pitman Posted May 5, 2014 Share Posted May 5, 2014 (edited) My 1957 Olds 98 fuel pump just gave up. It is the same as the 56 engine pump---has a glass sediment bowl on the bottom. I have a rebuilt pump on my shelf (Box says part # 4397) that is for a '57---but for the later model so it DOES NOT HAVE THE GLASS BOWL on the bottom. Since I am REPLACING---NOT REBUILDING--I assume the two pumps are interchangeable!!!!!! Is this correct??? Thanks for any prompt replays. PITMAN Edited May 6, 2014 by pitman incorrect info (see edit history) Link to comment Share on other sites More sharing options...
PONTIAC1953 Posted May 6, 2014 Share Posted May 6, 2014 (edited) you shouldn't have any problem using the 4397 fuel pump, just make sure to compare both fuel pumps side by side for identical mounting, arm, fuel line location. i hope you're using a good fuel filter. i've had both a 57 olds 88, and 57 olds 98. charles coker, 1953 pontiac tech advisor. p.s. the aftermarket part number that i come up with for 1957 olds fuel pumps is #4540. Edited May 6, 2014 by pontiac1953 more info (see edit history) Link to comment Share on other sites More sharing options...
PONTIAC1953 Posted May 6, 2014 Share Posted May 6, 2014 i agree that having a fuel filter between the tank and the pump is a very good idea, keeps stuff from getting into the pump. Link to comment Share on other sites More sharing options...
Larry W Posted May 6, 2014 Share Posted May 6, 2014 I agree, look it over closely to see if it mounts the same. I believe the 371 was used through 1960 in 88's with 2bbl carbs. This pump may have been correct for those, but could possibly be used on earlier models. Link to comment Share on other sites More sharing options...
Guest Olds88_1956 Posted May 7, 2014 Share Posted May 7, 2014 i was in the other boat a few years ago...1956 fuel pumps run 4 psi and the 1957 fuel pumps are a 7 psi system.It took me awhile, but I did find right fuel pump...there are rebuilding kits readily available too. Link to comment Share on other sites More sharing options...
pitman Posted May 12, 2014 Author Share Posted May 12, 2014 Thanks for all the help----Another gentleman that rebuilds fuel pumps informed me that the 4397 and 4540 are the same pump--one is a newer part #--so The one I have should work OK. I will know better when I pull the bad one and compare them. AGAIN THANKS FOR ALL THE RESPONES. Pitman Link to comment Share on other sites More sharing options...
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