Quote:
Originally Posted by Jack Gifford
No. Converting to screw-in studs is best done on a milling machine (or a rare jig-boring machine).
I haven't handled #47 heads- did the factory machine the tops of the stud bosses? If not, how did you machine them? The studs with integral jam nuts depend on the tops of the bosses being precisely flat, and square to the studs' centerlines.
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These heads came with factory guide plates installed on them.
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 Johnny US Army Retired
1978 T/A 463 Pontiac, KRE 74cc 300CFM D-ports, Howard's custom SFT, Nash Intake,QFT 950 E85 carb, TCI TH-350, 4200 converter 3.73 12 bolt [email protected]
1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car.
1972 LeMans 350 Pontiac H/S Drags project
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