some engine builders use rev kits and others do not. One engine builder claimed that it took 15 hp to run a rev kit, but I doubt it. Another builder said hell no i do not use rev kits. What is wrong with them. They are hard to install on an engine I have found out. No one makes a tool to install them that I know of. The springs are hard to compress. Can you use on roller and mech. lifters?
I don't think they would use near that much power to run. They do seem to help the Roller lifter wheel/bearing life considerably. By keeping the wheel in contact with the base circle of the lobe it keeps the wheel from skating for one and from smaking the opening ramp when taking up the valve lash. Can only be used on Roller lifters. Install can be a bit tricky, for one the heads have to be machined to accept the rev kit plate, I have just used some muscle and a thin piece of flat stock, or straight screw driver to install springs.
my engine builder explained to me todays valvetrain components are light enuff not to need them, obviously length and dimentions of your products would need to be kept in mind? I installed one set on my 360 a while back and agreed it was a pain in the ass..
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