Originally Posted by TrackPack
Looking for a recommendation on a set of solid flat tappet lifters for a cam that I want to try. I thought that tool steel would be nice, but read the following thread and decided that they may not be the best.

https://board.moparts.org/ubbthreads/ubbthreads.php/topics/2402051/flat-cam.html#Post2402051

Application is a 440 iron headed bracket race motor. Cam is an old Lunati grind that I planned on using with Comp 928 springs.


Ran those 928 springs on my 472 and 451 over the span of almost a decade using the same set of comp cam 821 tappets. Broke the cam in right using good break in oil for 30 minutes, always ran high ZDDP oils (Admax, Brad Penn, Rotella w/ STP addative), and never had an issue.

That said, I'll never go through the hassle of braking in a flat tappets cam again. I'd rather shell out the money for a mild hydraulic roller than go through that 30 minutes of anxiety again.

Last edited by A39Coronet; 11/04/19 06:12 PM.
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