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01-11-2007, 12:59 PM
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#1 |
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Saving 1 truck at a time!
Join Date: Aug 2001
Location: Kent, WA
Posts: 6,465
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'72 Rochester Help
I have reebuilt a few of these but have not seen one like this with the in-line fuel inlet and the funky vacuum port on top (maybe it just goes directly into the air cleaner). The number (7042272) indicates it is a '72 400-455 Pontiac carb. I can't find any info about the big vaccum port. I don't want to rebuild it if I can't use it. Anyone have some experience with this beast?
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'68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary) |
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01-11-2007, 02:43 PM
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#2 |
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It's a catastrophic success.
 
Join Date: Jan 2003
Location: Oklahoma
Posts: 2,077
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Re: '72 Rochester Help
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01-11-2007, 03:26 PM
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#3 |
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Senior Member
Join Date: Feb 2005
Location: Maynardville, Tn
Posts: 3,030
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Re: '72 Rochester Help
I don't remember the #'s but some of the pontiac carbs where rated at 850cfm. Would be a plus if you are into the ptm sysndrome. If not some of the pontiac guy's would gladly take it off your hands.
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SEMA Network- Protect our Hobby! 71 C30 in pieces, starting to come together. Click here for A Place For Tennessee Truck Enthusiest To Meet |
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01-11-2007, 03:56 PM
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#4 |
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Senior Member
Join Date: Dec 2006
Location: Studio City, Calif.
Posts: 2,883
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Re: '72 Rochester Help
http://www.tocmp.com/manuals/Carbs/R...73_4M_0001.htm
http://www.tocmp.com/manuals/Carbs/R...QJet/index.htm Last link is the full manual.Don't know if it explains that verticle tube.
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'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, stereo speakers, 2nd owner, Work-Truck supreme. Last edited by WorkinLonghorn; 01-11-2007 at 03:59 PM. |
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