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Old May 23, 2010 | 08:43 PM
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Default Engine ID Hepl
Hello

Now that the engine is out of the 66 Coupe can someone help with decoding the numbers Please

GM 385174

Front Pad 6120592 FO22HT

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Bill
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Old May 23, 2010 | 08:51 PM
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I assume it's 3858174, which would be 64-67 327, and HT is the code for 327-350hp. Original engine to the car?
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Old May 23, 2010 | 09:37 PM
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Default 1966 engine code
Hi Bill
There should be one more number in the engine assembly date. That's the F022HT number you posted. Could it be F0422HT. In the example I provided it would be F=Flint, 04=April, 22=day of the month and HT=code for 323/350HP
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Page Campbell
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Old May 24, 2010 | 07:22 AM
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The 6120592 is the serial number. The 6 is the year 66. It would be the 20,592 built in 66.
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Old May 24, 2010 | 08:42 AM
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Wow this is the best place to get the correct information regarding the Corvette marque

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Old May 24, 2010 | 10:41 AM
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Originally Posted by snydes
I assume it's 3858174, which would be 64-67 327
The 3858174 block was only used in '66 in Corvettes.
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Old May 24, 2010 | 08:53 PM
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Originally Posted by JohnZ
The 3858174 block was only used in '66 in Corvettes.
Just did a quick check on Mortec's website and thats what it said, perhaps used in other models in earlier years??
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Old May 25, 2010 | 01:30 PM
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Originally Posted by snydes
Just did a quick check on Mortec's website and thats what it said, perhaps used in other models in earlier years??
The 8174 block had lots of other applications from '64-'67 in Chevelle, passenger, Camaro, and trucks, but was only used in Corvettes in '66.
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