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GMC V6 and V12 Engines Engine repair and rebuilding

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  #1  
Old February 22nd, 2020, 06:43 PM
Palimino Palimino is offline
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Default Any idea what year this engine is?

I found a 351C supposed to be a 1966 , #351C 013554 anyone got some help? Thnx
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Old February 22nd, 2020, 08:41 PM
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Default Re: Any idea what year this engine is?

The cast parts should have date codes. Jolly data is slim on 351C.
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Old February 23rd, 2020, 02:15 AM
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Default Re: Any idea what year this engine is?

Quote:
Originally Posted by Palimino View Post
I found a 351C supposed to be a 1966 , #351C 013554 anyone got some help? Thnx
My Dad had a new 351C installed in his one ton Suburban which I have now, before he even took delivery of it in 1965. The engine number is 032399. Since yours is a lower number, I would guess it's older than mine.

The only other one I could find in Jolly's lists was a 1961 truck with 351C number 011332 which is a lot closer to your number. Taking a wild guess here, your 351C could be from a 1962 truck.
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Last edited by Ed Snyder; February 23rd, 2020 at 02:22 AM. Reason: added info
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Old February 23rd, 2020, 02:56 PM
Palimino Palimino is offline
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Default Re: Any idea what year this engine is?

Thnx all for the info, the engine was sitting outside of a '66 commercial rig when I picked it up, the main reason I am questioning the year is if I replace the timing chain/gears, there is a difference in part numbers/chain length starting in '66, found lots of numbers cast into heads/block but nothing with a specific year tied to them.
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Old February 24th, 2020, 01:19 AM
Palimino Palimino is offline
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Default Re: Any idea what year this engine is?

Finally found a date on the intake manifold of 1-25-65?
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