Crankshafts for Pontiac

part no. stroke mains balance rod journal notes price
104004250 4.250" 400 internal 2.200" uses big block chevy rod 278.67
104554210 4.210" 455 internal 2.249"   278.67
104554250 4.250" 455 internal 2.200" uses big block chevy rod 278.67