The Edelbrock cam has a whopping 87 degrees overlap, 35 degrees more than the Voodoo 703 cam.
One source... Increasing overlap increases top-end power and reduces low-speed power and idle quality. The goal to make valve overlap useful is maximizing power output to the RPM band the engine is designed for. Commonly overlap can range from 60° to more than 100° on a race application, a mild street application operating between 25° to 55°, compared to a stock engine of between 15° to 30°. with that is the statement is not knowing the cubic inches involved.
( Issue with those numbers is cubic inches involved, but it serves the point )
There is no downside to lift. If there are no clearance issued involved, more lift is always better. If you want to build a street motor with the most power without a sacrifice of idle and low speed qualities, then lift is the most important factor to maximize, not duration. The best street cams are those that seek to maximize lift while only adding a minimal amount of duration.
Edelbrock cam 0.470" lif
Voodoo cam 0.489" lift
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 )
Old information here:
http://www.hotrod.com/articles/0712p...tiac-trans-am/
Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine)
Best time 5.13 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE
Last edited by Steve C.; 04-09-2019 at 06:41 PM.
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