C2 1966 3811 Carb vs. 1967 3370 Holley

[Tom D.]

I SHOULD HAVE POSTED 1967 3811 ABOVE.

I found these words from Bill Stephenson, posted back in 2006.

"In my opinion... the 67 carb is not as good as the 66. I believe that the 67 has no external float-bowl adjustment. You have to take the bowl off and bend the arm. 66 had adjustable floats. I have always thought that it was a cheaper carb, not better. Others more knowledgeable than me may feel differently............Bill S."

Are there other differences? 1966 390 HP to 1967 390 HP (L36, non-A.I.R.)?

Thanks!

[Pancho T.]

Re: C2 1966 3811 Carb vs. 1967 3370 Holley

I found these words from Bill Stephenson, posted back in 2006.

"In my opinion... the 67 carb is not as good as the 66. I believe that the 67 has no external float-bowl adjustment. You have to take the bowl off and bend the arm. 66 had adjustable floats. I have always thought that it was a cheaper carb, not better. Others more knowledgeable than me may feel differently............Bill S."

Are there other differences? 1966 390 HP to 1967 390 HP (L36, non-A.I.R.)?

Thanks!

Not sure but I have a couple of both.I will take a look this weekend

[Wayne W.]

Re: C2 1966 3811 Carb vs. 1967 3370 Holley

The 67 would be the 3811, and 3810, I believe 66 would be 3367. other than the obvious difference in needle valves, I think jetting in the metering block is only significant difference.

[William C.]

Re: C2 1966 3811 Carb vs. 1967 3370 Holley

both are 585 cfm rated Holley single feed carbs, but as smog was starting to get more attention the metering block jetting will likely be different.

[Gerard F.]

Re: C2 1966 3811 Carb vs. 1967 3370 Holley

I SHOULD HAVE POSTED 1967 3811 ABOVE.

I found these words from Bill Stephenson, posted back in 2006.

"In my opinion... the 67 carb is not as good as the 66. I believe that the 67 has no external float-bowl adjustment. You have to take the bowl off and bend the arm. 66 had adjustable floats. I have always thought that it was a cheaper carb, not better. Others more knowledgeable than me may feel differently............Bill S."

Are there other differences? 1966 390 HP to 1967 390 HP (L36, non-A.I.R.)?

Thanks!

Tom,

Other than the float adjustment issue, I think they are the same. Same metering block, jets, same secondary metering plate.

However they have a different throttle body part number. I think it has to do with the levers and attachments to the throttle body. They changed something there for 67, but not operational.

[Tom D.]

Re: C2 1966 3811 Carb vs. 1967 3370 Holley

Thanks all!

[Anthony P.]

Re: C2 1966 3811 Carb vs. 1967 3370 Holley

Ok a bit off the subject as to which carb is better, but I have a 66 390 horse with carb list #3606 what is that now I'm confused.

[Pancho T.]

Re: C2 1966 3811 Carb vs. 1967 3370 Holley

Ok a bit off the subject as to which carb is better, but I have a 66 390 horse with carb list #3606 what is that now I'm confused.

A #3606 is for a 390hp with air injection reactor (California smog)

[Anthony P.]

Re: C2 1966 3811 Carb vs. 1967 3370 Holley

Ok plot thickens, MI car sold out of a MI Dealer (K-19) MI car?

[Tom D.]

Re: C2 1966 3811 Carb vs. 1967 3370 Holley

Perhaps the smog control parts came as an option?

[Ronald L.]

Re: C2 1966 3811 Carb vs. 1967 3370 Holley

Does it have all the other K19 parts? Or just the carb???

[Anthony P.]

Re: C2 1966 3811 Carb vs. 1967 3370 Holley

Just the carb, when I bought it in 1974, one of the past owners removed the exhaust manifolds and installed those nasty black headers. so I can't tell by the exhaust manifolds, no pump or hoses, the air cleaner looks original, with the silk screening, and only has one tube on the bottom section for the valve cover vent. No clue what it came with can't find any history from the 8 years from birth till I bought it.

Sorry for blabering!!

[Ronald L.]

Re: C2 1966 3811 Carb vs. 1967 3370 Holley

I think I emailed you a couple of weeks ago about this car!

OK, IMHO I seriously doubt a MI car would get smog. What I can tell you is that the carb you have on the car was the service carb in the mid 70's and I think if you dig deep enough and or Joe Lucia chimes in, that will be seconded within the archives.

Next 3370's - real - not faked up ones are hard a hens teeth to find, and were in the mid 70's when most people would have settled for a holley double pumper, but your Prev Owner went to the dealer and bought was was the service part. That's actually a good thing.

Your air cleaner with printing on it is a service part, and the base just might be the real deal too.

Did you ever get your NCRS shipping report?

[Anthony P.]

Re: C2 1966 3811 Carb vs. 1967 3370 Holley

Ron yes you did email but I lost all emails when switching to a new lap top! Shipping report came back and dealer is still in business but no help might have to show up in person in the spring! Please PM or email and we can continue I do need any help to sort this out

Thanks Tony

[Gene M.]

Re: C2 1966 3811 Carb vs. 1967 3370 Holley

Is there not a different build code on the deck for a Ca emission option?