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Old 10-19-2003, 09:48 AM
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Question Does anybody know GM casting #'s?

I just got the casting #'s off my BBC heads. I bought this off a guy who builds BBC's for a living and I was wondering if anyone could tell me what year or type of BBC this is.

I got these #'s off the L head under the valve cover starting from the fire wall forward....

278 (or 2.78)
GM12T
336781

I probably need the castings off the bock right?
if so where can i find them?

thanks

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Old 10-19-2003, 09:57 AM
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Check www.nastyz28.com or www.mortec.com

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Old 10-19-2003, 11:05 AM
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or www.google.com

336781 heads
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Old 10-19-2003, 11:27 AM
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strange bedfellows

There is a very good website that can help you out-run by a group whose hobby is just numbers. Check out the American Automobile Casting Numbers Club as www.aacncclub.com
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Old 10-19-2003, 12:33 PM
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thanks
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Old 10-20-2003, 12:31 AM
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73-85 oval open 454 118cc chamber, 256/114 cc ports
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Old 10-20-2003, 05:54 PM
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is that good?
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