Exhaust Muffler for 3.5in. Round Glasspack Performance Exhaust Muffler MagnaFlow 18145 holley Modern motor oils have changed

Modern motor oils have changed and no longer include the Zinc or ZDDP

6 V8 1977 - 1978 GMC G15 305/5 V8 1979 GMC G1500 400/6

Hoooker recommends using cast iron exhaust manifolds or old headers to break in new engines to avoid coating damage

Cheater Fuel Solenoid

Exhaust Muffler for 3.5in. Round Glasspack Performance Exhaust Muffler MagnaFlow 18145 holley Modern motor oils have changedOverview: MagnaFlow Glasspack mufflers feature a reversible straight through design and with single stage packing these mufflers bring back that classic deep glasspack sound. Interchange: Brand Interchange Part Number Application: Year Make Model Submodel Engine Size Universal Specs: Body Finish Aluminized Exhaust Tip Quantity 0 Series Glasspack Overall Length (In.) 30 Outlet Type Center Outlet Quantity 1 Muffler Type Glasspack Inlet Type Center Inlet