Quote:
Originally Posted by Stingr69
You guys may be right, I have taken liberties with the name "Boss" - My Bad.
As for the 289 part - I believe they were racing overbored engines. The limit was 5.0 Liter and they bored them oversize to get to the max displacement (around 305 cubic inches). I have seen the Chevy pistons for that so I am assuming the Mustangs were doing this as well.
-Mark.
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Go back and read your TransAm history, '66/'67 the Mustangs were indeed running 289cid engines. There was no "around", 305cid was the maximum allowed under TransAm rules, indeed Chevy could have bored out 283 blocks to achieve that just as Ford could do so with the 289. What Chevy did was put a 283 crank in a 327 block which works out to 302cid, call it a bored out 283 or a destroked 327, it was a 302. Ford followed suit and developed a 302 engine for the Mustang.
Clyde