Holley 3245 Numbers etc.

red67 · #1 11-26-2018, 09:17 PM

I have two Holley List 3245 carburetors that I have had for years sitting around. Both are what I would call very nice originals with all original parts and very nice plating finish etc.

One of the carburetors is dated 5B1 and the other is 831. I'm assuming that the 5B1 carburetor is an assembly line carburetor, although it seems quite early, and the 831 is a service replacement. The number stampings on the airhorn are quite different for these carburetors in form etc. Any comments about these differences by experts here?

Pictures below. I can upload better or more pictures if anyone would like to see them.

**Kurt S** · #2 11-27-2018, 04:16 AM

I had to look it up - these are 66 L79 carbs.

red67 · #3 11-27-2018, 08:49 PM

Thanks Kurt

I do know they are 1966 L79 Nova carburetors.

What I am mainly concerned about is the form of the number stampings and the early date for the 5B1 carburetor. The form of the stampings is quite different. The 5B1 looks like it is hand stamped and there is what looks like an over stamp at the and of the list number like it was the wrong suffix. Although, I have seen pictures of other 3245 carburetors with the same date and they have the same X or star on the end of the list number. I have also seen versions as early as 5A. This seems really early for the 1966 model year. Is this normal?

The 831 looks like it has been machine stamped. I've also seen pictures of other 3245 carburetors with the 831 date. Seems like Holley ran the carburetors in batches on certain dates. Is this normal?

The other thing is that the 5B1 does not have the DC suffix in the GM part number. The other 5A and 5B carburetors I have seen also don't have the DC suffix. Is this normal for assembly line carburetors then?

**clnovaparts** · #4 11-28-2018, 02:56 AM

Regarding the 1968 service dated 3245. Are the metering blocks and and baseplate marked with 3245 as the later service dated 3245 holley's from the 70's are?

red67 · #5 11-28-2018, 03:58 AM

No 3245 on the metering blocks or baseplate of the 831. I have seen pictures of this and looked specifically. Looks just like the 5B1.