I think they were allowed to enlarge them somewhat. They had a lot of neat powerplants. Including an Olds 455 w/FI. The Boss 429 engine was used for a short period as an all aluminum 494. Now...that was some racing.
Racing is right! Aluminum 494. Wow, I wonder what the difference in weight would of been between the aluminum and metal block?
Originally Posted by woodz428
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