It is a trick that is usually reserved for stock class guys and rules limited classes etc--yes...with reduced radial tension the engine will make another few HP depending on the combo but really...the way to go if you need that extra few is a modern thin ring package--rings will cost alot more--pistons too, and for what? A very small percentage increase? If you really need to be set on "Kill" then do it but a shelf stock piston with 1/16th rings is way cheaper, DEPENDABLE, and will make plenty o power. I use the thin packages on circle track limited engines that need EVERY HP we can get but for a fast drag car it is just extra $$$ out of customers pocket IMO. Most folks are better off to forget about the "tricks" and just concentrate on excellent machine work, a GREAT valve job, and a well tuned distributor (crank triggers are the BEST thing ever invented)