Valve Spring Tech - Rev Happy

Controlling Valve Bounce With Beehive Valvesprings

John Nelson Jan 4, 2007 0 Comment(s)

GLORY RUN
The point of this exercise was to demonstrate the vastly improved valve control we achieved by switching to beehive valvesprings, as opposed to chasing peak power. Ah, who are we kidding? There was time for a glory run at the end of the day, and this is CHEVY HIGH PERFORMANCE, right? Dyno details are as before, except we bumped the timing up to 39 degrees and fattened up our Mighty Demon mixer with an 85 primary/90 secondary jet combo. Our rev-happy 406 rewarded us with 4 more horsepower and 11 extra pound-feet of torque when compared to our Jan. '07 test, made with a 750-cfm Mighty Demon, with gains shown throughout the powerband. Our old nemesis valve bounce was nowhere to be found.

Average torque 490.4 lb-ft Average power 447.3 hp

Sources

Comp Cams
Memphis, TN 38118
800-999-0853
http://www.compcams.com
Coast High Performance
Torrance, CA 90505
310-784-1010
www.coasthigh.com
Powerhouse Products
Memphis, TN 38118
800-872-7223
http://www.powerhouseproducts.com

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