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L76 block with 243 heads?

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Old Nov 14, 2015 | 01:45 PM
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Default L76 block with 243 heads?

Looking at purchasing an engine. The engine is not close enough to look at without going there with the intent to buy. So I have lots of pictures.

The casting numbers aren't conclusive though. The block number is 12577461 but the heads are 243's. The valley pan shows that it has DOD/AFM. Has a truck oil pan and water pump.

What am I to make of this?

Thanks

Last edited by flyin; Nov 14, 2015 at 02:46 PM.
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Old Nov 14, 2015 | 02:46 PM
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Info added
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Old Nov 19, 2015 | 12:00 AM
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That is the casting number for an L76 block. I wouldn't think those heads were on it from the factory.
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Old Nov 22, 2015 | 08:59 AM
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I had the same thing but 799 truck heads.

Replace the oil pan and accessory drive, delete the dod and vvt, and you have an aluminum block LS2.

Depending on the price, you might be better off buying an Ls2. Theres long block L92 (truck Ls3) pull outs on CL for 2500 around me. I would had spent the extra 900$ for the cubes and converted that.

Last edited by Coda634; Nov 22, 2015 at 09:07 AM.
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Old Nov 22, 2015 | 07:28 PM
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Originally Posted by LS1MCSS
That is the casting number for an L76 block. I wouldn't think those heads were on it from the factory.



Also my l76 6.0l pontiac g8 has the same .
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Old Nov 23, 2015 | 01:07 PM
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Originally Posted by corvette c6 zo6
Also my l76 6.0l pontiac g8 has the same .
Hmmm. Yeah that's not right. My 09 g8 gt has ls3/l92 rectangle port heads stock, that's what they come with.
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Old Nov 23, 2015 | 01:10 PM
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The L6 has the LS3 style heads and intake on it from the factory. Sounds like somebody just put a bunch of spare parts together.
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Old Nov 23, 2015 | 01:10 PM
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The L76^^
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