85 mustang question. . .
wonderboyobe
08-04-2007, 03:03 AM
I own a 1985 ford mustang and i was feeling the need to add some power to it, But i dont really know where to start. The problem is that it is a 1985 lx confertable which it nice as far as driving goes, but stock it has very little power for a 302. The car has a 2 bbl throttle body "cfi" and single exaust, and everything else factory. From what i can tell i need more air and fuel. my computer system seems to be a little greedy with the fuel but i dont know how to get it to change without replacing with a carb, and even then i dont know what size carb would be good. . Where would you guys start out?
SkylineUSA
08-04-2007, 03:28 AM
I don't know crap about those set ups, sorry. I do know a lot of guys dump those set-ups and just go carb.
wonderboyobe
08-05-2007, 01:50 AM
well it sounds more like i need to go with the carb then.. Has any one have an idea on how large i can go without it being too big, or weather or not i should consider some long tube headers and dual exaust first?
SkylineUSA
08-05-2007, 02:25 AM
Go 600, that will give you room to grow, heck that is even overkill for even a modded 302.
speedfreak
08-05-2007, 11:20 PM
You could either get the EFI system from an '86-93 5.0 HO or go with a carburetor. Don't go any larger than 600cfm. A Weiand Stealth dual plane intake manifold would be a good upgrade. You will need a low pressure(~3-5psi) fuel pump with the carb. I'll take the CFI injectors off your hands if you get rid of them.....:grinyes:
Ditch the single exhaust no matter what. You can get '86-95 stock tubular headers fairly cheap.
Above all, set some goals for what you want. From there we can make more specific recommendations.
Ditch the single exhaust no matter what. You can get '86-95 stock tubular headers fairly cheap.
Above all, set some goals for what you want. From there we can make more specific recommendations.
wonderboyobe
08-07-2007, 02:02 AM
That raises another question, can you pass emmisions without an egr unit, because 99% of the carb manifolds i can find dont have it? or on a carb set up does it fit between the carb and the manifold, because my current one is on the manifold.
Stale Trooper
10-24-2007, 10:01 PM
I own a 1985 ford mustang and i was feeling the need to add some power to it, But i dont really know where to start. The problem is that it is a 1985 lx confertable which it nice as far as driving goes, but stock it has very little power for a 302. The car has a 2 bbl throttle body "cfi" and single exaust, and everything else factory. From what i can tell i need more air and fuel. my computer system seems to be a little greedy with the fuel but i dont know how to get it to change without replacing with a carb, and even then i dont know what size carb would be good. . Where would you guys start out?
Not to usurp any of the above info, but in the 70's, I used to race a 258 cuin AMC 6 cyl on which I used nothing smaller than a 650 cfm 4bbl and had very good results with a modified 750 single pumper vac secondaries; I used a long tube single exhaust header. I was clocked at 126MPH with this setup in a CJ-5.
In the begining, My first, and probably cheapest HP came thru headers, then carburation mods. I had big valves, and a cam to match; The cam, valves and headwork came later, and at a much higher price tag.
For your situation, I would suggest a 650 - 750 CFM 4 bbl w/ vacuum secondaries, long tube headers, free flowing dual exhausts, and a cold air intake. If possible, try to mechanically advance (IE: physically move the distributer) your initial timing about 8* AHEAD of stock for more power and mileage. Good Luck!!
Not to usurp any of the above info, but in the 70's, I used to race a 258 cuin AMC 6 cyl on which I used nothing smaller than a 650 cfm 4bbl and had very good results with a modified 750 single pumper vac secondaries; I used a long tube single exhaust header. I was clocked at 126MPH with this setup in a CJ-5.
In the begining, My first, and probably cheapest HP came thru headers, then carburation mods. I had big valves, and a cam to match; The cam, valves and headwork came later, and at a much higher price tag.
For your situation, I would suggest a 650 - 750 CFM 4 bbl w/ vacuum secondaries, long tube headers, free flowing dual exhausts, and a cold air intake. If possible, try to mechanically advance (IE: physically move the distributer) your initial timing about 8* AHEAD of stock for more power and mileage. Good Luck!!
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