60mm Stroke Crankshaft for Small Block GX Clone

The final word in small block stroker builds! For serious engine builders only! Forged steel 60mm stroke crankshaft for the GX200 and clone engines. This crankshaft will require clearancing of the block and camshaft. Rod Journal Diameter: 1.181"/30mm (GX200/Clone) Flywheel Taper: GX200/Clone Displacement: 70mm bore = 231cc 72mm bore = 244cc 76mm bore = 272cc Here are some rotating assembly combinations that you can build with our cranks and our 72mm bore 136.8mm deck height TC225 block: STACKUP w/ rod and piston BORE X STROKE DISPLACEMENT PISTON CROWN DISTANCE TO DECK AT TDC Rod/Stroke Ratio Use 72mm "550" - 0.906" CH flat top piston 54mm Crank + ARC 6771 - 3.403" 72mm x 54mm 220cc 0.014" under the deck 1.60:1 55mm Crank + ARC 6771 - 3.403" 72mm x 55mm  224cc 0.005" above the deck 1.56:1 58mm Crank + ARC 6271 - 3.323" 72mm x 58mm 236cc 0.015" under the deck 1.46:1 58mm Crank + ARC 6266 - 3.343" 72mm x 58mm 236cc 0.004" above the deck 1.46:1 59mm Crank + ARC 6269 - 3.313" 72mm x 59mm 240cc 0.003" under the deck 1.42:1 59mm Crank + ARC 6271 - 3.323" 72mm x 59mm 240cc 0.013" above the deck 1.42:1 60mm Crank + ARC 6270 - 3.303" 72mm x 60mm 245cc 0.005" above the deck 1.40:1 60mm Crank + ARC 6269 - 3.313" 72mm x 60mm  245cc 0.015" above the deck 1.40:1 Use Wiseco 17-2835XC 0.640"CH 3 ring piston 58mm Crank + ARC 6234 - 3.595" 72mm x 58mm 236cc 0.007" under the deck  1.57:1 59mm Crank + ARC 6234 - 3.595" 72mm x 59mm 240cc 0.013" above the deck 1.54:1 Use Wiseco 11132P273 0.640"CH 2 ring piston 54mm Crank + ARC 6268 - 3.707" 72mm x 54mm 220cc 0.024" above deck (cut the piston crown) 1.74:1 55mm Crank + ARC 6268 - 3.707" 72mm x 55mm 224cc 0.044" above deck (cut the piston crown) 1.71:1 60mm Crank + ARC 6234 - 3.595" 72mm x 60mm 245cc 0.030" above the deck (cut the piston crown)  1.52:1 **Always maintain a minimum of 0.030" clearance between the bottom of the head and the top of the piston using the correct thickness head gasket** Common Block Deck Heights BBC 70mm tall deck block deck height is 138.6mm BBC 72mm bore TC225 block deck height is 136.8mm Predator 224 block deck height is 136.5mm Tillotson racing block deck height is 135.5mm Predator 212 non-hemi deck height is 135.5mm Predator 212 hemi block deck height is 135mm Available ARC GX200 Clone rods  1.181" main journal X .709" wrist pin (550 flat top piston) 6267 3.283" 6734 3.293" 6270 3.303" 6269 3.313" 6271 3.323" 6266 3.343" 6270 3.383" 6271 3.403" 1.181" main journal x .490" wrist pin (.640CH pistons) 6234 3.595" 6268 3.707"