I HAVE A USED BALANCED SMALL BLOCK CHEVY 377 ROTATING ASM. CONSISTS OF FORGED TRW 7031P .030 PISTONS RECONDITIONED 5.7 GM X RODS AND A 1182 FORGED STEEL CRANKSHAFT ALL BALANCED TOGETHER AS A ASM. YOU USE THIS ASM IN A 400 BLOCK WHICH DE-STROKES IT TO 377 CU IN. THIS IS BASICALLY FOR A RACE APPLICATION DEPENDING ON CYLINDER HEADS 64 CC WOULD BE APPROXIMATELY 12.5 TO 1 COMPRESSION . $950.00 FOR THE WHOLE ASSEMBLY I DO NOT WANT TO SEPARATE IT. #31