6.5 Lift pump

[markrinker]

I have identified my lift pump as the probable source of low power under load on one of my 1994 6.5TD flatbeds.

I have power to the pump with the truck running, unhooked the lead and had same performance WITHOUT the lift pump! I am somewhat amazed that the truck will still pull a trailer, 7,000 bobcat, etc. just on the injector pump alone. Probably only due to 4.10 gearing...

Question: GM charges $199 for their pump, NAPA charges $99. Anyone used the NAPA replacement? What about inline performance aftermarket pumps?
Can you gain any added performance by slightly over-pressuring the lift pump?

[Len Whitney]

I bought one from schucks with a life time guarantee
I can't remember the price but I Know it was a lot less tha GM

[rjwest]

Advance Auto parts, 54 dollars, slightly more pressure. been running it a year now.

[triggerman]

GM list price should be $183 for your pump and vanchevrolet.com will discount it to $128.46 . You would have to cut these open to see if they are the same inside quality wise. Has any body done this ?

[whatnot]

My brother just got one for his 95 from Gomer's for $48 + shipping.

[tom.mcinerney]

Probably should get pump specified for 6.5 electronic svc. Gomer's sells them, also others of higher pressure in identical casing.