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Old 11-10-2011, 07:34 PM
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gmc1990rodder gmc1990rodder is offline
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Need help with suffix codes

This may be a stupid question, but i can't find out any info on my engines suffix codes. I've tried to just google and yahoo the numbers with no luck. And tried to find a site to help find more about my engine with no luck either.. It is a 400ci sbc , casting number is 3951511, and I found out the basics with this but wan to know more, the suffix numbers/codes on the front of the block are T0414CKP and another set is,12S251618.. thanks for any help in advance!!
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