FAQ |
Members List |
Social Groups |
Calendar |
Search |
Today's Posts |
#1
|
||||
|
||||
Q-Jet Mystery
OK at 1st glance on the new to me 67 Sprint Firebird it looked to have the incorrect Q-Jet installed, it looks like a 68-72 Chevy style housing with the stamped part number, not the round tag but after looking up the numbers stamped into the body they seem to indicate a 67 Pontiac California Emissions automatic carb? Almost correct as the car is a Manual.
The car was assembled in the 3rd week of June 67, so it would be a late production car. Did they start using the 68 - 72 carb bodies before the end of the model year? Or is this a restamp or service replacement?
__________________
Jeff R 60 Jaguar Mark 2, 3.8L Automatic 67 Sprint Firebird 230 OHC-6 4-Speed A/C 78 Catlina Safari, Pontiac 400 powered 77 Astre Formula, 215 Buick V-8 T-5 73 Lemans Safari, 400 4bbl 4-speed 71 Catalina Enforcer, 455 4bbl 06 Mallet Solstice #024 LS2, Now with a Tremec 6060 6-speed! 2012 F-150 Echo Boost (My local Ford Dealer SUX!!!) 2020 Dodge Charger Scat pack (recovered) |
#2
|
||||
|
||||
Sorry to poo-poo on what seems like a mystery.
This looks totally legitimate, all day long. The OHC sprint Quadrajets used a fuel bowl with a side outlet filter - these are the only Pontiac Quadrajets to do so. That particular Quadrajet is a service replacement; The second line date code reads: 0364 That date code translates to the "thirty-sixth day of 1974" (5th of February 1974). I have observed that in some instances the service replacement carb sold by GM some time immediately following the car's model year was one which was stamped with the automatic transmission application code; Some great examples are: 1968 Ram Air (all) = 7028276 1969 Ram Air (all) = 7029270 1970 Ram Air (all) = 7040270
__________________
1970 Formula 400 Carousel Red paint on Black standard interior A no-engine, no-transmission, no-wheel option car. Quite likely one of few '70 Muncie three speed Formula 400's left. 1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing) 2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs) |
#3
|
||||
|
||||
Good to know, I was suspecting it was a SR carb. But I am not a Q-jet expert, I know just enough to be dangerous with the numbers. I had just never seen a 66-67 Q-Jet with the numbers stamped on the main body before. I am well aware the 66-67 Sprint Q-jets used the side fuel inlet like a Chevy. The 68-69 version have the straight fuel inlet like a standard Pontiac Q-jet.
Thanks for the input, any knowledge is welcome! So it may be a legit SR Carb.
__________________
Jeff R 60 Jaguar Mark 2, 3.8L Automatic 67 Sprint Firebird 230 OHC-6 4-Speed A/C 78 Catlina Safari, Pontiac 400 powered 77 Astre Formula, 215 Buick V-8 T-5 73 Lemans Safari, 400 4bbl 4-speed 71 Catalina Enforcer, 455 4bbl 06 Mallet Solstice #024 LS2, Now with a Tremec 6060 6-speed! 2012 F-150 Echo Boost (My local Ford Dealer SUX!!!) 2020 Dodge Charger Scat pack (recovered) |
#4
|
||||
|
||||
Jeff,
I have that number listed for; 1967 F-BODY 2nd Type. AT, with A.I.R. On my tag chart, it's listed as California "GREEN TAG" sorry no other info. MT I show as 7037269 So looks like somewhere in its life, the carb has been changed.
__________________
When I die, I want to go peacefully like my grandfather did, in his sleep. Not screaming like the passengers in his car. Last edited by Jeff Hamlin; 11-27-2021 at 05:20 PM. |
#5
|
||||
|
||||
Thanks Jeff, that is what my research indicates also. And thanks to unrahjonny pointing me towards a service replacement part made 2-1974 it would explain the later style main casting. What was throwing me off is the stamping on the main body like a 68 and later carb. Not the round stick on tab of the 66-67 carbs.
Reading up on what little I can find about SR Q-jets they all used the main casting of the year they were made, not the year they were made to replace. And they mostly made automatic SR carbs so it is not unusual to find a manual trans car with an automatic SR Carb installed. So I think the mystery is solved. If I find a 67 A.I.R Q-jet I will probably buy it, but it is not something on the top of the list. Thanks again for the info! As always.
__________________
Jeff R 60 Jaguar Mark 2, 3.8L Automatic 67 Sprint Firebird 230 OHC-6 4-Speed A/C 78 Catlina Safari, Pontiac 400 powered 77 Astre Formula, 215 Buick V-8 T-5 73 Lemans Safari, 400 4bbl 4-speed 71 Catalina Enforcer, 455 4bbl 06 Mallet Solstice #024 LS2, Now with a Tremec 6060 6-speed! 2012 F-150 Echo Boost (My local Ford Dealer SUX!!!) 2020 Dodge Charger Scat pack (recovered) |
#6
|
||||
|
||||
there are many s/t application carbs which were made as service replacements - but those were high volume or what might be described as "bread and butter" engines, not the lower production stuff.
The standard 400/4bbl engine as an example, typically had a SR carb made - but that carb was pretty much used on all but the full sized line with that engine.
__________________
1970 Formula 400 Carousel Red paint on Black standard interior A no-engine, no-transmission, no-wheel option car. Quite likely one of few '70 Muncie three speed Formula 400's left. 1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing) 2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs) |
Reply |
|
|