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Which is better?

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Old May 17, 2002 | 12:21 PM
  #1  
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From: Hampton, Virginia
Which is better?

I have a set of 305 TPI HO heads that came off of a 1990 IROC. Are these heads Better, Same, or Worse than the stock heads that are on my 1986 305 TPI Trans Am?
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Old May 17, 2002 | 12:24 PM
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From: Orygun
Certainly not worth the pains of a head swap, if they're different I doubt they're different by more than 5-10hp
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Old May 17, 2002 | 02:14 PM
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THE HEADS ON THE 85 86 TPI 305 HO'S WERE THE BEST DO TO THE HIGHER COMPRESSION RATIO 9.5.1 COMPARED TO 9.3.1
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Old May 18, 2002 | 12:12 PM
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Thanks for the info.. after reading your response and looking up some more info, it does turn out that the heads that i currently have on my car are better.
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