Alright, well, tonight I was driving around in my camaro, pretty bored, my friend caught up with me at kum and go wanting a race, I think he was kinda joking, but I said sure I'll go for one. make things interesting. (The vehichle he was driving was his father's new 2008 black hemi 6.0L truck, I wasn't exactly sure what else about it, but thats all I know.) I told them to fallow me to the other side of town to where dairy queen is and next to it is the ramond hill (highway up the hill.) I got stuck on the left side of the road, and he was on the right. we were side by side, even. I told him we go to the last sign we can see up on the highway was our finnish line, Any father than that was over the hill where we can't see, and since Im on the left, I would of got hit by a oncoming vehichle and I wouldnt see it. I told him to honk his horn three times (I dont have a horn on my car.) I got ready and waited to hear for the third horn, and soon as I heard it, we both took off and we took off the same exact time, but I was already getting ahead of him, I went from a full car size to two full car size ahead of him in seconds but by about 3/4's on the way up, My f*#$ING CAR started lagging horribly and bouncing around and dyed. It didn't over heat, I know for a fact I ran out of fuel. Well he started catching up and he passed me and he got the the last sign before I did. We met up at a turn around on the top of the hill and I told him my SOB story how my fuel pump went out, and I popped my hood to prove him by showing him my clear fuel filter was completely dry. He told me we'll race again after I get a new fuel pump. Kinda sucks, but I do have to admit I did pretty damn good against a 6.0L and I don't have 5th gear (it wont engaged) and I have a stock 10 bolt rear axle with 3.08 ring and pinion gears. But my question is, why am I running out of gas like that? I had a full tank of gas, I had to replace my fuel pump before (the one in the gas tank) Well me and my dad got a fuel pump that pumps into the carb that doesnt need to return gasoline back into the tank. We put the fuel pump on the other side of where the stock battery location in the engine bay, because it is easy to get to, and we really didnt want it back under the car next to the gas tank because we were afraid of the fuel pump would take a **** on a cold night. (we live up in montana, so we usally get a good deal of snow and shitty cold weathers.) We didnt want it back there for that reason, because we didnt want to mess with it in the cold, we liked the idea of it being up in the engine bay so we know if it is working, and its easy to get to. Is that a bad place to put a fuel pump? Do anyone beleive my fuel pump couldnt keep up with how much fuel the engine was wanting? (its pretty much a stock fuel pump, only pumps about 5 psi) or do anyone think it would be a vapor lock? I really doubt it could of been a vapor lock. I would watch my fuel filter and it would be empty for about 3 to 6 minutes and eventually it would pump gasoline back into the filter, but it would take a while to start to more into the filter, and it would soon push more gasoline into it and be completely full. Any one suggest what kind of fuel pump I should get? I really like the race fuel pumps, but my friend doesnt really I should need one, and I kind of too since they pump around 130 gph. but It would be nice to have one. Any suggestions what I should do? Thanks, Tim

We put the fuel pump on the other side of where the stock battery location in the engine bay, because it is easy to get to, and we really didnt want it back under the car next to the gas tank

That's a problem right there. Electric inline pumps are better at pushing the fuel rather than sucking. You NEED to mount the fuel pump back by the gas tank.

I figure that was the problem, but I wanted to hear it.

I guess on monday Im gonna get a different fuel pump (one that would push out more than a stock one would, for the safe side.)

and I'll have to do some moving around, and I'll make sure the fuel pump is in the back next the gas tank.

Thanks

Unless you are running a "puller" specific pump (per manufacturer specs), the pump will need to be mounted near the fuel tank as evilcartman said. Another issue you might be facing is some aftermarket carbs prefer fuel preasure closer to 7 pounds. Not knowing what you've got in your car (couldn't find a post from you that said what it was), you might try dialing up your preasure a pound or two. The dual accelerator pump 650 Demon I run on my Camaro prefers 7 pounds, and will out pump the fuel pump with much less under hard acceleration. Might be worth some experimentation.

Well I moved my fuel pump out of the engine bay and under the car. got it to work and I was watching my fuel filter and it only raised up to half of the fuel filter. kinda annoyed me, it was slowly raising and took a while to get to half way and it stopped, but I checked the pump and its pumping.

I took it out on the highway and drove around town 25 mph in second get letting the car sit up to 2500 rpm and waiting for the car to start to lag, than I would gun it and see if it would hesitate on me, did a few times but it did take off and didn't lag like it did.

this is a fair small fuel pump, it was something my dad got and its about the size of a fuel filter that are usually located under the car. (the big round ones that are in between the metal fuel lines that run up to the engine bay.)

only difference of the looks are that fuel pump had a positive and nagitive wire coming out of it.

If I remember right, it's not pushing no more than maybe 5 or 6 psi.

I have a Holley street avenger 670 cfm carb. I have a vacuum secondary. (dont ask why I got a vacuum secondary, dumb me.) well I have the really light spring in the vacuum secondary for more get up and go, and use the secondarys more.

maybe I should get a different fuel pump?

I'm thinking I might go to my local part store and get a pump that will work up to 7 psi.

I think I may wait it off though, because I'm already owing my parents some money and I need to pay off some bills. and I need to start saving up on getting the parts to rebuild my transmission.

I kinda don't want to go to the bank on for a loan, I kind of thought about it I would get the parts cheaper if I work for the money and use that instead of getting a loan so I dont have to pay for interest.

Do you have any way of load testing the fuel pump? Just to make sure it is still pumping under a load. I'm gonna double check with a friend or two before I suggest a home test, just to make sure it would be accurate before I suggest it to you.

If you are going to look at a new fuel pump anyway, my suggestion would be to find one that will push 7 to 8 pounds and add a simple in-line adjustable regulator. I can't think of any carb that will run more the 8 pounds, and you will have control over the preasure going to the carb. Also you would be able to adjust and experiment with what works best for your carb. I personally havent worked with a street avenger yet, but if they're like the 4150's and 4160's then 6 to 7 pounds is their better operating range.

Believe me bud, I understand about the budget issues, that's why my 454 sits waiting a rebuild and im driving a tired old 350.

mmm, ok, sounds great to me.
when I got my new 350 in the car, I drove the car around town with out the hood and a fuel gauge that was hooked up to a Mallory billet aluminum return-style 3 port racing regulator from JEGS because my friend suggested it to me, he has a blue camaro he put in a 350 in it and he was lazy and didn't want to change the TBI fuel pump in the gas tank so he got a Holley fuel pressure regulator and it leaks gasoline horribly every time he turns the key on.

so I bought the Mallory and a fuel gauge so I would know what psi it was set as with the regulator.

I was watching the fuel gauge and it was acting so weird, it would should 0 for a while and than it would start working and than it would do it again and the car would start to lag and bounce around and die.

Soon after that me and my father tore the gas tank out and took out the fuel pump in the gas tank and we got a in line fuel pump and I kept the mallory on to see how well it worked but I had it open up to 6 psi.

the car would do the same thing, but I figure it had to do with there was more fuel that was getting pushed back into the return line back into the gas tank than there was into the carb.

So we took off the mallory and the fuel gauge, ran it like that and it seem to work fine like that until up to this point.

I've been taking my car up the highway and having the car under load and it seem to hold up fine now, and soon as I get up to the highway and I checked my fuel filter and it seems full.


I'm going to keep on checking for safe reasons.

The load test i was remembering was used in conjunction with a Motor-Vac fuel system cleaning machine, not something most people would have laying around. So scrap that idea.

Sounds like the re-location worked though, hopefully that is all that was needed. If it continues to be an issue though, I would be suspect of preasure problems. Good luck bro.

Thanks
I might be cutting on driving the car during summer for needing to save some money for transmission rebuild. (I could talk to the bank, but I sure they wont like it, and I would get it cheaper if I worked for the money instead so I dont have to pay interest X-P) after that Im gonna start saving up again but for the rear axle. I figure I'll stay with my 10 bolt, I read that tech article on beefing up the 10 bolt. I hear that 4.10 gears are pretty much ideally for 6 speed cars but I want something more, like 4.56. I do understand its going to kill my gas milage, but I can't imagin the things Im gonna do to my engine will be any worse at killing gas milage.

not exactly sure what I will do to the engine, but I really like the prochargers. but I dont think i'll get one of those until I get out of college.

The couple of T-56 cars that I've seen switch to a 4.1 gear instead of a 3.73 made a HUGE difference in the off-the-line acceleration. I can't even imagine what 4.5 series gears would do, but I know it would be fun! Pro chargers, and other superchargers, are so expensive. Every time I think I might like to do that, I always start thinking of the other things that 3K (usually) would do to my car. Again, good luck with your project, and keep us posted with your progress.

If you have a carb on your car........why are you even messing with an electric fuel pump?

If he has the original motor, I don't think there is a place to mount a mechanical pump.

There is a place to mount the pump and it should have a hole for the fuel pump rod,HOWEVER the cam probably dosent have the boss to operate the pump. Atleast thats what I found on a 91 Firebird I cut up and used the engine out of

My 90 block doesn't even have the fuel pump pushrod hole drilled. Came out of a Caprice though I think.

I'm fairly certain that when GM switched from a 2 piece to a 1 piece rear main seal in 1986 was when they largely stopped drilling the oil pump pushrod hole. Of course exceptions always exist, but I'm pretty sure that was one of the minor block changes for that year.

I have a 91 305, one piece rear main, center bolt valve covers. It had the block off plate (Why would they put a block off plate if there is nothing there to block off?) the hole was there but the cam didnt have the provisions for a fuel pump rod.I know later blocks had no hole, as a mater of fact they where bare casting. there was a place where it looked like the fuel pump would go but it was just a rough casting. I dont think they did this until the mid 90's. I dunno, mybe I have an anomiallly.....

I have a one piece rear main seal engine, the guy I bought the engine from (he built them to how ever I asked it for) put a block off plate on the engine when I got it, before we put the engine in the vehicle, we checked inside to see a fuel pump rod. apparently he didn't put one in for us, nor drilled a hole for one. me and my friend figure we better not mess with it (he knew how to do it, but I didn't want to take the time to do it, it was already taking a month on working on the car, probably more, during early august to almost mid September)

I would find it kinda easier to just get a mechanical fuel pump so I wouldn't have to mess with electric, maybe sometime in the summer I'll go to mechanical instead of electric.

If it didn't have a block off plate on it you would have oil dumping out of your engine as long as that push rod hole is drilled. With a mechanical fuel pump, oil flows in that hole to lubricate the pump push rod, the pump itself, and the cam lobe the push rod would ride on.

Well duh! That was my point! If your engine HAS a block off plate you should have a hole there for the push rod!Soooooo as I said why would you have a plate if there was nothing there to block off? Meaning if you have the plate you should have the hole for the rod. And dont forget the hole in the front of the block that goes into the fuel pump push rod oil gally. If you dont put a bolt in it and you have the hole your gonna have a leak. OH!!! I get it!!
Forgive me for being a smart a$$, its one of those days!

Don't worry about it, where I work there is nothing but attitudes and smart *****, my skin has gotten pretty thick over the years. I just didn't follow what you were saying originally, I guess just the way it was put down made it look different then you meant it. No worries.