For 400-450 RWHP '03 Cobra tank and pumps are his best bet. A single focus pump in the stock tank is good to maybe 400 RWHP - sometimes less. The main limitation of the GT tank is the fuel can in the tank - put a big pump in there and it will be sucked dry.

 

For 400-450 RWHP '03 Cobra tank and pumps are his best bet. A single focus pump in the stock tank is good to maybe 400 RWHP - sometimes less. The main limitation of the GT tank is the fuel can in the tank - put a big pump in there and it will be sucked dry.

ya he doesnt realy have that kind of money to do the cobra tank and pumps set up thats why i was loking for other alternatives

 

Then he's going to have to keep the power low or risk damaging the motor.

 

Then he's going to have to keep the power low or risk damaging the motor.

so the only 1 option he has cobra pumps and cobra tank

 

A cobra tank and pump would be the ideal setup.He could go with a KB boosta pump and the stock gt pump.There are many guys running it just fine up to 450rwhp.

 

Steeda pumps are only good to 425rwhp or so. At the 450 rwhp level his best bet is the Cobra pumps. The CObra pumps can go in a GT tank, it has been done. But, you are better off with the tank because of the better baffling (keeping the fuel around the pump) than the GT tank. The GT tank puts the pumps in a basket and on decent pulls it is not hard to suck the basket dry faster than more fuel can get back in there, especially if the tank is less than 1/4 tank full or so.

Fuel system is the one part of a build that you DO NOT want to skimp on. Skimp other places if need be but not the fuel system! If he does not hav ethe money, the he needs to save and get it or keep the power level down unti he can. HP is not cheap.

 

where can u buy just the tank? i already have the pumps just need the tank

 

where can u buy just the tank? i already have the pumps just need the tank

First place I always look is the classifieds. I picked up my tank and pumps with -6AN feed line for $500.

After that, places like Modular Powerhouse, Modular Depot, or even just you local Ford dealer can get them for you.

 

if i buy a brand new one do i need anything else besides the tank or do u have to get a basket for it, im not sure thats why im asking

 

I've seen a lot of 450 RWHP GTs with stock tanks and BAPs too - but I also have lots of aborted datalogs showing pressure drop across the injectors for cars with that setup (and after the tank and pumps were swapped) and in each case you can see it dropping dangerously low - sometimes the pulsewidth is increased by the processor to compensate, sometimes it doesn't cut it and it goes very lean, very fast. Because no matter the pump capacity, if the fuel can is too small, it'll get sucked dry. There are a number of really lucky people who may use a stock GT setup with a BAP, but looking at the data, it's just plain scary. BAPs work great, but if the fuel isn't there to pump - it can't do anything. The other thing is there will be more load on the car on the street/strip vs. the dyno, so it'll be worse when driving it. Considering you are already past the HP limit of the stock low end at 450 RWHP, going lean like this makes it a lot worse. If you spend the $$ on a blower, you need to include the cost of a fuel system upgrade or don't do the blower. Band-aids are not good when it comes to this. It'd really suck to get your new blower on and fry a piston because you run out of fuel.

Don

 

if i buy a brand new one do i need anything else besides the tank or do u have to get a basket for it, im not sure thats why im asking

There is no basket in the 03/04 Cobra tank like the GT tank, but the 03/04 Cobra fuel pump assembly (not just the pumps) comes with the filter sock, wiring, fuel lines from pumps to lid, and the fuel tank lid that bolts the pumps into the tank. 03/04 Cobra pump assembly look like this (on the left). The other pump is a '99 Cobra but the basket that we are talking about in the GT looks like the one shown for the '99 Cobra.

The tank will come complete, but you will need to remove the two vacuum canisters (blue) and attached lines that are on your GT tank and transfer them over to the Cobra tank. Here is a pic of my Cobra tank that might help you see what I am talking about. I was lucky enough to find a completed tank/pump set-up ready to install in the car. On some years the GT plug is different than the Cobra plug for the fuel pumps so you have to do some minor wiring at the plug but you need to talk to someone else about this. I am not sure of the details.

For reference, here is a pic of the GT tank that came out of my car. You can see the basket in the tank that we are all talking about in this picture, too.

 

I've seen a lot of 450 RWHP GTs with stock tanks and BAPs too - but I also have lots of aborted datalogs showing pressure drop across the injectors for cars with that setup (and after the tank and pumps were swapped) and in each case you can see it dropping dangerously low - sometimes the pulsewidth is increased by the processor to compensate, sometimes it doesn't cut it and it goes very lean, very fast. Because no matter the pump capacity, if the fuel can is too small, it'll get sucked dry. There are a number of really lucky people who may use a stock GT setup with a BAP, but looking at the data, it's just plain scary. BAPs work great, but if the fuel isn't there to pump - it can't do anything. The other thing is there will be more load on the car on the street/strip vs. the dyno, so it'll be worse when driving it. Considering you are already past the HP limit of the stock low end at 450 RWHP, going lean like this makes it a lot worse. If you spend the $$ on a blower, you need to include the cost of a fuel system upgrade or don't do the blower. Band-aids are not good when it comes to this. It'd really suck to get your new blower on and fry a piston because you run out of fuel.

Don

I am not sure I am following you Don.Are you talking about not having enough fuel in the tank for the pump?I have the cobra setup with a boosta pump and understand I am good for 550-600rwhp other than bigger injectors.Are you saying the boost pump is not a good way to go?

 

I am not sure I am following you Don.Are you talking about not having enough fuel in the tank for the pump?I have the cobra setup with a boosta pump and understand I am good for 550-600rwhp other than bigger injectors.Are you saying the boost pump is not a good way to go?

I think he's talking about the basket in the GT tank getting sucked dry. Correct me if I'm wrong Don.

 

LaserRed is correct - I'm talking about the way the internal components in the GT tank are designed vs. the way the '03 Cobra tank is designed. The BAP works really good when fuel is available for the pump to suck.

Nice Pics 2000AtlanticGT! Illustrates the point very well!!

 

LaserRed is correct - I'm talking about the way the internal components in the GT tank are designed vs. the way the '03 Cobra tank is designed. The BAP works really good when fuel is available for the pump to suck.

Nice Pics 2000AtlanticGT! Illustrates the point very well!!

Thanks for clearing that up.

 

ya he doesnt realy have that kind of money to do the cobra tank and pumps set up thats why i was loking for other alternatives

I'm sick of people using this cop-out. He has money to buy the car, money to buy the supercharger, and money for the intercooler. He can find the freakin' money for a simple fuel pump and tank. Do things right the first time. Tell him not to be a cheap-ass and stop trying to cut corners. $100 now will save $1000 in the future.

 

I'm sick of people using this cop-out. He has money to buy the car, money to buy the supercharger, and money for the intercooler. He can find the freakin' money for a simple fuel pump and tank. Do things right the first time. Tell him not to be a cheap-ass and stop trying to cut corners. $100 now will save $1000 in the future.

what kind of fuel system should he go with then???

 

I'm sick of people using this cop-out. He has money to buy the car, money to buy the supercharger, and money for the intercooler. He can find the freakin' money for a simple fuel pump and tank. Do things right the first time. Tell him not to be a cheap-ass and stop trying to cut corners. $100 now will save $1000 in the future.

dude we all aint rich like you .you dont know his financial situation . he bought the blower new for 1800. a sweet deal . hes not looking to cheap out but there are other alternatives than the complete cobra swap and thats what hes looking for. there are many 400hp guys not running cobra swap and doing it for a long time. thanks for input he bought cobra pumps and will mod his stock tank. it doesnt get driven that much so he will keep at least a half tank of gas and get a custom tune

 

dude we all aint rich like you .you dont know his financial situation . he bought the blower new for 1800. a sweet deal . hes not looking to cheap out but there are other alternatives than the complete cobra swap and thats what hes looking for. there are many 400hp guys not running cobra swap and doing it for a long time. thanks for input he bought cobra pumps and will mod his stock tank. it doesnt get driven that much so he will keep at least a half tank of gas and get a custom tune

The title is what is the best, and the best for that setup would be the 03-04
Cobra setup. I used an Aviator for a while.

 

A cobra tank and pump would be the ideal setup.He could go with a KB boosta pump and the stock gt pump.There are many guys running it just fine up to 450rwhp.

I'm probably hijacking this a bit, but just on a side note, I have never heard of anyone else with the kind of set-up I'm using.
For about 20-25K miles I've been using the stock GT fuel system w/BAP and 47lbs injectors. But, my bottom end IS forged, and only putting down 393rwhp.
I never mention it to stay out of any flaming, but since it was already mentioned here, there you go.

P.S. I had a really good tuner also.

 

The title is what is the best, and the best for that setup would be the 03-04
Cobra setup. I used an Aviator for a while.

yes i understand that but 99SaleenS281 didnt need to be rude about it because you can use the cobra pumps without tank as long as you watch the gas level which hes ok with thats all

 

I'm not rich by any stretch of the imagination. Sorry if I came off as rude, but for years I always read posts like this where people spend all this money on good gear and then skimp out on a few hundred dollars at the end. If he can save up 1800 for the blower, then he can save up a few hundred for a decent fuel set up is all.

 

is the cobra pump and tank the best route to take?

 

I'm not rich by any stretch of the imagination. Sorry if I came off as rude, but for years I always read posts like this where people spend all this money on good gear and then skimp out on a few hundred dollars at the end. If he can save up 1800 for the blower, then he can save up a few hundred for a decent fuel set up is all.

yes i understand for sure that you shouldnt cheap out on fuel system but the tank is not necassary. he should get it. the power can still be made safely without it as long as he watches the fuel level thats all i was getting at

 

I had the same fuel setup (BAP & stock pump) on a 2000 GT, but still had only 30 lb injectors. It made 373 rwhp with the Vortech supplied chip (also had 3.33" pulley and exhaust). I sold it & the buyer had it tuned at the dyno and they got 397 rwhp. But with the small injectors and stock MAF, it was on the ragged edge.

...I have never heard of anyone else with the kind of set-up I'm using.
For about 20-25K miles I've been using the stock GT fuel system w/BAP and 47lbs injectors. But, my bottom end IS forged, and only putting down 393rwhp.
I never mention it to stay out of any flaming, but since it was already mentioned here, there you go.

P.S. I had a really good tuner also.