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Author Topic: 4.3l wiring  (Read 1706 times)

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66cobra

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4.3l wiring
« on: Oct 25, 2008, 06:29:08 AM »
has anyone used the affordable fuel injection wiring for a tbi setup.seems to be more reasonable than the howell and painless.I've used the painless on my cobra project and it was good but thought to be too a little overpriced for what i got
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JamesD

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Re: 4.3l wiring
« Reply #1 on: Oct 26, 2008, 09:20:07 AM »
Just use the factory 4.3 harness. That is what I'm doing.

James
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AaronB

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Re: 4.3l wiring
« Reply #2 on: Oct 26, 2008, 12:16:53 PM »
Quote from: JamesD on Oct 26, 2008, 09:20:07 AM
Just use the factory 4.3 harness. That is what I'm doing.

James

I am going to do the same, but I have the throttle body motor, not the vortec.
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Re: 4.3l wiring
« Reply #3 on: Oct 26, 2008, 01:24:27 PM »
Ditto, if you have a factory harness and aren't afraid of a few diagrams, and lots of :beer: you can save some cash on wiring and spend it with Marlin instead. I just got my '94 4.3L Vortec on the road about a year ago and the wiring wasn't really that bad.  I bought a factory GM manual for my donor vehicle and a factory Toyota Wiring manual for my '86 Toy, added a couple fuses, and connected the dots.  One other thing you'll want is the Diagnostic Com port usually located under the dash on the driver side as part of the dash harness, just cut off as much wire as you can and splice the plug wires into the GM computer.

I probably have enough information laying around to create a simple "how to" write up if I only could find the time.  Good Luck, If you decide to use the factory harness and have any questions, post up and I'll see if I can help.
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BLACKDOG

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Re: 4.3l wiring
« Reply #4 on: Oct 26, 2008, 09:24:32 PM »
contact werty, he's been splicing together 4/3 harnesses to work well with the toyota harnesses for a while.  I think he's even gotten to the point where he is doing it for other people, but I'm not positive.
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66cobra [OP]

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Re: 4.3l wiring
« Reply #5 on: Oct 28, 2008, 05:57:03 AM »
thx for the tip,i'll look at the factory wiring more closely.I'm just woundering if its worth the arspain for 250$ savings.any of you can give me an idea of how you like the performance of the 4.3 I just rebuilt mine its tbi full roller balanced 9:5-1 comp and the edlbrk.performance package.should be @ 225 at the fly .was going to go with v8 but recommended not to.hoping i'm making the right move as I am a horse power junkie
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4RunnerChevy

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Re: 4.3l wiring
« Reply #6 on: Oct 28, 2008, 06:19:06 AM »
I use a modified factory harness.  Why not save a buck and go that route ?
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