Fuel pump

[eran tomer]

Hello
I ordered from rockauto the ep381 fuel pump, and on the pump they sent me it’s stamped 25167992. I couldn’t find anything conclusive for this part number, which doesn’t appear at all on gm sites. Is it the correct part?

 

[90 Silverado]

EP381 is the same # , read here...

Warning! EP381 & BGV00381 are NOT the same!

www.impalassforum.com

Doug in P.R.

 

[eran tomer]

is it ok to use the ep381 with stock tbi? i recall some people here recommended to use it but i can't find it.

 

[Schurkey]

Shouldn't be a problem. I'm using an EP241 which once-upon-a-time was the "hot setup" for TBI.

The pressure regulator will control the pressure just like with the stock pump.

 

[yevgenievich]

is it ok to use the ep381 with stock tbi? i recall some people here recommended to use it but i can't find it.

I had ep381 on 350tbi for a long time. I did have an occasional rich condition that would clear after 30sec or so. Was as if pressure regulator would get stuck for some reason.

 

[PlayingWithTBI]

is it ok to use the ep381 with stock tbi?

Yep, it works fine. Ratings - 155 L/Hr @ 60 PSI as apposed to ~77 L/Hr @ 14 PSI, IIRC. The regulator is big enough to bypass the larger volume.

 

[eran tomer]

does it have to be black? cos' the pump i got isn't black, it only has a black sleeve on it.
but it came in a GM box though.

 

[Schurkey]

They're all bare steel until the black insulation coozie is slid over them.

 

[man-a-fre]

What's the coozie for anyways, i would think it would make the pump run hotter?

 

[Schurkey]

Noise reduction.

I've never thought about it before, but I bet the coozie is somewhat porous; it'd conduct heat.

And, obviously, there's ambient-temperature fuel flowing through the pump to pull heat away from the mechanism.