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#1 |
Registered User
Join Date: Jan 2019
Location: Emmett, Idaho
Posts: 1
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Re: whos done the TBI conversion? thoughts
Last edited by Stingblob; 03-29-2020 at 10:30 PM. Reason: add text |
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#2 |
Registered User
Join Date: Jul 2015
Location: North East PA
Posts: 682
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Re: whos done the TBI conversion? thoughts
I recently bought a K10 project for a fantastic price , The engine and trans were not installed the PO had a 350 caprice police engine rebuilt to spec 350 hp ,the 700r4 that came with needed a rebuild ,the wiring was a mess ,but the truck exterior and interior and frame was done and finished very nice ,after the trans came back from a rebuild I installed the engine and trans it came with a loker floor shifter and the fuel system was also already done , it took me 4 days to get the engine to fire after much research on wiring diagrams and just trying to figure out what I had ,I called the PO several time with no help ,he did give me every receipt so I was able to get to the bottom of a lot of things ,I found the engine builders bill and called him he was very helpful ,I found out that the TBI unit was from a GM marine engine apparently if you want to build HP a Marine TBI is what you want to use , I have a lot of wiring clean up to do ,mostly on the inside , I will say I was one day away from ripping the TBI out and going to go carb but in the end I stuck it out , I have a bunch more to do and I am learning the tbi system as you guys are, its not really that hard to take on ,I found lots of wiring diagrams here and some help also .It is recommended to use a truck TBI system and pull everything and watch the years stay away from the 4l60e TBI systems they are a more difficult install because they are electronic shifted.
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#3 |
Registered User
Join Date: Apr 2008
Location: Md
Posts: 2,470
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Re: whos done the TBI conversion? thoughts
I transplanted a 93 5.7 TBI in my Blazer, I bought a wiring harness for it from Howell...... (H 242)....all tagged with plugs ready to go. After sitting for a month or more, turn the key to on, let the fuel pump kick on starts up in 2-3 seconds. Also a website called jags that run....alot of 5.7 conversions.
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http://67-72chevytrucks.com/vboard/s...d.php?t=635605 |
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#4 |
Tool Addiction=Money Shortage
Join Date: Mar 2006
Location: Grand Forks, ND
Posts: 233
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Re: whos done the TBI conversion? thoughts
I did a tbi swap over the holidays and I love it. I had some drivability issues initially, but it runs fantastic now(Was a bad vacuum leak).
I Pulled the 400 out and swapped in the 305tbi. I will be able to get some pics tomorow. The computer is in a 30cal. Ammo can on the fire wall by the brake booster. I used a stock in cab tank. I had to plum a low preasure pump to feed a external fuel reservoir with a high pressure pump in it. The high pressure pump in the reservoir feeds the throttle body. The wiring harness took the longest to adapt I have quite a few hours tied up in research and modifing it. I am getting a digi cam tomorow then I will post up.
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1967 K20 400TBI SM465/NP205 posi front, Detroit locker 4.56 rear |
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