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Unread 07-26-2010, 02:41 PM   #1
GX310
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SBC 350 wanting to go with Factory TBI

My Jeep has a 350 sbc. IT is a 77 block with vortec heads and a serpentine belt system and I currently running with a 670 Holley Truck Avenger. I would like to change over to the factory GM TBI system. My transmission is a TH400. I am looking to purchase the complete wiring harness with computer, sensors and Throttle body. Can anyone tell me about how much $$ and I looking at for purchasing all of these components? Heck if you have one available for sell let me know. Thanks!

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Unread 07-26-2010, 03:15 PM   #2
243
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About 1000.00.

But you can buy everything you need off a 350 and modify the harness and bolt it on yourself for probably less than 200.00. I have some photos in my build thread showing the modifications to a factory harness to run TBI on my 258, you will basically do the same thing to run a stand alone system on your 350. You will need an adapter or a TBI intake.
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Unread 07-26-2010, 07:02 PM   #3
jcal73
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Look here, These are the guys that I bought my setup from. What 243 said is completely true.

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Unread 07-26-2010, 09:12 PM   #4
243
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And I would also recommend AFI and that was the direction I was headed, until I ran out of money and got brave and decided to hack the harness I already owned
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Unread 07-27-2010, 12:47 AM   #5
jeepmor
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You have three options. 4.3l V6, 350 V-8, or 454. Just grab a 350 system and be done with it.
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Unread 07-27-2010, 05:49 AM   #6
GX310
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Thank you all for the help I am getting tired of the carb scene and would like to go with something a little more updated
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Unread 07-27-2010, 05:50 AM   #7
GX310
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So I will either go with the OEM setup or the AFI if I run into enough cash
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Unread 07-27-2010, 08:13 AM   #8
Pathkiller
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Painless also makes a TBI wiring harness if you get the TBI, computer and sensors from a junkyard. Would be a pretty easy plug and play setup for not a huge outlay of cash.
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Unread 07-28-2010, 08:20 AM   #9
RangerRick
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I have what you need if you're interested. All components and an aftermarket wiring harness with computer that fits. Message me if interested in it. It was installed on my CJ but I went to a Gen II Vortec so the TBI stuff is surplus. All from a 1990/1991 Chevy pickup truck and can be used with automatic or manual transmission. Manuals included.

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Unread 07-28-2010, 02:49 PM   #10
DT5150
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this may help...

How to install GM TBI on any Chevy V8
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