Dilemma - Convert to Carb or stay TBI
10-28-2013, 09:38 AM
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Car: 1989 Iroc Z28 Convertible
Engine: V8 5.0 305 TBI
Dilemma - Convert to Carb or stay TBI
I have been doing a bit of work on my engine and some guy talked me into going with a MSD 8394 E-Curve Distributor which is not computer controlled. The car runs fine (it definitely improved), but the computer isn't happy. I also added an MSD Ignition Coil and an MSD 6AL. I have 1-2 people telling me to finish the computer off and go Carburetor and 2-3 people telling me to sell the distributor and put one back on the computer can control.
My engine knowledge is limited but growing, while carb sounds good to me, I am unsure of how much 'work' that will be to convert. On the other hand what do I lose if I drop TBI?
If I went back to a computer controlled distributor it would be something like Davis Unified Ignition 12620 or MSD Ignition 8366 I assume.
If I went carburetor I am not sure what I would pick.
My engine knowledge is limited but growing, while carb sounds good to me, I am unsure of how much 'work' that will be to convert. On the other hand what do I lose if I drop TBI?
If I went back to a computer controlled distributor it would be something like Davis Unified Ignition 12620 or MSD Ignition 8366 I assume.
If I went carburetor I am not sure what I would pick.
10-28-2013, 11:46 AM
#2
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Re: Dilemma - Convert to Carb or stay TBI
Why not just fix the problems with your TBI?
Is the car modified?
Is the car modified?
10-28-2013, 04:58 PM
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Car: SOLD IT. Mopar guy only now.
Engine: gone
Transmission: gone
Axle/Gears: gone
Re: Dilemma - Convert to Carb or stay TBI
yeah just keep the tbi if your engine is stock you can pull pretty good MPG out of them.
10-28-2013, 05:03 PM
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Car: SOLD!!!!!
Re: Dilemma - Convert to Carb or stay TBI
take from someone that went carbed and all the way back to tbi and loving it. got really tired of the tuning on the carb for the weather as well. likie the ecm controlling it all now. and with a really good chip in it im really happy. 22mpg isn't bad either.
10-28-2013, 09:45 PM
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Car: 94 C1500
Engine: SBC 355
Transmission: 4L60E 2800 Vigilante Convertor
Axle/Gears: 14 Bolt SF 3:73 Posi
I would go with good stock gm distributor and ignition module upgraded coil and plug wires. I run TBI through a Whipple SC, completely upgraded setup pushing 400-500 hp and have no issues with distributor.
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10-29-2013, 08:19 PM
#8
Re: Dilemma - Convert to Carb or stay TBI
While I'm not fond of carbon-core resistor plug wires, there's not a thing wrong with the OEM ignition coil or ignition module for street use. In fact, aftermarket coils and modules are frequently WORSE than the stock stuff they replace.
10-29-2013, 10:17 PM
#9
Re: Dilemma - Convert to Carb or stay TBI
Keep the TBI. Here is an app for iPhone/iPad or Android that may help you a lot with component selection. It eliminates the guessing for pump or injector flow among other cool stuff. It works for me, may work for you!
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