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post #1 of (permalink) Old 03-10-2004, 12:49 PM
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TBI questions - whats it worth, how easy to instal

Hey all,

I have a lead on a TBI setup and was wondering how well they work on the rocks and what they are worth. Also, whats involved in the installation.. Thanks.
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post #2 of (permalink) Old 03-10-2004, 12:58 PM
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Re: TBI questions - whats it worth, how easy to instal

I haven't built one, but I have seen a few and they work a lot better than a carb! I'm thinking of putting one in my new rig later this summer.
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post #3 of (permalink) Old 03-10-2004, 02:12 PM
 
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Re: TBI questions - whats it worth, how easy to instal

I'm not a rock crawler, but I can tell you that TBI systems work well. Torquey and responsive. You will probably want to run new fuel lines for supply and return. You will need to either modify your fuel tank for an internal pump or use an external pump close to the tank. If I were doing it over again, I'd use an internal tank pump as I find the external pump noisy.
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post #4 of (permalink) Old 03-10-2004, 02:16 PM
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Re: TBI questions - whats it worth, how easy to in

i had started to do one for my 258 before i found the 360. I had all of the pieces together, but got rid of most of them to help pay for the 360 build. tbi will run better than any carb off camber simply due to the design and laws of physics - gravity does not affect injection. plus having the computer control the timing, air/fuel mixture and idle speed makes it a bit easier to deal with in cold weather, etc. not to mention that injection gives you a bit more torque and usually better hp numbers as well.

doing this on the 305 should be cake since all of the parts are made for that engine or one of its brothers. i got all of my parts off of ebay and dont think that i went over $150 for good stuff (i hadn't bought the wiring harness yet though). i opted for an external fuel pump just because they are easier to deal with than the in tank units. you can run an external filter and pump and if you have a problem with them swap em out on the side of the road or trail.

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post #5 of (permalink) Old 03-10-2004, 05:33 PM
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Re: TBI questions - whats it worth, how easy to instal

I have had the Howell kit on my 258 for about 4 years now. I have been very impressed. The FI works much better than my old carter carb did. The only problem that I have had with my TBI is that the engine would die sometimes on deceleration. I ended up adjusting the air/fuel mixture -- essentially adjusting the idle rpms up to about 700. Other than that, I have been very pleased with my TBI.
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post #6 of (permalink) Old 03-10-2004, 06:11 PM
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Re: TBI questions - whats it worth, how easy to instal

The wiring and PROM calibration are the only hard parts to installing a TBI system on a Jeep. Just be sure to get the exact make / model / year of the vehicle your getting the TBI system from. TBI system wiring harnesses are NOT the same, there are some difference based on what the Computer number was. I sold a couple complete Chevy 350 TBI systems, including the original wiring harness without any cut wires and I marked what each and every wire went to for $475.00. I've also done complete AMC 304 / 360 TBI conversions for $1400 with external tank fuel pump and a calibrated PROM.
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post #7 of (permalink) Old 03-10-2004, 09:44 PM
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Re: TBI questions - whats it worth, how easy to instal

Hey Bri,

Its a TPI, off of a 91 Camero, 5.0L
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