3810 Holley Judged Points

[Justin N.]

Dear Members,

I have a 'Service Replacement' 3810 for my 67 327 coupe. My car is an early Dec. 19th 1966 built car, but the carb says "221" for a date.

How many points are awarded for a correct carb out of 4500? How many will I get smacked for the wrong date? It is a total of 4500, right?

Thanks much!

Justin #41362

[Gerard F.]

Re: 3810 Holley Judged Points

Justin,

Nice to see you back on the forum, where have you been. The total points on the carb are 40 on originality and 20 on condition,total 60. Your carb by the date code is a 72 replacement (you sure it isn't 721). It looks nice with the slotted fuel bowl screws. I'm not a judge, but I think that the judges would be light on the deduction considering the vintage and condition.

Jerry Fuccillo
#42179

[Richard J.]

Re: 3810 Holley Judged Points

Hi, I had my 1967 390 car judged with a 1969 service replacement 3811. The carburetor was correct in every way but the date and I lost 10% for originality and got zero deductions for condition. That translates to 4 points from 60 for the carb and 4 points from 4500 for the car. So if you have a correct service replacement you have nothing to worry about. The lost points are not worth the 100's of $$$ it would cost and the time it would take to get the exact 3810. The judges will be happy that you didn't get a new repro, which carry a 30 to 50% originality deduction. Hope this helps you.

[Patrick T.]

Am I missing something here?

I'm looking at the '67 Judging Manual and it states that a 327-300/350 HP should be a Holley Model 4160, Number #3810. The picture of mine below shows a 3810. The date code is 763 which equates to the 3rd week of June, 1967. My engine build date is 7/02/67.

What is the visual designation for a replacement? I always thought my carb was original to the car. Thanks, PT

[Gerard F.]

Re: Am I missing something here?

Patrick,

Yours is correct, the 3rd week of June for a July 02 car. Perfect. A service replacement would be a carb dated after the assembly date or after the production season. After 1972, they went to the 4 digit date code.

Yours is the latest production 3810, I have seen. Looks good, has it been refinished.

Jerry Fuccillo
#42179

[Patrick T.]

Re: Am I missing something here?

Thanks Jerry, the AIM does call out for a #3906631 part # for the carb. What is unusual about this late '67 car is that the carb has no float level sight hole screws, must have been the first year for that.

The carb was rebuilt first by Holley, which was a BIG mistake, then I had Jerry MacNeish redo it over again. Never let Holley rebuild you're classic carbs, they know nothing. PT

[Justin N.]

Hey Jerry!

I just took another look and it says: 3906631-DA

LIST-3810

221

The front meter block says: 4743

3810

There is a plastic white piece on the passenger side (41R539), not quite sure about what it does? Are these still available, mine is a blackish-green color. Besides that, it looks pretty clean and the plating is continuous around all sides.

Thanks!
Justin

[Gerard F.]

Re: Am I missing something here?

Patrick,

67 was the first year for the non-externally adjustible float bowls. I think all the GM Holley's in 67 had them, and I think they only lasted one year.
What a mistake just to save a few bucks. Pain in the neck to adjust the fuel bowl level, you have to take the fuel bowl off and play trial and error.

Jerry Fuccillo
#42179

[Gerard F.]

White Plastic Piece

Justin,

I don't have the Holley book in front of me for the part number, but I think the white plastic piece is the fast idle cam. See picture:

(sorry to keep reposting this pic, I'm really proud of it)

The other white plastic piece is like an oblong washer around the choke rod.

Both of these parts will probably clean up nicely by soaking in lacquer thinner.
Some of the fast idle cams were green.

Any of those small parts are available. I got most of my small parts, replacement screws, and a fast idle cam, from the carbguy on ebay via email. Great guy to deal with. I think you were in touch with him last year on the fuel bowls.

Looks like you got a good deal on your carb. It has the original look unlike later replacements. It probably has slotted screw heads in places where the later replacements have phillips.

Jerry Fuccillo