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1 11504-R1
Test results are expected to vary +/- 2%
a 500cid LS based engine gained 26+ rear wheel horsepower
Other available variants include black anodized
Mechanical Roller Lifters - Small Block Chrysler (273-360) Pushrod Seat:On Center 1 11504-R1Small Block Chrysler . 904" Mechanical Roller Lifter Pro Plus 2000 Series Lifters Feature 4 column design for ultimate strength and rigidity while minimizing mass. Deep roller bearing pocket provides maximum roller bearing shrouding, maximizing rigidity and thrust surface area with smooth rounded edges that minimize lifter bore wear. Made in the USA. Triple Alloy Steel Billet Lifter Bodies machined on state of the art CNC equipment. Machined with one