MORE POWER - NEW REAR MAIN SEALS FOR CHEVY BIG BLOCK & SMALL BLOCK ENGINES
Customer dyno tests on these seals during 2011 have shown we have seals which really works.Engine power output    : Up by 12 HPTorque output              : Up by 10 - 12 lbs.ft.Vacuum retention        : Increased & wiorking at 25.0"HgOil Sealing                  : Leak free dynamically & staticallyCustomers like these seals & find them user-friendly & easy to assemble.Shaft wear is substantially reduced so keeping down the costs of engine re-builds.