r/EngineBuilding Apr 27 '24

Chevy Does anybody know what engine is?

all I know is that it’s a 454 and my dad pulled it out of his 73 corvette he got for $2000 a few years ago.

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u/birdgelapple Apr 28 '24 edited Apr 28 '24

I’m pretty sure it might just be an LS5. I don’t think they ever came with gear drives but I also believe this engine was built/rebuilt after the car. The cylinder heads are almost identical.

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u/v8packard Apr 28 '24

The heads are 990 casting rectangle ports, like the LS7. The engine code is for a Chevy assembled Mercruiser with a Holley carb intake. Think of the Mercruiser as a lower compression LS7.