I too scanned my 70-71 Mopar parts catalog and found these same anomolies. I would agree that all 383's in 1970 were HiPo 335 hp only if they share same 9.7 to 1 pistons & had the same part# 440HP cam/lifters, same 440HP valve springs. I'm surely reading the FSM wrong!
BTW - I quoted my Road Test magazine June 1970 article when posting 10.5 to 1 compression earlier - should have checked my FSM first.
Painting the engine blue or orange, what's the significance? Does A/C dictate or does Holley carb or does Tranny or a combo of above? Must be combo. Interesting topic. My engine is blue, has A/C, has Carter 4732S, has 727 auto, for the record, dual exhaust without cutouts and tips.
I will say a motor should have been stamped with HP or HP2 on its pad, maybe not all were stamped, mine surely isn't.
