T&D Machine Shaft Mount Full Roller Rocker Arm - 1.70 Ratio - SR20 BRODIX Heads - Big Block Chevy Del West Engineering The new Z-20 Photochromatic Shield

The new Z-20 Photochromatic Shield smoothly transitions from clear to dark smoke (or vice versa) depending on the brightness of the track

Features:CNC machined billet aluminum housing and Dupont Rynite baseNo CARB Exemption Order NumberSupplied with Cap-A-Dapt and rotor (accepts MSD socket style caps)Must be used with an MSD Ignition ControlMechanical advance assembly can be locked out for crank trigger systemsNylon pads ensure smooth operation of the advance weightsAdvance weight pins are staked and tig welded to the plateAdvance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reductionPolished steel shaft is QPQ coated and guided by a sealed ball bearingMaintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm rangeEasy-to-adjust mechanical advance with supplied springs and stop bushings

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Constructed from 6061-T6 aluminum this solid bar stud girdle set for 3/8" stud Ford 289-302 and 351 Windsor ties rocker studs together to properly locate them

Street King

T&D Machine Shaft Mount Full Roller Rocker Arm - 1.70 Ratio - SR20 BRODIX Heads - Big Block Chevy Del West Engineering The new Z-20 Photochromatic ShieldProduct Description: Rocker Arm Shaft Mount 1. 70 Ratio Full Roller Aluminum Natural SR20 Brodix Heads Big Block Chevy 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 that unlike some