOT ROD Magazine's Feb. 2008 edition entitled "THE MANIFOLD MAN." Some intake manifolds were ported,evaluated on a Superflow Technologies Group flow bench,then installed on a 410 cubic inch Chevy small-block and run on a SuperFlow 901 dyno at Westech Performance Group. The best results came from an Edelbrock Super Victor manifold,here's what's interesting: Between 3,600 rpm and 4,800 rpm,the engine alternately gained or lost horsepower. At 5,000 rpm a positive horsepower trend was finally established with a 2-HP gain. At 6,800 rpm the engine developed its maximum 615-Bhp compared with 602-Bhp for the un-ported engine,a 2.16% power increase. The engine was operated with an open velocity-stack on the intake and open headers( vented to outside the test cell) for the exhaust.