Chevy Big Block Casting number help.

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**Furback** · #2 03-20-2013, 10:31 PM

I had crate LS7 and crate LS6 in the 70s, 4 bolt blocks with that casting number. Also, I have a 73 motor home 4 bolt block with this casting number. Actually, I threw away a CE 4 bolt block with this casting number, supposedly it was a Motion engine, the block had been froze and split the lifter galley all to shit. The heads off of this engine were stamped "Gioninni" or somthing like that. Rectangle port heads. It appeared to be a crate LS7 that had the heads prepared by "Gioninni". Tunnel with two 660 center squirters also.

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