Fuel sending unit interchangeability

[big94gmc]

I do not know enough about pressure requirements, gallons-per-hour needs, or anything like that to know what fuel sending units and pumps will work with other applications.... What I'm getting at is this: the truck I'm tearing down HAD had an LS1 from a '98 Z28 dropped in it, and the actual tank and drop-in unit in the tank look practically brand new. So, what I'm wondering is, if the guy put in a SU/pump to work with the LS1, will that work with (i.e. no issues whatsoever) a stock non-Vortec TBI.

Will it be too much, will it not be enough, would it work the same, would it be a waste of time?

Does this make sense?

 

[big94gmc]

No one?

 

[84zz4ss]

LS1 static fuel pressure 55-60 psi.

TBI running fuel pressure 12-15 psi.

It may run a little rich. You could regulate it down before thr TBI. But to answer your question no it will not work. It will require fab or cause problems.

 

[dyeager535]

Isn't that what the fuel pressure regulator does that's already on the Throttle Body?

 

[big94gmc]

Isn't that what the fuel pressure regulator does that's already on the Throttle Body?

???

 

[Russell]

I see guys running walboro 255 lph pumps on their TBI trucks all the time. As long as the return line is big enough to return all the un-used fuel without building up pressure I can't see it being a problem to run a 60 PSI pump in there.

 

[4X4HIGH]

I'm running a 255 LPH pump (90 PSI pump) on my TBI and i've got it regulated down to 18 PSI.