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Topic: Cleveland intake comparison
From: Belgrade, MT, 59714, USA
Registered: Aug 2004
posted 10-28-2004 02:43 PM
I'm slowly gathering parts for my "Cleveland in a FOX" project. I've got a couple of stock '70 cast iron 4bbl. intakes, one of which I was thinking of running to save money on the project. It's difficult to find good comparison data on intakes since the magazines' basically stopped doing much with these engines 20 years ago. That and little research has been put into STREET intake design for this engine in recent years. The excellent Blue Thunder intake is too tall and costly for my budget, and realistically a little North of my RPM range, even though it IS a dual-plane.
I will be running closed chamber quench 4V heads and flat-tops. 1 7/8" Headman Huslers, a Crane Hi-Intensity cam (.506/.519 lift,.224/232 degrees @.05 lift, 112 lobe centers, 2500-5500 RPM), 750 CFM mech. secondary Holley and a T-5 trans.
My questions are: Does the stock intake have any upper-end RPM advantage over the Edelbrock F-351 4V or Performer 4V intake? I know they designed this intake to increase velocity in the lower RPM range. Does it do that at the expense of midrange HP? Any objective information would be appreciated. Since this car needs to handle, the 30lb. weight savings would also be appreciated!
Todd & Judy Noel
'86 Mustang GT 5.0
'76 F250-460 Trailering Special
[This message has been edited by oddrodtodd (edited 10-28-2004).]
From: Lyons, IL, USA
Registered: May 99
posted 10-30-2004 09:29 PM
Either aluminum intake would be an improvement over the stock iron unit.
Your best running factory stock 351C engines used a 180 aluminum intake and similar Holley carb.
351HO and CJ.
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