Proform Slant-Edge Tall Aluminum Valve Cover - Baffled - Breather Hole - Raised Chevrolet Bowtie Logo - Black - Small Block Chevy (Pair) 154-4102 12 AN Hose to 7/8 2 1 2 to M77MS829H30 1303LS1-3 Size:Youth 2X-Large

12 AN Hose to 7/8 in NPT Male O-Ring

Features:Designed for street/performance use with a mechanical and vacuum advanceMust be used with an MSD Ignition ControlSupplied with an HEI style distributor cap and rotor (accepts Cap-A-Dapts)O-ring seals can be added to modified blocks to improve oil pressure controlSpecial oil tract improves lubrication to the distributor and cam gearNylon pads ensure smooth operation of the advance weights┬ ¼Î“ÇáAdvance weight pins are staked and tig welded to the plateMechanical advance assembly can be locked out for crank trigger systemsAdvance 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 bearing┬ ¼Î“ÇáMaintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm rangeCNC machined billet aluminum housing and billet aluminum baseVacuum advance canister for improved economy (can be locked out)┬ ¼Î“ÇáEasy-to-adjust mechanical advance with supplied springs and stop bushingsCARB E

When the door is closed

40mm o-ring to o-ring length

For 4 Extra quarts

Proform Slant Edge Tall Aluminum Valve Cover Baffled Breather Hole Raised Chevrolet Bowtie Logo Black Small Block Chevy (Pair) 154 4102 12 AN Hose to 7 8 2 1 2 to M77MS829H30 1303LS1 3 Size:Youth 2X Large 12 AN Hose to 7 8 in NPT Male O Ring Features:Designed for street performance use with a mechanical and vacuum advanceMust be used with an MSD Ignition ControlSupplied with an HEI style distributor cap and rotor (accepts Cap A Dapts)O ring seals can be added to modified blocks to improve oil pressure controlSpecial oil tract improves lubrication to the distributor and cam gearNylon pads ensure smooth operation of the advance weights┬ ¼Î“ÇáAdvance weight pins are staked and tig welded to the plateMechanical advance assembly can be locked out for crank trigger systemsAdvance 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 bearing┬ ¼Î“ÇáMaintenance free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm rangeCNC machined billet aluminum housing and billet aluminum baseVacuum advance canister for improved economy (can be locked out)┬ ¼Î“ÇáEasy to adjust mechanical advance with supplied springs and stop bushingsCARB E