Originally Posted By Cab_Burge
Which block are you building? The 1009 was designed for the smaller bore 426,383,(4.250 size)413 and 361 blocks(4.180), not for the larger 4.320 440 bores scope
I bought the 1009 for the 413 truck block build with the bore at 4.250 I'm assembling now with 440 source heads, they barely fit properly on it shruggy


It's a 400 block.