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#1
03-08-2014, 03:02 PM
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Correct Choke Pulloffs
Pictured is the correct pulloff for I believe all the 8 cylinder 1968 Firebird and Tempest cars including the early 1969 Ram Air III carbs that used the 1968 numbered carb (7028273/0). The box also says it is correct for 1967 Tempest and Firebird 8 cylinder cars so that may be true also.
Did the 1969 Ram Air IV carbs use a different pulloff? And did 1970 cars use a similar pulloff or begin using that white generic looking one I see everywhere? (I have always wondered if the white one was ever used on an original 68/69/70 carb.) My 1969 RA III 7028273 uses this pulloff and my 68 Firebird 400 Auto does also, but the Firebird's has a broken edge so I wanted a new one. I have never had enough original carbs to figure all this out. Thanks
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My Wife: "I thought I married a sophisticated business man, but what I actually got was a redneck fisherman with muscle cars." Some people know all of their rights, but none of their obligations. |
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#2
03-09-2014, 03:38 AM
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70 RA Quadrajets have a two colored pulloff.The front side(side with the embossed numbers) was a crème color and the back side was black- Buick used the same pulloff on one of their two pulloff setups.That is a very very rare pulloff, rarely see these ..The generic white ones are just that, generic.. Pretty sure 69's RA used the same crème colored pulloff, at least the later ones. many think the 70's used the two port gold metal pulloff, that was used on non RA cars.1971 started using a single port metal pulloff with a blue'ish plug on the back(part that moves and connects to 2ndary top valves).. either 68 or 69 RamAir quadrajets also used a solid black pulloff- found a NOS one for a well known RAll I did years back..Your silver one was also used during the 68-70 period.. just know the crème color is 70, and 68 and I think early 69 used the black one.That silver/grey one you show is accepted as correct and is way better than using a generic white one..The black ones and definitely the crème ones are impossible to find..
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#3
03-09-2014, 03:42 AM
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Plus PY's parts look up confirms what I said:
7038237 3.755 P/8-T/8-F/8 4B.C CONTROL, vac. break (Roch.) 1 1967 1967 3-90 7038237 3.755 F/8-T/8 4B.C. Ram Air CONTROL, vac. break (w/7028274, 8275, & 8277 1 1968 1968 3-90 7038237 3.755 All 4 B.C. exc. Ram Air or 400 H.O CONTROL vac. break (Roch.) exc. cable 1 1968 1969 3- Looks like that number is for '8274,'8275 and '8277 Quadrajets |
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#4
03-09-2014, 09:34 AM
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There were also different part numbers for the vacuum break assembly which included the CPO, choke lever, and bracket, and a separate one for the CPO itself. Not positive for 69, but for 70, both Carter and Rochester made the single port CPOs and had a different appearance on the yellow portion where the ID number was cast in the plastic. I have one on my 7040273 WC, and one on an unmolested 7040270 WA.
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Jason Last edited by Jason67; 02-27-2016 at 10:49 PM. |
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#5
03-09-2014, 12:24 PM
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Quote:
My RAIII also came thru with the "RAIV" distributor dated November 1968 so everything was not always according to the parts book. Again, what do you think of the carb numbers listed--they're not even Ram Air carbs, are they? Thanks
__________________
My Wife: "I thought I married a sophisticated business man, but what I actually got was a redneck fisherman with muscle cars." Some people know all of their rights, but none of their obligations. |
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#6
03-09-2014, 12:48 PM
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You comment that my parts book listing says RamAir, but you are disregarding the middle line where it says except ram air.. I am pretty sure the ones for RamAir will say ram air and list the car b numbers..
also my 1972 dated MPC shows the following number: 7038239 for 68-69 listing carb # 7028270 &7028273 carb numbers 7038239 for 1969 400 H O engines with hood openings cable controlled(that was ramair for 69??) .. as far as the other number showing RamAir, ramair was sort of loosely used back then. I know the RAlll was called the HO for a while.. Eitherway, just trying to help.. If you think your silver #7038237 choke was on RamAir carbs, well maybe the GM parts books need to be changed. I wasn't at GM in the 1960's, so I cannot say for sure, but if you know for sure, guess the catalogues need to be changed..because they are showing what I said originally and what I have found in practice.. I have done a couple of the 68 RAll's, many many, too many to recall 69 and 70 RAIV's for guys and they send to me because of the correct exterior cosmetic job I do. I sort of know these .. Without a doubt the silver /black was used back then, just not on RamAir carbs.. the different colors were metered differently, which is why you are not going to see different ones being interchanged.. RAll,RAIV's 68-early 69 used the 8239 solid black pull off RAIV 69-70 used the crème colored pulloff |
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#7
03-09-2014, 12:54 PM
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Quote:
7028275 = 1968 Ram Air 400 with manual trans, A body 7028277 = 1968 Ram Air 400 with manual trans, F body I've got a few original Rochester choke pull-offs here. They have the same part number on them as your silver one. One is off-white with a black back side, one is all crème colored (front & back) and one is crème with a black back. One of them is on an original 7040273 carb, one is on a 7029270 and one is separate (already removed from a carb). Can post pics if anyone is interested... Last edited by blue71ta; 03-09-2014 at 01:22 PM. |
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#8
03-09-2014, 02:04 PM
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Quote:
And Bill, I am not trying to argue with you. I do have a 1970 (I believe) MPC reprint that I will drag out if I can find it.
__________________
My Wife: "I thought I married a sophisticated business man, but what I actually got was a redneck fisherman with muscle cars." Some people know all of their rights, but none of their obligations. |
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#9
03-09-2014, 03:44 PM
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Bet... no worries. I was just trying to help.. The last two originals of the 8239 and the crème 1970,think it ended in xx95, I put one on Ricks 68 RAll and his current 70 RAIV,and Chuck Henleys 69 RAIV/RAV race car.. Pull out you MPC and you will see what I am describing, I have taken the black ones off many originals and have had a total of 3 NOS crème pulloffs. The grey one you show was pretty much the one used on all others during this period.I have 4-5 in my shop right now.. You could buy them loose,like you have, or already attached to the "fan" and it's mount..
As I said earlier, that is the one(grey/black) that everyone ends up using as correct, the real 8239's /crème/black are basically unobtainable. If I were you I would just use what you have and be happy. It is a correct original and the majority of Pontiacs have the white ones So no..I did not take anything as argumentative.. |
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#10
03-09-2014, 04:58 PM
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Ok, here is what I have felt confident is the original choke pulloff on my 69 28273 carb built Dec. 68. I think it has the same number on it as the silver one below but will make sure. (This is an old picture I took--not taken today.)
This one is not silver of course, but I thought it had the same number in the circle on the front and is therefore basically the same part. This may be the creme colored pulloff that you are referring to, but I assumed if it had the same part number in the circle, it was really the same part.
__________________
My Wife: "I thought I married a sophisticated business man, but what I actually got was a redneck fisherman with muscle cars." Some people know all of their rights, but none of their obligations. |
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#11
03-09-2014, 05:22 PM
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ok, here are some pics.
Pic 1 is the crème color with black back (7029270 carb) Pic 2 is the off-white with black back Pics 3 & 4 are the crème/yellow with yellow back (7040273 carb) |
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#12
03-09-2014, 05:51 PM
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Quote:
Pic 2, is it from a marine Q-jet? The factory pulloff on my 7040270 is "creme" w/black back. |
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#13
03-09-2014, 06:24 PM
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don't know what that one came from originally |
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#14
03-09-2014, 06:24 PM
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__________________
Mike/Illinois |
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#15
03-09-2014, 06:29 PM
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Quote:
__________________
My Wife: "I thought I married a sophisticated business man, but what I actually got was a redneck fisherman with muscle cars." Some people know all of their rights, but none of their obligations. |
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#16
03-09-2014, 06:37 PM
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Is it true that these normally use the same number in the circle and different colors denote different applications?
The pulloff in my earlier picture on my 28273 is black on the back, and I assume creme on the front. I might chalk this thread up to learning and start a new one when I get this figured out............... 
__________________
My Wife: "I thought I married a sophisticated business man, but what I actually got was a redneck fisherman with muscle cars." Some people know all of their rights, but none of their obligations. |
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#17
03-09-2014, 07:19 PM
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Quote:
Original 1970 Ram Air carbs had a yellow front, black back, probably 69 too. The plastic fades over the years to a cream color.
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Jason |
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#18
03-09-2014, 09:25 PM
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The black / off-white ones are the assembly line units.
* The grey one you have is "probably" a later Service Replacement. The colors on the production CPO's were like pick codes. Easier/Quicker to determine color(s) than eyeball the tiny numbers. * Take a rag with a dab of lacquer thinner on it and gently wipe a spot on the nipple area of the grey one and see if it reveals anything - or nothing. It does "look" like it might have been a used one that got sprayed. Or the mold wasn't polished with release agent. Jason what number is on your 70 RA CPO's ? |
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#19
03-09-2014, 09:27 PM
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Here are some good close up pictures of the late 69'1970 RA pulloff. This one is nOS on a RAIV Qjet I did back in August..OH.. and yes, the front is more yellow than crème.. But rear is definitely black..
I just remembered something, when doing the RAll a few years back, we found a bulliten where the choke pulloffs on the 8270/8273 were replaced with the black pulloff and the bulliten noted to put a yellow mark on the pulloff to verify the change had been done. The original 8273 I was working on that a black pulloff with a yellow paint dab on it.. wish I had saved that bulliten,but without a doubt the owner and I both read it..Thinking he found it and sent to me.. |
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#20
03-09-2014, 09:57 PM
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Quote:
I was wrong about how to identify the different applications since I kept ignoring the colors.
__________________
My Wife: "I thought I married a sophisticated business man, but what I actually got was a redneck fisherman with muscle cars." Some people know all of their rights, but none of their obligations. |
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