[C2] Questions/help? With a date code

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Mar 23, 2024 | 12:50 AM

lo63split

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6th Gear

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Questions/help? With a date code

I cannot figure out this date code. It looks like E 31 7 but is that may 31 1967 Any help would be greatly appreciate it.

Mar 23, 2024 | 07:38 AM

gbvette62

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From: Shamong, NJ

May 31 67 would be my guess. Of course it could also be 57 or 77, the casting number would help determine the year.

Mar 23, 2024 | 10:26 AM

kenba

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From: PHOENIX AZ. WHAT A MAN WON"T SPEND TO GIVE HIS ASS A RIDE

MAY 31 any year that ended in 7

Apr 3, 2024 | 07:45 PM

lo63split

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Thanks both for your help. Still trying to familiarize myself with this site

It’s a 3904351 67 4 bolt main.

thanks again

Apr 3, 2024 | 09:09 PM

gbvette62

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From: Shamong, NJ

Quote:

Originally Posted by lo63split

Thanks both for your help. Still trying to familiarize myself with this site

It’s a 3904351 67 4 bolt main.

thanks again

The "351" block came in both 2 and 4 bolt configurations, depending on the horsepower. Solid lifter engines (L-71 , L-89, L-88) got 4 bolt mains, hydraulic lifter engines (L-36, L-68) got 2 bolt mains.

Apr 8, 2024 | 10:40 PM

lo63split

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I see. I need to get this pan off then

Apr 9, 2024 | 12:01 AM

barkingrats

1967 Pedal Car Champion

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From: US-PNW

Quote:

Originally Posted by gbvette62

Quote:

Originally Posted by lo63split

I see. I need to get this pan off then

4-bolt blocks had a functional oil cooler passage while 2-bolts did not. Unless you have to anyway, before pulling the pan investigate the following detail from John Hinckley:

Quote:

Originally Posted by JohnZ

The photo above is correct for the 4-bolt blocks - leaves the middle hole available for an oil cooler connection, which is why it's there. On a 2-bolt block, the forward hole isn't drilled, so the drilled oil pressure tap is the hole immediately above the center of the oil filter canister (same hole used for the oil cooler on a 4-bolt block, but smaller). Photo of 2-bolt block below.