Fuel Injection or Carbureted?

jtillery · January 12th, 2007, 09:22 AM

I need some advice on whether I should stay fuel injected or switch to carbureted. From my research on the forum so far it seems the general consensus is if you are running with EFI now, leave it that way. I am swapping the 5.0 and T5 from my 87 LX into a 92 LX that was originally a 4 cylinder automatic. To stay EFI I think I need to plan on swapping the entire wiring harness, and possibly the steering column and dash, since the 92 has airbags.

Until I bought the 92 I planned on staying fuel injected and bought parts to for it (mass air conversion, 70mm throttle body and egr spacer, BBK cold air intake, nitrous setup with throttle body plate). I also planned on getting a Trick Flow Stage 1 cam, and upgrading the heads/intake as soon as I could.

The car will be mainly driven on the street. It will not be a daily driver, just something to cruise in on nice days. I will also take it to the strip occasionally. The car will need to be emissions tested. For exhaust I have aftermarket shorty headers, BBK hi-flow cat h-pipe and Magnaflow cat-back system.

My main question is, do you think it would be worth the hassle to swap the wiring harness over, steering column, etc to stay with EFI? I have the complete car, so getting the parts would not be a problem. Our should I take the easy route, leave the 4 cylinder wiring in tact and just go carbed? Also, a main determining factor is what it will take for a carbed car to pass emissions testing.

Thanks

mdvaldosta · January 12th, 2007, 09:43 AM

Since you've got the entire car I'd keep it EFI, especially if emissions is a concern (which was the motivating factor for automakers moving to EFI cars in the first place).

ChrisJ · January 12th, 2007, 11:52 AM

Keep it EFI...

Darrell · January 12th, 2007, 01:49 PM

Keep the EFI.

5-0stank · January 12th, 2007, 02:08 PM

EFI ftw!

Grimmy · January 12th, 2007, 03:14 PM

Yeah, i have a '65 coupe with a 302 and a 4bbl carb. I dream of efi. That route nets you better gas milage as well as the ability to pull more power out of the engine and adjust the computers maps for daily driving or racing.

jtillery · January 12th, 2007, 05:35 PM

Allright you guys convinced me. I was hoping you would say go carbed since that would be much easier. Although with as much work as this project will be, I don't want to cut corners. I will stick with the EFI.

G-Man · January 15th, 2007, 04:41 AM

I have done the conversion from 4cy to V8 and let me tell you it is a LOT EASIER to go Carb, because the wiring harness is a pain in the butt to get to and replace. However EFI will in most cases have a lot more power behind it. It mostly depends on how long you want to spend doing this, and for me after awhile I just got fruss. and went with a 4bbl.

January 12th, 2007, 09:22 AM	#1
jtillery Regular Join Date: Nov 2006 Location: Euclid, Ohio Posts: 120	Fuel Injection or Carbureted? I need some advice on whether I should stay fuel injected or switch to carbureted. From my research on the forum so far it seems the general consensus is if you are running with EFI now, leave it that way. I am swapping the 5.0 and T5 from my 87 LX into a 92 LX that was originally a 4 cylinder automatic. To stay EFI I think I need to plan on swapping the entire wiring harness, and possibly the steering column and dash, since the 92 has airbags. Until I bought the 92 I planned on staying fuel injected and bought parts to for it (mass air conversion, 70mm throttle body and egr spacer, BBK cold air intake, nitrous setup with throttle body plate). I also planned on getting a Trick Flow Stage 1 cam, and upgrading the heads/intake as soon as I could. The car will be mainly driven on the street. It will not be a daily driver, just something to cruise in on nice days. I will also take it to the strip occasionally. The car will need to be emissions tested. For exhaust I have aftermarket shorty headers, BBK hi-flow cat h-pipe and Magnaflow cat-back system. My main question is, do you think it would be worth the hassle to swap the wiring harness over, steering column, etc to stay with EFI? I have the complete car, so getting the parts would not be a problem. Our should I take the easy route, leave the 4 cylinder wiring in tact and just go carbed? Also, a main determining factor is what it will take for a carbed car to pass emissions testing. Thanks __________________ 1992 LX 5.0 Swap Convertible - Paxton Novi - P&P Heads - Cobra Intake - Tremec 3550 - Full Aftermarket Exhaust - Many other Mods 1993 LX 5.0 Hatchback - Bondo Bandit - Nitrous Works Wet Kit - Full Aftermarket Exhaust - Suspension Upgrades

January 12th, 2007, 11:52 AM	#3
ChrisJ The Cable Guy... 2002 Mustang GT SLOW Join Date: Jun 2006 Location: Shepherdsville, Kentucky Posts: 15,400	Keep it EFI... __________________ My Junk www.myspace.com/cjobe

January 12th, 2007, 01:49 PM	#4
Darrell MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: Fond du Lac, Wisconsin Posts: 6,580	Keep the EFI. __________________ Racing in memory of Dave Bandt 11/19/69 - 3/23/08 "he's traded his wheels for wings" Professor of Natural Aspiration Thanks to: Artie at Trick Flow, Dave at Team Z Motorsports, Brian at Total Engine Airflow and Harold at Furo Racecraft

January 12th, 2007, 02:08 PM	#5
5-0stank Enthusiast Join Date: Sep 2006 Location: emmaus, pa Posts: 508	EFI ftw! __________________ 1995 GT 5-Speed: 14.4 @ 96.1mph

January 12th, 2007, 05:35 PM	#7
jtillery Regular Join Date: Nov 2006 Location: Euclid, Ohio Posts: 120	Allright you guys convinced me. I was hoping you would say go carbed since that would be much easier. Although with as much work as this project will be, I don't want to cut corners. I will stick with the EFI. __________________ 1992 LX 5.0 Swap Convertible - Paxton Novi - P&P Heads - Cobra Intake - Tremec 3550 - Full Aftermarket Exhaust - Many other Mods 1993 LX 5.0 Hatchback - Bondo Bandit - Nitrous Works Wet Kit - Full Aftermarket Exhaust - Suspension Upgrades

January 12th, 2007, 09:43 AM	#2
mdvaldosta Maintenance Man 2002 Mustang GT 11.47@120.58 Join Date: Aug 2005 Location: Valdosta, GA Posts: 3,945	Since you've got the entire car I'd keep it EFI, especially if emissions is a concern (which was the motivating factor for automakers moving to EFI cars in the first place).

January 15th, 2007, 04:41 AM	#8
G-Man Newbie Join Date: Jan 2007 Location: West Mecca Posts: 27	I have done the conversion from 4cy to V8 and let me tell you it is a LOT EASIER to go Carb, because the wiring harness is a pain in the butt to get to and replace. However EFI will in most cases have a lot more power behind it. It mostly depends on how long you want to spend doing this, and for me after awhile I just got fruss. and went with a 4bbl.

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