Quote:
Originally Posted by Kenth
#62 heads is not and have never been RA III heads.
FWIW
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My brother rebuilt the original '69 400 RAIII engine out of a '69 Trans Am with a TH400 and A/C. It was a loaded TA with the original 3.23 Safe-t-track rear end. It had 62 heads and it's my understanding that any 400 4-bbl with A/C got the 62 heads regardless of use TA, GP, GTO, etc. The 62's had larger combustion chambers to lower the compression a tad. This engine ended up with close to 11.0 compression, the 068 cam, new forged Eagle rods and Ross pistons and made 425 hp/475 lb-ft on the dyno and ran 13-teens at 106 mph weighing just over 3900 lbs with the 3.23 gears...very impressive.
I'm certainly open to corrections if I'm mistaken.
Dennis