The crank was the same between the two motors. There was the S rod motor a very heavy beefy rod, but shorter that the standard 429/460 rod. There was also two styles of boss head; the full hemi chamber (for superspeedways) and the squished chamber.( for the short tracks).
The full hemi was run all tracks at one time, the last time I checked the SK book there wer 28 different NASCAR heads the Boss 429 street had orings in heads NASCAR had orings in block decks
Quote:
Originally Posted by k.pascoe
The crank was the same between the two motors. There was the S rod motor a very heavy beefy rod, but shorter that the standard 429/460 rod. There was also two styles of boss head; the full hemi chamber (for superspeedways) and the squished chamber.( for the short tracks).
BTW -The 1971 police motor was a 429 CJ.
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