BTR Crank Gear - Aftermarket GEN III/IV LS Crankshaft in Oem GEN V Block - Chamfered End and I.d. Grind

Designed by BTR to clear the larger crankshaft snout fillet radius and fit onto the I.D. of snout on an aftermarket GenIII/IV crankshafts when installed into an OEM Gen V block.