09-25-2009, 01:03 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,005
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And this is Barry's Stage X info...
Is this easier?
April 17 2007, 4:23 PM
Just the Edelbrock heads. All flow data shown is SF1020 bench @ 28" - - same operator, same setup, no pipe on exhaust...good comparable numbers...
The stock Edelbrocks are just taken out of the box and flowed - no work at all. Certainly good enough for a mild stroker or a small displacement motor, but likely to run out of breath on a bigger cube or higher RPM combo.
The Stage X heads are completely untouched in the ports. The only changes are in the valves, valve job, and spring combination. The target customer is building a street oriented 427 or 428 stroker, adn does not want or need to spring for the fully ported package. This gives them a modest cost upgrade.
The CNC Edelbrocks are fully ported and have much larger cross sections - especially on the exhaust side. Definitely targeted toward big cube and higher RPM guys that are willing to sacrifice some low end response. And bigger coin too...
Barry Rabotnick
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