[6d7gto]

Did the 1967 Firebird have the ram air option? If yes, what carburetor did it come with?

[RA1John]

Yes.
65 RA Firebirds were built in 1967.
All had a 4Bbl Q-Jet carb.

7027277 (M.T.)
7027266 (A.T.)

[6d7gto]

Originally Posted by RA1John

Yes.
65 RA Firebirds were built in 1967.
All had a 4Bbl Q-Jet carb.

7027277 (M.T.)
7027266 (A.T.)

Thanks John. Never seen a 7277 or 7266.

Strange that the Firebirds had a specific model just for ram air while the GTO's simply used the common high performance 7262 and 7263 from what I understand.

Did the Firebird ram air models also have less horsepower than their GTO counterpart? The FB 400's had 15 less HP from the factory to please GM. The throttle shaft was designed to not fully open at wide open throttle in the non RA birds.

[johnta1]

I think the 7027266 (A.T.) should be 7027276 (A.T.)



I have never seen one of these. Would like a pic of one.

[Kenth]

According to the Delco/Rochester Carburetor Parts&Service Manual date May 1967:

1967 Firebird Ram Air Qjet is #7037276.

1967 GTO Ram Air Qjet is #7037271.

These are the actual production carbs.

[6d7gto]

Originally Posted by Kenth

According to the Delco/Rochester Carburetor Parts&Service Manual date May 1967:

1967 Firebird Ram Air Qjet is #7037276.

1967 GTO Ram Air Qjet is #7037271.

These are the actual production carbs.

That's what my parts book also states. Oddly enough, the ram air carbs came with the same float bowls and air horns as the California non ram air counterparts!

I'll dig deeper to see if any of the other parts are the same. In theory: If they are the same bowls and air horns, then Rochester basically took the California non ram air Quadrajets...simply put a different part number on them...then put them on their respective 1967 ram air engines!

I'm wondering if they stamped the float bowls instead of using the round disk for identification. I have seen many 1967 California Qjets with the same type of stamping as the service replacement carbs. Almost all the service carbs I have seen (going from memory) were dated 1971.

The first ones (at least in May 1967) probably still had the id disk indent on the side like every other non ram air 1967 bowls (but with no disk installed? or possibly a 7037271 or 7037276 aluminum disk)?

They are obviously very rare, so unless someone on this forum has an original unmolested Ram Air Firebird or GTO and can post photos of their original carb, we may never find out!

[bobzdar]

Were there 65 RA birds made or 65 post the head change from 670 to 97/997 with the deeper machined spring pockets? I have heard both - that there were a bunch made made before they revised the heads due to valve train issues and made a new head casting to indicate the difference, then 65 with 997 heads, or that there were only 65 total made with both heads.

[johnta1]

There were 65 RA total Birds made, don't know what the breakdown might have been?

[Kenth]

Info from Pete McCartys "Pontiac Musclecar Performance 1955-79":

All 65, 1967 Ram Air Firebirds were built late season May, June, July with #997 heads.
There were 63 coupes and 2 convertibles, both A/T.
3 WQ, 42 WI and 20 XN.
Only 13 Firebirds were ordered with 4.33:1 axles.

[unruhjonny]

Pontiac Quadrajet parts (fuel bowls, air horns ect) used the same castings for their model year - some castings changed based on the date when the part was manufactured,.

All original 1967 & early 1968 Quadrajets had the disc pad with the application number stamped on a color coded aluminum disc.
All Rochester Quadrajets manufactured after moving away from the identifying disc were stamped regardless of application.

I have understood that original fuel bowls differed by application in how they were finished (eg: bleed tubes and hot air bypass);
Also the application (assembled carburetor) was a combination of all the parts which made up the assembly.
EG: 7040263 & 7040264 used the same fuel bowl, but they were finished and assembled differently.
Some replacement fuel bowls were sold with not number, because they fit several applications - others were sold (AFAIK) stamped for their intended application.

I believe that as time went on, replacement parts were not always exactly the same as the original equipment (OE) parts.

I believe that the people who know how to identify the correct parts, but don't give full public disclosure do so in an attempt to prevent re-stamping shenanigans - and I agree with this.

Be aware;
There are unstamped fuel bowls for 68+ Buicks and Oldsmobiles which show up on ePay;
There are sellers (knowingly, or unknowingly) who are incorrectly listing them as being applicable to Pontiacs, and the list price assumes these are Pontiac RA castings - but they are NOT Pontiac castings.

Years ago, my cousin had an authentic unstamped NOS 1968(?) Pontiac Quadrajet fuel bowl.

[6d7gto]

Originally Posted by unruhjonny

Pontiac Quadrajet parts (fuel bowls, air horns ect) used the same castings for their model year - some castings changed based on the date when the part was manufactured,.

All original 1967 & early 1968 Quadrajets had the disc pad with the application number stamped on a color coded aluminum disc.
All Rochester Quadrajets manufactured after moving away from the identifying disc were stamped regardless of application.

I have understood that original fuel bowls differed by application in how they were finished (eg: bleed tubes and hot air bypass);
Also the application (assembled carburetor) was a combination of all the parts which made up the assembly.
EG: 7040263 & 7040264 used the same fuel bowl, but they were finished and assembled differently.
Some replacement fuel bowls were sold with not number, because they fit several applications - others were sold (AFAIK) stamped for their intended application.

I believe that as time went on, replacement parts were not always exactly the same as the original equipment (OE) parts.

I believe that the people who know how to identify the correct parts, but don't give full public disclosure do so in an attempt to prevent re-stamping shenanigans - and I agree with this.

Be aware;
There are unstamped fuel bowls for 68+ Buicks and Oldsmobiles which show up on ePay;
There are sellers (knowingly, or unknowingly) who are incorrectly listing them as being applicable to Pontiacs, and the list price assumes these are Pontiac RA castings - but they are NOT Pontiac castings.

Years ago, my cousin had an authentic unstamped NOS 1968(?) Pontiac Quadrajet fuel bowl.

Here's a Carter 7262 with what I believe to be a Rochester ID tag (round hole and no 'c' for Carter). Pretty sure all Carters had a square hole..Looks legit otherwise: https://www.ebay.com/itm/20502475109...1098&recoPos=1

Wish he'd sell me just the tag and keep the carb!

Also, there are many mixed and matched 'Frankencarbs' as Kenth has labeled them.

[JSuchma]

Over the years, I have had many unstamped 69 Pontiac quadrajets. One was a factory-installed original that was on a 370 HP std. bore 428 I pulled from a 1969 GP SJ.

[johnta1]

From Craftsman Service News:





(didn't see any for manual trans)

[Kenth]

Originally Posted by 6d7gto

Looks legit otherwise: https://www.ebay.com/itm/20502475109...1098&recoPos=1

1967 Rochester airhorn for an A.I.R. (or Ram Air) on a Carter mfd´d 7027262 Quadrajet makes it another "Frankencarb".
I have never seen a 1967 Carter mfd A.I.R. (or Ram Air) Quadrajet.

Also, A.I.R. carbs uses a square hole on the tag were all others uses a round hole.

[6d7gto]

Originally Posted by Kenth

1967 Rochester airhorn for an A.I.R. (or Ram Air) on a Carter mfd´d 7027262 Quadrajet makes it another "Frankencarb".
I have never seen a 1967 Carter mfd A.I.R. (or Ram Air) Quadrajet.

Also, A.I.R. carbs uses a square hole on the tag were all others uses a round hole.

Good eye Kenth! You are the Sherlock Holmes of spotting the elusive Frankencarb.

But how do you tell an A.I.R. Rochester airhorn from the garden variety airhorn? I'm looking at an airhorn from a Rochester 7027263 and it looks like the one on Ebay. Mine has a 7 casting number (can't see the casting number on the Ebay carb) and my secondary flap 'stops' are still intact. Mine also does not have that triangular vent tube cover which might be hiding the adjusting screw? Is that how you tell?

P.S. Thanks for the square hole id disk info on A.I.R. fuel bowls. I have never shopped for a California model Qjet before...but if I ever do, I'll be armed with good knowledge to keep from being taken.

[6d7gto]

Originally Posted by Kenth

According to the Delco/Rochester Carburetor Parts&Service Manual date May 1967:

1967 Firebird Ram Air Qjet is #7037276.

1967 GTO Ram Air Qjet is #7037271.

These are the actual production carbs.

Does anyone know the earliest dated 7037271 and/or 7037276?

[242177P]

Originally Posted by 6d7gto

Looks legit otherwise

Is the zerk fitting a subtle way of telling
buyers they are about to get screwed?

[6d7gto]

The Carter base plate and Carter float bowl might have been together from the factory. The top and id tag must have been added somewhere over the years. Oddly enough, the float bowl and id tag are both dated H6. This is what threw me about the id tag being from Rochester. I wish Rochester also had the casting dates on the main bowl like Carter.

Although numbers correct for interchangeability of the parts, they did not mix/match between Carter and Rochester.

[Kenth]

Originally Posted by Kenth

1967 Rochester airhorn for an A.I.R. (or Ram Air) on a Carter mfd´d 7027262 Quadrajet makes it another "Frankencarb".

After a closer look with glasses and a magnifying glass on the air horn of this Carter made 7027262 I see parts of the number 7033604 as on Carter Quadrajets is cast on the outside at the right screw hole. However, the secondary air valves are stamped RP so they have been replaced.

[6d7gto]

Originally Posted by Kenth

After a closer look with glasses and a magnifying glass on the air horn of this Carter made 7027262 I see parts of the number 7033604 as on Carter Quadrajets is cast on the outside at the right screw hole. However, the secondary air valves are stamped RP so they have been replaced.

I asked the seller for a photo of that area and it does indeed have the casting number like Carters have on the outside of the air horn. I'm starting to think this carb has all the correct basic components but that id tag and other Rochester parts makes it a Frankencarb for sure...but a good parts carb for someone with Qjet savvy who wants to put together a correct carb.