Pumps are physically the same (and the factory ones are from Holley as
well)...fuel pressure regulator is different (different PSI). P/N# are
different as well....i'll post them for ya.
- Bernd
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of
jdurling@bellsouth.net
Sent: Wednesday, July 23, 2003 10:01 PM
To: dakota-truck@dakota-truck.net
Subject: Re: DML: question on holley fuel pump 12-922
I have always been unnder the assumption that everything for the 15
gallon tank was the same as the 22gallon. My '96 cam with the 15 gallon
and I switched over to the larger tank. Everything fit perfectly fine
and have never had any problems with the sending unit or such. I have
had it like this for nearly 30k so I think it would have shown up by
now.
BTW, the two tanks were basically identical. Where they got the extra
capacity was a bump out on one end and the top was bulged higher on each
side of where the fuel pump installed into the tank. On the top of the
15 gallon tank it was flat. The fuel pump sits at the same exact depth
on either tank so that was never an issue even though the bucket on the
lower half of the pump was self adjusting to varying depths.
I have looked at part numbers a few times to make sure everything was
right and never found different numbers (could have missed it but doubt
it).
Also, the fuel pump form a '95 will not work with a '96 or vise versa
due to the design. The pump themselves are the same but the mounting
collar at the top of the tank is different. The '95, and mostl likely
several years before use a device that looks like an oversized hose
clamp where the '96 (possibly newer too) use a twist on colloar as part
of the fuel pump assembly. The fuel regualtor/ sending unit is a little
bit of a pita to replace but nothing too difficult (replacing it is how
I didn't find differnt part numbers for the two tanks).
Jeff Durling
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