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Old Aug 9, 2018 | 04:11 PM
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Hello All,

I have a 80' C3 I just bought and it came with what I was told is an older vette engine. I need a little Help identifying what year vette it came from. I think you guys are the ones to ask... I can take photos as needed, the engine is Orange so I believe that's pre-76, the engine has a code stamped on the intake manifold, I will check what it is after work... I believe it is G47... or GM47, ill take a look!

Any help would be great,

Thank you,
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Old Aug 9, 2018 | 04:12 PM
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Old Aug 9, 2018 | 04:19 PM
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Check the engine ID stamp on the pad at the front of the block. It's directly under the heater hose in your pic. There should be two stamps on the pad. Jot down both.
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Old Aug 9, 2018 | 04:36 PM
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Old Aug 10, 2018 | 05:50 PM
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Hi guys, thanks for the quick reply. I don't see any pad here, do I need to pull the valve cover?
The manifold has a stamp G185
Thanks!
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Old Aug 10, 2018 | 05:52 PM
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Old Aug 10, 2018 | 06:09 PM
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AH! hiding I see it.

C7u117492
V0920TYU
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Old Aug 10, 2018 | 06:09 PM
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The flat pad between water pump and head. Try carb cleaner or acetone to take paint off. In last shot, it looks like no numbers. If engine was rebuilt and head surface cut, the numbers will be gone.

Last edited by derekderek; Aug 10, 2018 at 06:10 PM.
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Old Aug 10, 2018 | 09:27 PM
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The derivative VIN looks to be from a Chevrolet truck which is supported by the TYU broadcast code. It is a 75 350/ 165 HP motor from a van or bus.
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Old Aug 10, 2018 | 10:14 PM
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Originally Posted by sullyman56
The derivative VIN looks to be from a Chevrolet truck which is supported by the TYU broadcast code. It is a 75 350/ 165 HP motor from a van or bus.
thanks for the reply!
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