Nothing right now, just saw an opportunity to learn.

A new stock GM pump would be an AC Delco, right?

 

Yes sir.

 

Thank you!

 

Hmm...I was always under the impression that the stock unit would not be enough once you start upgrading your injectors, doing your heads, can etc. You mean to tell me j spent all that time installing a 255 walbro for nothing?!

 

I agree, we have had more failures with Walbro's than with stock, the only reason the stock ones tend to die is very old age and running them empty.

 

+1 For Racetronix pump and harness kit. Everything went better than expected and have zero problems after almost 2 years so far.

 

Great reply Ed. That's a part of what I was trying to say earlier. But just like you stated about learning over time. Well, back in 03, I thought the racetronix would have been a great upgrade since my current OEM pump had 135,xxx miles on it. PFFT!!! After going back with ACD, I ran a 150 shot on top and ran quite a few datalogs during it...never missed a beat. Most LTx street cars can easily get by with an OEM. If for some reason one needs to run such a big shot of nitrous, then I believe a dedicated fuel system is in order.

BTW, the same style pump was used on GM's 7.4L. Those hogs sucked more fuel than 3 LT1s.

 

Unless you have a lot more than I, I would have to say you did.
Cut the side bars out of your doors yet? :-)

 

I burnt up my stock sending unit wiring with an aeromotive 340 in the tank.

 

Might want to check the voltage drop on your grounds. We see more problems there than anywhere.

 

Will do, thanks.

 

What's the ac delco fuel pump part #?

 

For what car?


F-body
94-95 pump module assy - FLS1031
Pump only - FLS1055
Strainer kit - TS44

96-7 pump module assy - FLS1077 Not avail. as pump only.
Strainer kit - TS44

94-6 Impala SS -
Pump Module assy - FLS1072
Pump only - EP376 with strainer kit
Strainer kit only - TS42

 

I have a 97z28. Hmmm yea my pump is barely starting to go, 16 yr old pump isn't to shabby, ill buy the whole assembly, and give it a fresh pump, I don't track or race my car.

 

What factor injected 7.4l made that kind of power?
The 454SS was rated at 230hp 385tq how do you burn thee times as much fuel and make less HP?


Between my own and a friend's I have had my hands on 4 racetronix installs 2 of them 365day a year drivers for more than 5 years since, only problem we ever saw was one developed a hairline crack in a fuse, no burn just a fine crack only visible in sunlight.

I will agree the stock pump is very reliable and often probably replaced too quickly.
In my case my car came with a smaller fuel pump for the L99 so I had to do something and at least one of the other installs I did was in single digit weather due to a stocker failing, but it was old and I am not saying stock is bad, EVERYTHING wears out eventually.

Far as failures I haven't been inside an f-body fuel tank but as I understand it there is some sort of bucket? Maybe the exposure to a limited amount of fuel lets them run hot? The b-body tank has next to no baffling, it is so bad that those of us with quick cars pretty much have to race with at least half of the 23gallon tank full or it will starve a little after launch. That is a lot of fuel ALL of it sloshing around past the pump keeping it cool, not just a limited amount in a bucket.

Far as wiring, I would guess that Ed's car is a lot cleaner and corrosion free compared to many of our street cars which could be a contributing factor in his success with stock wiring when other's have had failures. The b-bodies are known to melt the tank wiring on occasion with a stock pump.

 

The 454 SS was a nameplate seller. Not a true performance truck. The work trucks with 7.4 & 8.1 had much more hp and drank fuel. That's why I own a Duramax. More power using less fuel.

 

I inquired about a return request and they stopped responding to my emails. I won't be doing business with them again. I love how they don't have a phone number either.

 

This is kind of sad to hear. I thought Canadians were supposed to be cool. Maybe whoever told me that said tool and I misunderstood.

 

I owned a 1989 crewcab dually 454, I am familiar.

 

Well that's disappointing as I thought Racetronics was the go to for our pumps and my 97's pump just went poop. I checked Oreilys online and the Delphi pump is $482.99 ouch! Where can I get a GM pump at a more competitive price?