quench article

Big Block
We developed those pistons (if you are using the pop up ones) with TMS propane performance and Speed-O-Motve- lots of dyno time (which kb piston?)
great combination
also really lowers EGT with proper (low overlap) cam selection
works even better on 440 which has a much worse spark plug location (like trying to ignite a pancake from the side) 413 truck motor was much better
(TMS saw 800 degree reduction on 440 propane buses for City of San Jose and others)(just piston and cam)