so I couldn't help myself and had to go check. Turns out the rear stud could hold 35 ft/lbs but the front just ate all the threads out so yay now I've screwed these threads. Gonna hope I have enough metal to tap it to a 7/16 that I can put an insert into.
69 Buick Special Deluxe. Intercooled Turbo Chevy 250 @ 15psi on a stock long block. It's kinda fast.