I rebuilt two of my engines side by side simultaneously 40 years ago.
70 RA III "12" heads
72 455 HO "7F6" heads
Both use identical parts as follows.
Melling SPC 8 or 3 (I can't remember the part number off the top of my head)
Ram Air 4 cam
Factory Ram Air 4 lifters (Try and find those today)
HO Specialties springs
I always used Pennzoil 10w30 oil until the Zinc was reduced or eliminated then always used Zinc additive with oil changes. Never any problems in 40 years.
NOW all the oil I see is 100% synthetic and made from natural gas. WTF?
I always used Pennzoil because it was always made from Pennsylvania grade crude oil. Not anymore-Not sure what I will do from here...Both cars still run fine though.
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1978 Black & Gold T/A [complete 70 Ram Air III (carb to pan) PQ and 12 bolt], fully loaded, deluxe, WS6, T-Top car - 1972 Formula 455HO Ram Air numbers matching Julep Green - 1971 T/A 455, 320 CFM Eheads, RP cam, Doug's headers, Fuel injection, TKX 5 Spd. 12 Bolt 3.73, 4 wheel disc. All A/C cars
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