Thread: 305 pushin 480HP?
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10-06-2008 07:08 PM #11
I accually found out that 010 = 1% tin and 020 = 2% nickel. I have a 3970010 and the numbers 010 under and to the right of the timing chain cover indicate that it contains 10% tin that makes for a good casting as it allows the metal to flow adaquately and the nickel adds strength. I just recieved this information from a trustworthy source. Thanks for the craigs listing I'll check on that tommarow. Will I have to have work done on the lifter cyinders if I decide on a roller cam?Last edited by like2gofast; 10-06-2008 at 07:12 PM.





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