View Full Version : Carb question
Inkdcountryboy
03-22-2007, 01:22 AM
Did anyone change there fox over to carbed? i really want to and dont know what all i need, and if i can just pull through the intank pump or do i gotta do something else? i wanna have it carbed for the first day of track, i got the heads redone,Trick flow cam,clutch, all kinda little stuff but my plugs are burning white its not getting the fuel it needs i think the f.i system on it sucks balls...cause from what i seen it costs so much to make it work with what i have....any idea or help ???
Rodeheaver's
03-22-2007, 09:39 AM
Did anyone change there fox over to carbed? i really want to and dont know what all i need, and if i can just pull through the intank pump or do i gotta do something else? i wanna have it carbed for the first day of track, i got the heads redone,Trick flow cam,clutch, all kinda little stuff but my plugs are burning white its not getting the fuel it needs i think the f.i system on it sucks balls...cause from what i seen it costs so much to make it work with what i have....any idea or help ???
i would not reccomend to pull through the intank pump, i have done this method and it is really hard on the new pump and can starve the engine of fuel, and you are right about the cost, if you are trying to race on a buggit a carb is deff the way to fly, you would need an intake, carb, fuel pump, air cleaner, and i would reccomend an msd ignition to get rid of the factory controlled electronic ignition, a carb is super easy to tune. call me if you need any help.
Inkdcountryboy
03-22-2007, 12:40 PM
i got a mallory distrib, with vaccum advance, do i gut the intank pump? what do i use for a pickup? i got a msd blaster coil on the car... i need to find a decent priced carb n intake that would work good, im running a trick flow stage one cam,shaved heads, 1.7 roller rockers..
Rodeheaver's
03-22-2007, 12:49 PM
i got a mallory distrib, with vaccum advance, do i gut the intank pump? what do i use for a pickup? i got a msd blaster coil on the car... i need to find a decent priced carb n intake that would work good, im running a trick flow stage one cam,shaved heads, 1.7 roller rockers..
you should get a 79-85 mustang tank with the correct pickup, but i have taken out the elec pump and just extended the tube to the bottom of the tank. the mallory dist is ok, but if you have a vlotage spike anywere in the system it will blow out the module, do you have adjustable rockers? if not, because you shaved the heads and are using a aftermarket cam the base circle on the cam may be diff than stock so you will need to check pushrod length and lifter preload before running the car,
Inkdcountryboy
03-22-2007, 02:02 PM
I had the clearances all checked, im good on that part, ok how much would that pickup cost??... how do i make sure not to get a spike and all that crap??? i'll work on quad's and bikes all day long but this f.i an mustang stuff got me all baffled...sounds like its easier to throw the car away and get a camaro loll j/k
Balaska347
03-22-2007, 05:45 PM
I think it would cost more to switch to a carb. You can get a fuel pump, regulator, MAF, and injectors for about $750 new and I'm sure you wouldn't have any fuel problems, and you wouldn't have to change anything else. Are you running N/A or a power adder. You can also find those parts used all over the place even cheaper. A good carb (demon or holley HP) are gonna cost you $500 - $700 and you still have to get a pump and intake. Either way its gonna cost you $$$.
Unless you want to get spanked by some mustangs I'd stay away from chevy's LOL.:sticktonge:
Inkdcountryboy
03-22-2007, 05:59 PM
i got no power adder's i wanna run nitrous, but i really dont like fuel injected, i think carb would make more power easier, a plate nos system would be cheaper too wouldnt it?? a intake shouldnt cost over $200 and $300-$400 for a carb plus whatever the fuel pump and pickup costs
Balaska347
03-22-2007, 06:10 PM
i got no power adder's i wanna run nitrous, but i really dont like fuel injected, i think carb would make more power easier, a plate nos system would be cheaper too wouldnt it?? a intake shouldnt cost over $200 and $300-$400 for a carb plus whatever the fuel pump and pickup costs
If you prefer carbs, then thats the way for you to go. I don't think there is aything wrong with carbs I just like injection. F.I. also has a NOS plate system that bolts in between the upper and lower intake. My dad runs a carb on his stang and I run injection. Its what ever your more comfortable with. Carbs you change jets, injection you turn up the fuel PSI, take your pick.
Inkdcountryboy
03-22-2007, 06:27 PM
how hard would it be to find a good used maf and stuff?? id buy the pump new
Inkdcountryboy
03-22-2007, 06:29 PM
im just looking for a easier upgrade, because i wanna build or buy a 347 or 331 this summer, and if the carb is easier to just bolt on and rejet, in stead of having to buy bigger ijectors again and again....i dunno
Balaska347
03-22-2007, 09:21 PM
What year is your car? And whats all the mods you have?
383taman
03-22-2007, 11:02 PM
I have a fresh rebuilt choke horn milled off 750 dbp holley. send me a pm.
Inkdcountryboy
03-22-2007, 11:25 PM
The car has 3:55 gears, Ram hd clutch,steeda tri-ax,underdrives,cold air intake,no smog or ac or cat's, equal shorties into h-pipe n flowmasters, i got a trick flow stage 1 cam,1.7 roller rockers, shaved heads.....msd blaster coil and cop n rotor,and 9mm ford racing plug wires...
Inkdcountryboy
03-22-2007, 11:26 PM
opps. and its a 1993 GT, also subframed
Balaska347
03-23-2007, 06:59 PM
When you said that the plug was burning white, was that while spraying it or N/A? I had more done to my car and was fine with the stock injectors, but I had a bigger pump and a fuel regulator to turn up the psi a little. I also didn't spray the car. If you are trying to build the motor mainly for NOS, I'm not the best person to help you, but if you wana go N/A I can help you with any questions.
Martin0660
03-23-2007, 07:27 PM
I agree with the others about staying EFI, but if you are set on converting, I have a Holley street dominator (single plane) intake here cheap. Its never been bolted on, but been around a while ;)
Bob Myers
Inkdcountryboy
03-23-2007, 07:31 PM
my car never had NOS on it, but the plugs are as white as a new hanes tshirt
my car never had NOS on it, but the plugs are as white as a new hanes tshirt
HAHA.
I am with Balaska here. You need more fuel pressure.
Inkdcountryboy
03-23-2007, 07:58 PM
and how much will it cost me to get more pressure? and how hard to do it ?
Balaska347
03-23-2007, 08:14 PM
If you wanted to stay EFI I would start by putting a new pump in it (255 lph $109), fuel PSI regulator and gauge ($120), and a new fuel filter because there cheap and easy to change. They are all fairly easy to change depending on your experience and tools.
You said that you had the heads shaved I am guessing that those are the stock heads. Do you know how much they took off and what compression ratio you have now?
Inkdcountryboy
03-23-2007, 08:33 PM
They took .30thousands off, i just changed the fuel filter...
They took .30thousands off, i just changed the fuel filter...
Holy smokes!!!!!!!!! Thats alot!!!!!!!!!!! HAHA I think you mean .030 In other words you have roughly 9.5:1 compression now. The fuel system is simple and cheap. Call summit and the parts will be here in a day.:awsome:
Balaska347
03-23-2007, 10:55 PM
The stock injectors should be ok I would do the pump and the regulator first. Then when you build the 347 I would go to 30lb injectors. I see you live in ruffsdale, LMM should be right down the road and they should have them in stock.
Inkdcountryboy
03-24-2007, 02:29 AM
Yea im like 3miles from LMM, id just hate to dump $200 on a pump n regulater n it not fix my issue, how much could i get a NOS system for my fi? they hard to come buy used?
Balaska347
03-24-2007, 10:23 AM
I would have to see the plugs myself, but if you are lean you have to start somewhere. If you start with a pump and a regulator, those are two things you won't grow out of. I'm assuming that you have a stock pump and regulator. I'm not trying to tell you not to go with a carb, but once you understand EFI it is simple and more efficient.
Inkdcountryboy
03-24-2007, 11:37 AM
What size pump like a 255lph?
Balaska347
03-24-2007, 11:52 AM
I would go with the 255 because they're not that much more and you will have room to grow.
Balaska347
03-24-2007, 12:04 PM
If you look in the "Automotive stuff" section for things forsale, you might be able to find things cheaper.
Inkdcountryboy
03-24-2007, 02:02 PM
im gonna stop down LMM monday, quick question tho, do i gotta drop the tank or is there a panel under the back seat to get to it ?
thelast50ho
03-24-2007, 02:14 PM
im gonna stop down LMM monday, quick question tho, do i gotta drop the tank or is there a panel under the back seat to get to it ?
you got to drop the tank but its easy to do as long as its empty
Yea but you'd be better off stayin with EFI. It makes more power and is very easy to work with, Lou at LMM should be able to help you get everything you need. And as for nitrous kits for EFI they are around the same price as carb set ups and easier with the wet kit to put in with bein able to tap into the fuel rail for fuel.
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