[Slapee]

Help decoding my Holley
3878261 EH
List 3310
681

 

[dyno jonn]

Built in 66 or 76, August first week. 780/750 cfm carb. Most likely a 66 built carb.

 

[Slapee]

Is it oem or over the counter

 

[dyno jonn]

OTC. Only factory application was 1965 SS396 Chevelle.

Originals had the date stamped on the other side from where the 3310 and long part number was.

 

[jeffschevelle]

OTC. Only factory application was 1965 SS396 Chevelle.

That is correct. Date code is 1st week of August, 1966. By then the main body, the throttle plate, and both bowls had changed from the original 65 castings, so there's no particular "Z16" value attached to it. But if you have the original bowls they are 66-67 only, so could be worth a little to someone who knows the difference versus the 68+ bowls (and cares).

Originals had the date stamped on the other side from where the 3310 and long part number was.

No, the date was on the same side as the part number and LIST number. It was just the EH that was on the other side on assembly line 3310 carbs.

 

[dyno jonn]

No, the date was on the same side as the part number and LIST number. It was just the EH that was on the other side on assembly line 3310 carbs.

I knew it was something like that. I lost a bunch of pictures I had saved when last computer crashed. Thanks for the correction.