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G3GM 1973 to 1977 A-bodys. Chevelles, Monte Carlos, El Caminos, Laguna, 442, Cutlass, Malibu, GTO, LeMans, Century, Regal, Grand Am, Grand Prix, Sprint, Gran Sport, Can Am, Hurst-olds, and other 73-77 A-bodies


engine casting number question

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engine casting number question Empty engine casting number question

Post by dade1989 Tue Jan 08, 2013 5:48 pm

Does eny1 know wat the letter on top of the casting number stand for
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engine casting number question Empty Re: engine casting number question

Post by 77mali Tue Jan 08, 2013 6:45 pm

Is it just a single letter or is there another set of numbers after that too? I have a late 80's block the casting number is on the L side of the block & there is a smaller "lettered" date code that's a bit smaller & harder to read but near it. Think it's opposite on 73-77 small blocks (Chevy anyway). Post a pic if you can that should clear it up more.
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Post by dade1989 Tue Jan 08, 2013 9:07 pm

I can't get a picture cuz the engine is still in the car but its just one big M on to of the casting number

Ill try to stick my phone down there tomorrow and try to get a picture
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engine casting number question Empty Re: engine casting number question

Post by 77mali Tue Jan 08, 2013 9:25 pm

I'm not all that familiar w/ older blocks. This is near my casting number.
engine casting number question P1030310
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