Engine Date Code 1977 c3
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2nd Gear
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Engine Date Code 1977 c3
I have a 1977 L48 Automatic trans. The books say only engine date code 3970010 was used for 1977 corvettes. I have date code 3970014, and yes the numbers on the front pad match my VIN. It is a CLA with date code 3970014.
Wondering if someone can help me understand the discrepancy and tell me if it is a 2 or 4 bolt engine. Thanks
Wondering if someone can help me understand the discrepancy and tell me if it is a 2 or 4 bolt engine. Thanks
Race Director
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That 6 digit number is not a date code. CLA would be a 2 bolt.
•Also cast into the top rear of the block is a four-symbol code indicating when the engine was built ◦The first letter of the date code shows the month the block was cast
◦The one or two numbers shows the month
◦The last digit shows the year
•Also cast into the top rear of the block is a four-symbol code indicating when the engine was built ◦The first letter of the date code shows the month the block was cast
◦The one or two numbers shows the month
◦The last digit shows the year
Drifting
Joined: Oct 2005
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From: Forth Worth TX
3970010 & 3970014 are the casting codes for a Chevy 350 block, but there are others as well. Millions have been made.
You should see some letters/numbers on the engine stamp pad next to the CLA. (example V0127CTJ)
V-Flint, 0127 - Jan. 27th
This is an axample of a 1970.
You should see some letters/numbers on the engine stamp pad next to the CLA. (example V0127CTJ)
V-Flint, 0127 - Jan. 27th
This is an axample of a 1970.
Last edited by Revi; Sep 30, 2014 at 03:18 PM.
Team Owner
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From: Southbound
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2nd Gear
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Thanks for all of that info. Excellent information. It looks I have V0825CLA.
My mistake in calling the casting code the date code, but at least I now know the engine assembly date and that CLA is a 2-bolt main engine...how do you know CLA is a 2 bolt?
Again, thanks for the replies and information.
My mistake in calling the casting code the date code, but at least I now know the engine assembly date and that CLA is a 2-bolt main engine...how do you know CLA is a 2 bolt?
Again, thanks for the replies and information.
