The top five cams turned out to be four well-proven hydraulic flat-tappet cams-two Magnums and two Xtreme Energy profiles-plus one of the dynamite new Thumpr hydraulic-roller grinds that has been out for just over a year (see cam specs table).
These cams have the original-design cam nose that fits ’55-’86 small-blocks.
But how well do they actually perform in the average engine?
To find out, Westech Performance recently put Comp Cams’ five most popular small-block Chevrolet cams to the test on a 10:1 355ci small-block, a test engine the company calls Gladiator. Cam The cams’ popularity rankings are based on Comp’s sales figures for discrete part numbers for the past two years.
more important, since large retailers often dispute CAM fees or pay only a percentage …
the CFO must know how to account for the difference, or CAM slippage.”Before you attempt to negotiate CAM or Administrative Fees, be sure that you understand what they are.
Worth every penny be aware some good tuners can tune without limiters cough cough. I loved the power these gave me for being NA car doesn't lope but the valve train noise coming out your exhaust sure does tell you you have stage 3 cams in the car above 4500rpm these cams pull hard I ...
And are worth 30-40whp depending on other supporting mo ...
Hydraulic roller lifters require an appropriately selected valve spring to maintain control and avoid lifter float at higher engine rpm.
Hydraulic roller lifters can be re-used with multiple camshafts, however they are more costly than any form of flat tappet lifters.
The camshaft is one of the most important factors in determining an engine’s torque and powerbands, able to make or break an overall engine combination.
On the street, hot rodders must tread a fine line in balancing performance improvement with overall driveability and reliability.
They require standard Chevy small-block timing chain sets and (with a roller cam) an antiwalk button.