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View Full Version : ZZ4, GMPP # 12561723 partial engine


3dinter
07-29-2012, 12:16 PM
Would the old cast iron heads 487, 487x or 993 fit this block, Without any special machining and such ?
3dinter
08-10-2012, 10:46 AM
TTT to the TOP for answers
3dinter
09-01-2012, 04:35 PM
Anyone ???
ka_jd7and1
09-01-2012, 11:31 PM
That is a gen-1 block, so why wouldn't they work?
3dinter
09-04-2012, 08:44 AM
That is a gen-1 block, so why wouldn't they work?

i didnt know, that why i asked a question, since you are the only one answering i assume no one else knew the answer. How did you determine its a gen 1 block ?
ka_jd7and1
09-04-2012, 12:27 PM
You should be able to find a parts breakdown of the shortblock you're looking at that has casting numbers for all the parts.

If you can find the casting number of the block (should be 10243880 or 10105123 if I remember right), it is a Gen 1 block.