the lugs are different for a 7/16" bolt street hemi converter than a 5/16" bolt 383 converter. pretty sure a 383 4bbl converter, other than lugs, is the same as a street hemi. the street hemi 7/16" lug is fatter were the threaded bolt hole is vs the 5/16".
Re: Stock converter 1967 426 hemi. Find it Where? - 01/16/1912:46 AM
The machining you show isn't for a factory Hemi converter which has the same bowl as any other 10 3/4" converter. Only for the 10" and smaller require pump cover machining.
Re: Stock converter 1967 426 hemi. Find it Where? - 01/16/1903:07 AM
I know some have said the clearance issue is on the opposite side of the converter. I have heard the crank side of the converter is clearanced more for the 8 bolt crankshaft mounting. You can do it but need to use thin headed bolts or there is interferance. No experience here, just what I read on here.
how thin are the heads ? would grade 8 bolts be ok to machine down the heads ? if so, a thickness dimension would be great to have ! got tons of regular grade 8 bolts in stock. TIA
thanks for the link, but the last part contained a follow up link to a pic [i think that would show the bolt head thickness] that was not available due to the "file being empty". most likely because the post was from 2010.