Notice anything wrong here? (eBay auction)
 

Link

There's 2 semi-obvious issues and 2 dead give-aways.

Caveat Emptor

Re: Notice anything wrong here? (eBay auction)
 

The 3 on the stamping looks wierd...but I'm an idiot when it comes to these things... https://www.yenko.net/ubbthreads/imag...ins/tongue.gif

Re: Notice anything wrong here? (eBay auction)
 

The electric choke?

Re: Notice anything wrong here? (eBay auction)
 

is the plastic device on the side of the carb for automatic applications ... https://www.yenko.net/ubbthreads/imag...s/confused.gif

Re: Notice anything wrong here? (eBay auction)
 

The 2 semi-obvious issues are that it has an incorrect baseplate and the wrong float bowls on it...obviously minor issues, but there's still 2 red flags.

Re: Notice anything wrong here? (eBay auction)
 

the Date Code 453, does not the first number meen the year ? would that not meen 74 ?

Re: Notice anything wrong here? (eBay auction)
 

Josh

You're on the right track, but not quite.

The "original" 3310 is for a 1965 vehicle. A date of 453 would be the 3rd week of May 196<u>4</u>...a bit early for a 1965.

The second red flag has to do with the main body casting itself.

Re: Notice anything wrong here? (eBay auction)
 

Here is a real 1965 dated 3310

Look closely, you should spot the differences quickly.

Re: Notice anything wrong here? (eBay auction)
 

The EH prefix was originally on the passenger side of the airhorn,and it should have the smaller fuel inlet bowls,as is in Craigs auction.
https://www.yenko.net/attachments/200370-carbguy.jpg

Re: Notice anything wrong here? (eBay auction)
 

Rick;

Correct. There's one other thing as well...notice the vertical casting ridge on the front corners of the choke tower in auction #1? Notice they're not there on the real `65 carb.

I posted this soleley for the purpose of trying to keep someone from getting burned, be it intentional or UNintentional. For all I know, the person selling the 1st carb could simply be mis-informed...it's happened before. (For the record, I am not accusing them of any intentional deception or anything of the sort.)

I almost hesitated to post this in the fear that publicly bringing to light some of the differences between the 2 items might make it that much easier for someone to fake the next one.

I decided that posting this would be "the lesser of two evils", so-to-speak.

I am at the end of my rope with dishonest people right now, having just been scammed myself (had nothing to do with anyone here).

I know there are people out there who will likely read this (they shall remain nameless) who won't likely appreciate me posting the above info, but I wouldn't be able to sleep at night if I'd kept quiet about this and someone got nailed on it.

I'm just trying to keep someone from getting burned. If that pisses someone off or makes me a bad guy in their eyes, then I guess I'll just have to live with that.

Eric

Re: Notice anything wrong here? (eBay auction)
 

For what these parts are selling for today,I for one am glad you brought these details up.
When did this Vertical casting ridge first appear on assembly line carburetors?
Pic from auction #1.
https://www.yenko.net/attachments/200373-carbguy1.jpg

Re: Notice anything wrong here? (eBay auction)
 

Rick;

I'm not 100% certain exactly when the casting ridge appeared on the 3310 carbs. I've seen 1967 dated 3310's that had the ridges, but I've not seen any 1966 dated ones to compare with.

Re: Notice anything wrong here? (eBay auction)
 

HI WHAT IS THIS CARB OFF

Re: Notice anything wrong here? (eBay auction)
 

Rick and Eric:
The change from the smooth choke horn to the vertical rib version was sometime in '66. I've never seen nor heard of a real 65 3310 with a date earlier than 1965.

The carb pictured with the "4" date is just one a a zillion service replacement over-the-counter 3310s and is, of course, 1974 dated.
https://www.yenko.net/ubbthreads/imag...s/rolleyes.gif

I don't know that it is an intentional fake as it has the later float bowls (the unique to 65,66 3310, 3130 and 3124s small inlet bowls have been reproduced). Anyone willing to pay a couple grand for a real, early 3310, etc., knows this isn't it.......(I hope!). Thanks, Eric, for pointing it out!
Dave

Re: Notice anything wrong here? (eBay auction)
 

"The carb pictured with the "4" date is just one a a zillion service replacement over-the-counter 3310s and is, of course, 1974 dated."

I agree about the 453 date being to early for an assembly line Z-16,but I thought they stopped using the three digit date code system after Dec. 1972.
Making this a 1964 model year date,if indeed authentic.. https://www.yenko.net/ubbthreads/imag...mlins/hmmm.gif

Re: Notice anything wrong here? (eBay auction)
 

Dave;

Here is a 733 dated 3310 that does not have the vertical ribs. I *believe* I've seen late `67 dated ones that had the ribs, but I wouldn't say with 100% certainty at this point.

At least now we know that the rib apparently still wasn't present on early `67 dated carbs.

As far as being `74 dated, AFAIK all Holley's after sometime around 1972 went to the 4-digit Julian dating system, so it would *appear* that someone's either fudged those #'s, or it's a pretty unique mis-stamp. (treading cautuiously with my statements here)

Just trying to do my job and keep someone from getting stuck with something that's not quite what they thought it was.

Eric

Re: Notice anything wrong here? (eBay auction)
 

I don't know the story behind these holley 3310 "EH" carbs but it makes me wonder because the first time I found one at a swap meet I nearly fell over(I'm not confusing it with the holley"3310/780 cfm" over the counter aftermarket carb).Since then I've found 2 or 3 of them and seen several on ebay.They only made 201 Z16's,where did all these "EH" GM carbs come from?

Re: Notice anything wrong here? (eBay auction)
 

Steve;

The EH 3310 is the grand-daddy of the modern 3310, and was caried out as a "service carb" for many years after the Z16 Chevelles ceased production before being "refined" into the more common 3310's we're so familiar with today.

Over the years, Holley has made about a bazillion of them...fact is, they're one of the best, most versatile carbs Holley ever produced. The current versions available today are (IMO) a less appealing version with their secondary metering plate and straight leg boosters.

FWIW, other OEM carbs have made their way to the speed shop counters simply because they worked so well and were so versatile. The 1850 is another example.

Eric

Re: Notice anything wrong here? (eBay auction)
 

Oops, forgot about the date code difference. That made the explanation too easy, I guess. IF some funny business happened with that date, he chose the wrong year and month. May of 64 IS a problem.
Looks like you have the style change date pinned down better the me, Eric. Are you keeping a file of photos, I hope?