I want to spray my car within the next year, 100 shot, and long term goals are a low comp procharged 377/383 for it.

I know the stock pump wont handle this. So what is available? I know there are several in tank kits, but what about using the stock in tank pump with a secondary pump mounted outside the tank? I have heard of mustang guys doing this with their 5.0's before. If you can run a 2nd pump, what kind of limits are there too it? Pros and cons?

I was just considering this cause to replace the in tank pump, you have to drop the rear down. I didnt realy want to have to do this twice though since I will be replacing the rear sometime before the engine build up? And I thought if there is no cons to just running a second pump, other than wiring, and drawing extra current? It just doesnt seem like it could be that easy though.

 

Anyone?

 

Don't put a "booster inline pump" on it.
Get a Racetronics set up and they make duel intank pumps for your blower set up.CALL THEM AND ASK what's right for your set up, they don't advertise it. All the Buick guys run them.
Ya could put an Aeromotive external pump on it too. There are several others but ya get into BiG$$$$$ like a Weldon.

 

Alright thanks.

Any reason why you shouldnt run a booster pump? I dont see how it could stress the stock pump that bad?

 

A booster pump won't pump anymore than the intank pump can feed it. If the tank pump is weak then the fuel volume won't be there.Ya can have pressure without the volume.

 

Yea, I thought about that, but I figured somehow it could and I was just having a stupid moment or something.

 

So besides the Racetronics set up, or something custom, what other fuel pump assemblies are out there that will handle a low comp, high boost, 383, with a small shot of N20? Id be shooting for 600 w/o the bottle. Maybe higher. I want to try and build the most whicked street machine I can afford.

Im still even contemplating twin turbos instead Not sure yet.

At any rate though, what kind of pumps will handle that power reliably? Also what kind of installs am I looking at? I did do a fuel pump on my Blazer, and my old bosses brothers Explorer. Their not bad at all. I know you have to drop the rear in a Camaro but ... Whatever, Gotta do what you gotta do.

 

That much HP ya are looking at a sumped tank,external pump,#8 pressure line,#6 return, a duel port regulator,fuel rails,42+# injectors running 50lbs fuel pressure and ya are all set.
A tad over a 1500 dollars.

 

1racerdude: Those are my long term plans for the car. Like in 3-5 years. Once I have the money

For the next year or two though, I plan to spray on it, so I wanted to upgrade what I could without having to do the same thing twice. I was under the impression the stock rails could handle 600ish HP F.I. But I guess I was wrong.

Is there any way I could do the tank, lines, and pump, and use the stock regulator, injectors and rails until I am ready? I'm not too edjucated about building a good fuel system. Thanks.

 

That could be done. Ya will have to get fittings from steel tubing on the factory fuel rail to #6 and #8AN fitting.
The rails,reg, are the cheap part of the system. The injectors-balanced are about 500 so those can wait, the reg is about 200 and the fuel rails are about a hundred.Fitting are a bunch 15-30 dollars each.

 

Ok thanks,

Those lines arent exactly cheap either.

Just wondering though, why would I need to go to an external pump/sumped tank set up? Alot of people said a Walbro255LPH would handle that kind of horsepower. I'm not saying your wrong, just trying to see as many opinions as possible before I buy parts.

 

A new 255 will BARELY handle the blower(8-10psi) with no hose on top of that... That isn't counting for any wear or restrictions that might be there. The duel intank will handle the blower too but don't know how much hose on top of the blower. If ya get the right blower I don't think ya gonna want any more.
Most of the time people don't have enough fuel to there engine and can't make the HP and wonder why. Their engine will do fine to about 5500 and then dies.
The external pump ya will have to do it ONE time and then add just about anything ya want. If ya get above 18-20lbs of boost(1200fwhp) ya gonna need something bigger than the Aeromotive 11101 but they make a bigger pump too.$$$$
I used the blue socketless hose. It wasn't cheap but cheaper than braided.1/2" going up front and 3/8" coming for return AND 1" from the tank to the pump. Ya need two filters too at 150.00@.The regulator is about 200.00+guage.Yea 'bout 1500 dollars worth and had the injectors. Bought the sump from Summett(90.00) and did the tank myself.Don't try it if ya never done it--- it will blow up in your face.

 

Aeromotive makes a whole fuel system for 4th gens. You get a sumped tank, fuel pump, filter, and lines if I remember correctly. It ain't cheap though.

 

I wont be shooting for anywhere near that kind of horsepower levels.

I want to still be streetable. I am trying to build a whicked street car.

I want to put down 700 at the wheels, with N20, so figure 800HP at the crank, on the bottle.

And I plan on spraying around 100, 150 shot on it, possibly direct port, but thats still in the air?

I figure the less boost I run on it, the more reliable it would be, then I would have the bottle for track ( Or street ) Nights.

So basically, Im going to build a 383, either procharged and intercooled, afr or LE heads or maybe AI, custom blower cam, shooting for 550 to 600 at the wheels, on say 12 to 14 PSI? I dont want to skimp out on anything. Then it will always be in the back of my head whether or not it will hold.

Thanks for all your time and help