727 converter

i bought a 67 cuda with a 318, wanted to change the 4 speed to an automatic (727). had a tranny and converter built. went to put the tranny in and the converter pilot did not fit into the crank. the 318 turned out to be a bad motor anyway so i bought a crate 360. redid the converter for correct stall speed and correct flex plate. I find myself in the same spot , the converter pilot will not fit into the crankshaft. the crankshaft is 1.7970, the converter 1.8120. WTF!!!!!!!!!!!!!!!
Author: admin