T&D Machine SportComp Shaft Mount Full Roller Rocker Arm - 1.75 Ratio - On Shaft - Big Block Chevy 15-NEC-N-J Valve Opens Fully at 1

Valve Opens Fully at 1 PSI (Note: blowing through it will only partially release the hinge)

1966-1971 Mercury Comet

Left Side Upper Kick Panel

Compatible With Other Aftermarket UpgradesJet Performance Products is a proven leader in automotive tuning technology

T&D Machine SportComp Shaft Mount Full Roller Rocker Arm - 1.75 Ratio - On Shaft - Big Block Chevy 15-NEC-N-J Valve Opens Fully at 1Product Description: Rocker Arm SportComp Shaft Mount 1. 75 Ratio Full Roller On Shaft Aluminum Natural Big Block Chevy Sold Individually T&D manufactures rocker arm systems for over 400 cylinder heads and its products have established a reputation for the highest levels of quality, performance and long term reliability. The company works closely with leading engine builders to maintain its position at the forefront of technology. Add to this the fact