i have a 84 grend marque 302 cfi (throttle body injection). is there any way to increase fuel pressure to the injectors? i removed the cats, increased the timing, and removed the fiberglass from the muffler. i plan on installing comps xe250 cam, and install a set of e7te ported heads. any advice on getting some more power?
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Not to be rude but you should start a new thread. we would be more than happy to help you then.Originally posted by ptrgsny View Post
'90 LX 5.0 mustang
Big plans -
and so it shall be.Originally posted by 1980c10 View Post
Not sure I'd suggest camming a CFI car to be honest. They aren't very flexible, and the intake quite frankly sucks. More fuel pressure will just make it compensate by cutting the injector pulse down until you get it up so high that it just runs rich all the time. Trutfully you'd be a lot better off doing a multiport conversion or (and I can't believe I'm saying this) putting a carb on it.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousersComment
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+1 on the multi-port conversion, if efi is your thing, it is mine so Im bias LOL. But a 4bbl intake and a carb conversion is super simple and a good bang for your buck.
'90 LX 5.0 mustang
Big plansComment
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Carbs rawk. And used AFBs can sometimes be picked up very cheap. :banana:
(provided your local smog nazis will allow an injection-to-fuel-drip conversion, that is)2012 Mazda5 Touring | Finally working on the LTD again!
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I am also a fan of carbs but I like efi more better LOL. Each has its place just depends on the vehicle with me as to what I want it to have.
'90 LX 5.0 mustang
Big plansComment
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AFBs are meh. Quadrajets and ThermoQuads are where its at for small motors. If only someone would make a spread bore intake to make proper use of one on a Ford engine it would be cake.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousersComment
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I do agree on that, a spreadbore Holley might work OK too.
The strength of the AFB is primarily a cost and simplicity issue.2012 Mazda5 Touring | Finally working on the LTD again!
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Do what I did. Put nitrous on the cfi!
2011 Grand Marquis LS Ultimate Edition
Dual Exhaust w/ AP XLerator mufflers and 3 1/2" tips, Eibach 1" rear sway bar, Pioneer Head unit and speakers, 17X8 Drag DR-72 wheels
RIP 1984 2Dr Crown Vic "The Millennium Falcon"
Carbed 5.0 HO w/nitrous , Performer RPM intake, GT40P heads, E303 cam, FRP Shorties, FRP 9mm plug wires, Off-Road H-pipe, Magnaflow round mufflers, 2000 rpm stall
NA-15.78@91.21, 80hp shot-14.48@96.21Comment
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BTW, some guys at SBFtech.com were commenting that with a Holley-design carb with the right style boosters (and preferably the right overall combo, which means having a cam that gives the right vacuum signal when and where you need it), it's possible to get very good response and even economy with a comparatively large carburetor (the opposite of my carb philosophy, but then my carb is '60s technology and my combo is all mismatched with crummy factory heads and a cam I chose out of a catalog).2012 Mazda5 Touring | Finally working on the LTD again!
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Technically, your carb is 1957 technology, there, Mikey. :p
2001 Ford Crown Victoria P71 - "The Fire Engine"
1985 Lincoln Town Car Signature Series
But God demonstrates his own love for us in this: While we were still sinners, Christ died for us. Romans 5:8Comment
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they're right, but past a certain point, you gain nothing from the larger carb and it becomes more difficult to tune on the small motor. Tuned properly though, the size doesn't directly relate to fuel economy or responsiveness. Using a reasonable size carb for the combo just makes it easier to tune, though if you're a carb god you could technically make an 1180 run just fine on an application that originally needed a 550.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousersComment
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... which is another reason for a carb idiot like myself to stick with a tiny carb even though it may sacrifice a tiny bit on the top end (though probably not much considering my combo). Been fiddling with the AFB for about 4 years (that's as long as I've been using a carb), and I still feel like I'm shooting in the dark a lot of the times I open my tuning kit.Originally posted by gadget73 View Post2012 Mazda5 Touring | Finally working on the LTD again!
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