BIG BLOCK CHEVY High Performance Cam Bearing / Brass Freeze Plug And HP Hardware Kit. 1 Dura Bond GMP-12LT COATED High Performance Cam Bearing Set . 1 - 2 7/32" Cam Plug. High Performance Cam Bearing Line For Racing Applications ; Fatigue Life Of The Bearing Is Nearly Doubled With Micro Babbitt, Chill Cast, And Burnished Construction.