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Fuel pump compatibility #1333027 Fri Nov 08 2019 08:54 PM
Joined: Sep 2012
Posts: 10
5
54_Rookie Offline OP
New Guy
I have a 1954 1/2 ton with a 1962 engine block. The fuel pump has seen better days and it is time to replace or rebuild. Since it was a 54 truck I was thinking about installing a glass bowl pump for the looks. However most of the catalogs/websites list the glass bowl fuel pump up to 1957.

Does anyone know if there is a glass bowl fuel pump that fits the 1962 235 L6 engine? From most of the pictures online the full metal and the glass bowl fuel pumps look similar in mount and lever arm. I know looks can be deceiving.

Any help is greatly appreciated

Re: Fuel pump compatibility [Re: 54_Rookie] #1333039 Fri Nov 08 2019 10:15 PM
Joined: May 2005
Posts: 6,369
B
bartamos Offline
Master Gabster
I'm guessing that a 54 235 and a 62 235 have the same fuel pump physical fit parameters. I'm guessing that the PSI and Volume requirement for the carb is what the difference is. If that is the case, the difference is fairly small. 4-5 PSI range and 20-25 GP range for 54 and 62. Both had 1 bbl carbs. Don't quote me on this. Among others, tclederman . Pre '68 Dave . CarbKing are the experts.

If that is confirmed, you can use a 1954 glass pump on your 62 motor..... or this guy on any pump.


I'm away on an ego trip. Will be back on Feb 30.
I'm not an Auto Mechanic, but I play one on TV.
I charge $0.02 for every opinion and I take Paypal.


Re: Fuel pump compatibility [Re: 54_Rookie] #1333047 Fri Nov 08 2019 11:53 PM
Joined: Sep 2012
Posts: 10
5
54_Rookie Offline OP
New Guy
Thanks, the gph and psi range you stated is what my current pump is rated at. Most websites provide little information regarding rebuilt pumps. Since I'm running a stock engine with a 1bbl carb. I'm guessing it will work. Guessing being the main word.
???

Re: Fuel pump compatibility [Re: 54_Rookie] #1333070 Sat Nov 09 2019 02:42 AM
Joined: Aug 2018
Posts: 181
D
drdoug Online
Shop Shark
The glass bowl pump will fit fine and work fine. The difference is in the angle of the fuel lines entering/exiting the pump. You can use on the '62 engine, without issue, either the AC 9797 (combo pump with the vacuum assist for the wipers) or the AC 9798 (no vacuum assist section if you don't need it) that were spec'ed for the '54 235 with glass fuel bowl and straight across fuel line orientation. The later pumps (after '58) had a different fuel line orientation - about a 120 degree angle between fuel line fittings, as opposed to the earlier pumps that oriented the fuel lines at 180 degrees - straight across.

Re: Fuel pump compatibility [Re: drdoug] #1333092 Sat Nov 09 2019 12:38 PM
Joined: Sep 2012
Posts: 10
5
54_Rookie Offline OP
New Guy
Thanks for the info, I was also using this as a excuse to run new fuel lines so different orientation won't be a problem.

Re: Fuel pump compatibility [Re: 54_Rookie] #1333094 Sat Nov 09 2019 01:01 PM
Joined: Feb 2004
Posts: 19,250
H
Hotrod Lincoln Online
Boltergeist
Rebuilt fuel pumps can be a huge pain at times. Older ones can have rubber parts that don't play well with ethanol-added gasoline. A lot of the new ones are made overseas and the failure rate is horrendous. Don't assume because it's new, that it's "good". ALWAYS do a volume, pressure, and vacuum test on your newly-installed fuel pump. Then say a small prayer that it doesn't leak!
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Fuel pump compatibility [Re: 54_Rookie] #1333148 Sat Nov 09 2019 11:05 PM
Joined: Sep 2012
Posts: 10
5
54_Rookie Offline OP
New Guy
Thanks for the reminder I will definitely take the time to verify the new pump

Re: Fuel pump compatibility [Re: 54_Rookie] #1333434 Tue Nov 12 2019 05:47 AM
Joined: Jul 2014
Posts: 133
1
1Ton_tommy Offline
Shop Shark
Even new ones have a high failure rate and the brand doesn't seem to matter. Just because it's new or newly rebuilt doesn't mean it'll stay new. The last new pump I bought lasted me maybe 5,000 miles or about a year before it started leaking oil and making a mess. I replaced it's predecessor because it put out almost 8 PSI and invariably flooded the carbs when shut off, even for a minute. I have been using an electric pump that puts out ~4psi since. Six months and a dozen 350-mile trips over the mountains; so far so good. They must be filtered on the inlet FWIW. I know it doesn't look stock but if you're still working these ol' trucks you have to make a few work-arounds.


51 3800 PU, 55 235 (w/cam, headers, 2 carbs, MSD ign.), SM420 & Brown-Lipe 6231A 3spd aux. trans, stock axles & brakes. Owned since 1971.
Re: Fuel pump compatibility [Re: 54_Rookie] #1333466 Tue Nov 12 2019 04:18 PM
Joined: Feb 2004
Posts: 19,250
H
Hotrod Lincoln Online
Boltergeist
It's possible to gut out a mechanical pump and use it as a dummy with a straight line routed through it, then put an electric pump under the cab out of sight near the fuel tank outlet. Just use an oil pressure sensing switch and a relay to power the pump so it stops pumping gas in case the engine stalls.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Fuel pump compatibility [Re: 54_Rookie] #1333641 Wed Nov 13 2019 07:07 PM
Joined: Jul 2014
Posts: 133
1
1Ton_tommy Offline
Shop Shark
Thanks HRL. A relay is one of those things I know I should have done but have not gotten around to. Your idea sounds pretty easy to do. I'll get on it.


51 3800 PU, 55 235 (w/cam, headers, 2 carbs, MSD ign.), SM420 & Brown-Lipe 6231A 3spd aux. trans, stock axles & brakes. Owned since 1971.

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