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jrcaprai · 07-25-2010, 01:12 AM

I am actually very Familiar with the Differences Between Dual plane, Single plane and Tunnel Rams, and Dual Quads...
There is a test a while back in Hot Rod (I think thats the correct mag, I have it somewhere) where they tested a whole Batch of Dual planes, and the same amount of Single Planes, one Dual Quad, and a tunnel Ram also... the Tunnel Ram made the Most Top End power, followed by the Single planes... The Edelbrock RPM Air-gap outdid the Vic Jr, and the Super Vic to about 6500 RPM, then the single planes took over up to like 6900 RPM, where the engine topped out.. they Tested one Dual Quad intake, (which is what the OP said he had) which fell behind the Dual plane intakes in power output.

I lied... I just found the Magazine...(Chevy Hi Perf, Sept 08) they Didn't test a Tunnel Ram or a Dual Quad Intake... the Odd one they Tested was an Old 64 Corvette Manifold...

Brownfields... Yep didn't AFR buy them, or did they rename Brownfield to AFR ???
Still Great Heads anyhoo!

07-25-2010, 01:12 AM	#16
jrcaprai Registered User Join Date: May 2008 Location: Salt Lake City Posts: 365	Re: csb 350 head swap? I am actually very Familiar with the Differences Between Dual plane, Single plane and Tunnel Rams, and Dual Quads... There is a test a while back in Hot Rod (I think thats the correct mag, I have it somewhere) where they tested a whole Batch of Dual planes, and the same amount of Single Planes, one Dual Quad, and a tunnel Ram also... the Tunnel Ram made the Most Top End power, followed by the Single planes... The Edelbrock RPM Air-gap outdid the Vic Jr, and the Super Vic to about 6500 RPM, then the single planes took over up to like 6900 RPM, where the engine topped out.. they Tested one Dual Quad intake, (which is what the OP said he had) which fell behind the Dual plane intakes in power output. I lied... I just found the Magazine...(Chevy Hi Perf, Sept 08) they Didn't test a Tunnel Ram or a Dual Quad Intake... the Odd one they Tested was an Old 64 Corvette Manifold... Brownfields... Yep didn't AFR buy them, or did they rename Brownfield to AFR ??? Still Great Heads anyhoo! Last edited by jrcaprai; 07-25-2010 at 01:33 AM.