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Rochester 2bbl how to find the year/model #2502986
06/01/18 01:06 AM
06/01/18 01:06 AM
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RapidRobert Offline OP
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I need to kit it & the O'reillys guy looked on the computer & in his big book & could not find it. It is an OE Mopar Rochester 2bbl with these #'s 7038417 1389(3)488 4Z02 The (3) might be an 8. Thank you for your time. EDIT it just hit me that he would have ran the # on there & I will give him the other # tomorrow.

Last edited by RapidRobert; 06/01/18 01:26 AM.

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Re: Rochester 2bbl how to find the year/model [Re: RapidRobert] #2502998
06/01/18 01:51 AM
06/01/18 01:51 AM
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John Brown Offline
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Stamped in numbers are the only ones that will help identify the carb. Raised up numbers, those that are actually casting numbers, won't help on a Rochester.


July 19th should be "Drive Like Rockford Day". R.I.P. Jimmie.
Re: Rochester 2bbl how to find the year/model [Re: John Brown] #2503007
06/01/18 02:27 AM
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RapidRobert Offline OP
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these #'s are stamped. I will recheck if the one # in question is a (3) or an (8)


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Re: Rochester 2bbl how to find the year/model [Re: RapidRobert] #2503091
06/01/18 11:03 AM
06/01/18 11:03 AM
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maybe close? http://www.carburetor-parts.com/Rochester-2GV-Carburetor-Kit-1971-Dodge-Plymouth_p_800.html
try this place
https://www.youtube.com/watch?v=gZXHdAVGh78&feature=youtu.be

According to the video earlier years had tags under the screw which may be missing.

Re: Rochester 2bbl how to find the year/model [Re: mopars4ever] #2503152
06/01/18 01:15 PM
06/01/18 01:15 PM
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John Brown Offline
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Since at least 1969, Rochester two barrels had the numbers stamped into a flat side of the float bowl. Earlier they had aluminum tags. I looked at my library edition Rochester Carb book and it is a 1971 edition so no help there. I recall in the 80's 360's having Q-jets, so maybe they also sourced 2 barrels from GM, but that 7038417 number would normally indicate a 70's carb.


July 19th should be "Drive Like Rockford Day". R.I.P. Jimmie.
Re: Rochester 2bbl how to find the year/model [Re: John Brown] #2503203
06/01/18 03:11 PM
06/01/18 03:11 PM
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Originally Posted By John Brown
Since at least 1969, Rochester two barrels had the numbers stamped into a flat side of the float bowl. Earlier they had aluminum tags. I looked at my library edition Rochester Carb book and it is a 1971 edition so no help there. I recall in the 80's 360's having Q-jets, so maybe they also sourced 2 barrels from GM, but that 7038417 number would normally indicate a 70's carb.


No kidding? I only remember 500cfm Holley 2-barrels & themoquad 4-barrels, but I'm no small block expert.


70 Roadrunner convt. street car 440+6, NOS, 4-spd, SS springs '96 Mustang GT convt. street car '04 4.6 SOHC, NOS, auto, lowered "Officer, that button is for short on-ramps"
Re: Rochester 2bbl how to find the year/model [Re: PurpleBeeper] #2503226
06/01/18 04:01 PM
06/01/18 04:01 PM
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It's all here in this link:

http://www.carburetion.com/quadnumber.htm

703 is from the '60s with A.I.R.

8 is 1968

5 means California emissions 2-barrel

1 means Chevrolet

9 odd number means it came in front of a manual transmission.

So it could have come off a 1968 Chevelle with a 307 that was sold in California, 3 on the tree.

Mopars were Carter and Stromberg and Holley if they had to, and much later, Rochester. I cannot remember any Rochester carbs on Mopars until the '70s or 80s.

R.

Last edited by dogdays; 06/01/18 04:02 PM.
Re: Rochester 2bbl how to find the year/model [Re: RapidRobert] #2503234
06/01/18 04:14 PM
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I found that link also but since he said it was a mopar carb I didn`t post it.

Re: Rochester 2bbl how to find the year/model [Re: mopars4ever] #2503264
06/01/18 05:22 PM
06/01/18 05:22 PM
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John Brown Offline
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In my 1971 Rochester bible there is a non GM section. Listed there are various Checkers, White Trucks, 1971 Cobra Jet 429, Studebakers and 1971 Plymouth.

Carb # 7041180 is listed as 71 Plymouth Valiant, Barracuda and Fury with a 318 2 barrel.

All I know is what the book shows, but an internet search also shows Q-jets on 85 and 86 360's.

But that still doesn't answer Roberts original question. Wish I had more.....


July 19th should be "Drive Like Rockford Day". R.I.P. Jimmie.
Re: Rochester 2bbl how to find the year/model [Re: RapidRobert] #2503288
06/01/18 06:36 PM
06/01/18 06:36 PM
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IIRC FWIW in 1971 Ma Mopar used Rochester's due to a supplier shortage. I want to say there is a TSB Technical Service Bulletin on this. I'm at work so I can't research it at the moment.


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Re: Rochester 2bbl how to find the year/model [Re: RapidRobert] #2503295
06/01/18 06:55 PM
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Quote:

Carb # 7041180 is listed as 71 Plymouth Valiant, Barracuda and Fury with a 318 2 barrel.
Rochester 2GV 2 barrel carburetor kit. More complete, better fitting.

Dodge
1971 318" 5.2L
Dodge Truck
1971 318" 5.2L
Plymouth
1971 318" 5.2L


Carburetor Numbers

7041180
7047100

Re: Rochester 2bbl how to find the year/model [Re: mopars4ever] #2503419
06/02/18 12:49 AM
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RapidRobert Offline OP
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Good comprehensive info guys! I went back to O'reillys & he picked a kit that he said matched, the chebby one & it was the wrong kit but he said I could bring it back if that was the case likely since I have been in there several times on this issue plus they want me to switch my acct to them & get away from another parts house that I ain't happy with sooo I am going to take the old air horn to base gasket in & see if it matches the one in the pic he showed me today on the other chebby kit on the screen which is what I should have done first. I did confirm the carb #'s & it has a throttle lever with the horizontle Mopar arm which to my untrained eye sure looks OE Mopar. EDIT the stamped # is 7038417 and 13898488 stamped underneath it then stamped 4Z02

Last edited by RapidRobert; 06/02/18 12:51 AM.

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Re: Rochester 2bbl how to find the year/model [Re: RapidRobert] #2503433
06/02/18 01:26 AM
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John Brown Offline
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The 13898488 number googles to a Rochester boat (marine) carburetor. Lots of pictures too.


July 19th should be "Drive Like Rockford Day". R.I.P. Jimmie.
Re: Rochester 2bbl how to find the year/model [Re: RapidRobert] #2503544
06/02/18 11:58 AM
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Re: Rochester 2bbl how to find the year/model [Re: mopars4ever] #2503886
06/03/18 01:18 PM
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RapidRobert Offline OP
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I made a mistake on the numbers: the 13898488 was in a mini clocking circle on the flat surface under the top air horn. 7038417 is stamped on the main body side with 4Z02 stamped right under it. it has a 1&11/16 bore. here is a pic of the critical gaskets that I would need to match in a kit. the throttle bracket sure looks OE Mopar.

SAM_0405.JPGSAM_0926.JPG

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Re: Rochester 2bbl how to find the year/model [Re: RapidRobert] #2503907
06/03/18 01:59 PM
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https://carburetion.walkerproducts.com/rochester/rochester-carburetor-kit-2bbl-2g/

Page 11 and 13

Looks like the parts numbers might be G1408 and G520


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They say there is always the exception that proves the rule.
Don't be the exception.
Re: Rochester 2bbl how to find the year/model [Re: Supercuda] #2503912
06/03/18 02:06 PM
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RapidRobert Offline OP
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thank you, I will check it out.


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Re: Rochester 2bbl how to find the year/model [Re: RapidRobert] #2504072
06/03/18 09:32 PM
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By accident I stumbled across the alum tag for it: Mercruzer MCM 200/898 then underneath that is 1389-8488 so I thought well that takes care of the kit I need BUT it had NO jets & neither Rochester or Holley jets will screw in. [ Moparts Family Site - Keep it Friendly ]. Any thoughts?

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Re: Rochester 2bbl how to find the year/model [Re: RapidRobert] #2504157
06/04/18 12:45 AM
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Time to seek out another carb.

Re: Rochester 2bbl how to find the year/model [Re: RapidRobert] #2504304
06/04/18 12:03 PM
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Anytime you find a carb with black finish,it is usually a marine application.

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