Thread: Mystery 455 H.O. heads
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  #57  
Old 11-03-2025, 02:53 PM
73T/A 73T/A is offline
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Join Date: Jan 2005
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Quote:
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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