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Old 07-05-2012, 05:16 AM
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Should I Use My Rev Kit Or Not

327 engine with solid roller makes about 475-500 horsepower at 6500. Crower rods and shift points at about 7200 RPM.
I had slightly softer springs installed in the heads and was using a rev kit at the time. Have recently replaced valve springs with recommended (actually, Comp's "first choice") beehive springs.
Is the rev kit still necessary? If I use it, is it adding too much pressure to the cam and lifters?
Thanks in advance.

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Old 07-05-2012, 05:46 AM
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youre not going to add to much pressure with a solid roller. revkit is added insurance if something goes apart keeping it contained . i think its a preference. youre rpm isn't really that high
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Old 07-05-2012, 08:29 AM
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I have an Isky revkit on my blower car. I don't see where a revkit will keep anything contained in case of failure, ask anyone who's had a roller lifter come apart, or cam break, hardened roller pieces and needles throughout the motor, along with cam lobe material. You'd probably find parts of your revkit in the pan along with it. I consider 7,200 rpm's substantial. Depending on your spring specs, you could be OK without it. That being said, my choice would be to use it as insurance for what it's designed to do, help avoid valve float at higher rpm's and cam lift. JMO, everybody has one. I'm not a professional engine builder, but I do build my own.
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Old 07-05-2012, 08:51 AM
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Look at your max combined spring pressure, you're likely well under what your cam and lifters are rated for. A rev kit will keep the roller on the lobe, always a good thing.
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Old 07-05-2012, 02:28 PM
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Im a huge fan of the SJ 327 SBC! i dont think anything sounds like a 327 @ high RPM, and im always looking for another one to build xP seems like anything I do to a 327 works like magic ^^
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Old 07-05-2012, 03:23 PM
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Another vote for keeping the rev kit as long as you have it.

Especially important in street solid roller applications for keeping the roller wheel pressed against the cam lobe and rolling on the base circle(no lift) side of the lobe, instead of allowing the roller to float off the lobe due to the valve lash clearance. It has been mention on some pro builder sites that allowing the roller to float on the base circle leads to skidding and pounding of the roller wheel.

I'd use it, and no worries about too much pressure, the amount added is negligable as far as pressure the roller wheel feels.
Opening the valve is far more pressure then the rev kit spring adds.
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