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PY Online Forums - Bringing the Pontiac Hobby Together > General Classic PONTIAC TECH > Pontiac - Street > Mystery 455 H.O. heads
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Old 11-03-2025, 02:53 PM
73T/A 73T/A is offline
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Join Date: Jan 2005
Posts: 207
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Originally Posted by johnta1 View Post
Here's a sheet that SDBob has explaining the dyno tests they did back in 1971.
That’s very interesting.I never seen that one.👍

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2001 Trans Am,WS6 Sunset Orange Metallic (sold)
1973 Trans Am 455,4speed
1970 GTO
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