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#11
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Granted, the 1970 RAIII and 455 are close, but I believe the 455 had the edge. There weren't very many original road tests comparing the two, but from what I have:
1970 GTO Judge(RAIII), 4-speed, 3.55 posi, 14.77 @ 94.42 mph 1970 GTO (RAIII), 4-speed, 3.90 posi, 14.60 @ 99.55 mph 1970 GTO 455, Turbo 400, 13.98 @ 101.88 mph 1970 GTO 455, 4-speed, 3.31 non-posi, 15.0 @ 96.5 mph 1970 GTO 455, Turbo 400, 3.55 posi, 14.76 @ 95.94 mph The big difference here is that all 3 of the 455 cars tested had a/c, and the 455 car that ran 15.0 even had p/w and p/dl, and was a peg-legger. The 400 RAIII's tested were pretty standard, no a/c or other weight related problems. The 14.60 turned in by the 70 RAIII above was after an entire morning of tuning (the car ran consistent high 14's until then). Pontiac marketed the 1970 455 as a cruiser, not a 1/4 miler, but of the 455's that were tested, even with a/c and loaded up with options, still were comparable to the RAIII. Go figure, I forgot about the 68-1/2 RAII's. How embarrassing, one of my favorite powerplants too. Looks like I picked the wrong week to stop sniffing glue. ![]()
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