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Old 03-10-2021, 05:51 AM
Murf Murf is offline
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Join Date: Aug 2000
Location: St. Marys Ks. U.S.A.
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Quote:
Originally Posted by PAUL K View Post
While waiting for a return phone call today I realized I had a pair of 72cc Edelbrock heads and Speedmasters waiting in line for some work. I studied them a bit side by side and thought I'd share a few observations.



Intake ports are CNC matched from both manufacturers. The Edelbrock in the first picture is blended and smoothed with a sanding roll. The second picture is the Speedmaster which is not blended or smoothed and leaves some large ridges which will have a negative effect on performance.



The exhaust ports on the Edelbrocks are CNC matched (to a specific size) and the Speedmasters are as cast.


Paul, first off thanks for posting this!

Are the Edelbrock’s intakes roll sanded from the factory or had you already work on them?

Do you have any plans to compare the flow of these heads?

Thanks
Murf


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