Holley 3810 date code
Thread Starter
Melting Slicks
Joined: Aug 2010
Posts: 2,823
Likes: 484
From: El Dorado Hills CA
Holley 3810 date code
I've seen a 3810 Holley that has 0616 date code. I thought original 66 carbs did not have a 0 in front. I also thought they ended them in 1975 so it wouldn't be March 1976.
Any ideas?
Ed
Any ideas?
Ed
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,920
From: Washington Michigan
All Holleys through 1972 had 3-digit date codes (year, month, week of the month); all Holleys after 1972 had 4-digit Julian date codes (day of the year, year). Any Holley on a Corvette with a 4-digit date code is a later Service replacement. 
