Thread: 010,020 casting marks?
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01-11-2005 02:32 PM #1
010,020 casting marks?
Some blocks have a "010" above a "020" under the timing chain cover, I understand that to make the block more desirable over one without these casting marks, is that true? If so, Why?
I was told it represented 1%zinc and 2%nickle added to the block during the casting process.
Thanks,
LOST
Some blocks meaning Chevy small blocks.
Thanks
Last edited by lost; 01-11-2005 at 04:11 PM.
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01-11-2005 05:50 PM #2
Lost- the high nickel content is what you want if you plan to twist the RPM's up.....although I guess you'd have to be in the John Force range to have to worry about that anymore as most cams won't allow you to get above 7k anymore.
I don't know anyone running any Chevy's on the street that can bust a block from twist that isn't sporting a blower.Jim
well I decided to do another mod to gain max travel of bars past the intended travel points just for that peace of mind. 1/8 inch is to close so now I'll have 1/2" or better. I cut a 3/16" wall...
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