305 TBI TO 350TPI SWAP

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Dec 16, 2007 | 11:52 AM
  #1  
HELLO- I WOULD LIKE TO KNOW WHAT IS INVOLVED TO TAKE OUT A 305 TBI IN A 1989 RS AND INSTALL A 1987 350 TPI. IS THERE ANTHING SPECIAL I WOULD HAVE TO DO. THANK YOU AND ALL HELP GREATLY APPRECIATED. HAPPY HOLIDAYS , JOHN SORRY- I HAVE ANOTHER QUESTION REGUARDING THE SWAP. WOULD IT BE EASIER TO PUT AN OLDER 350 CARBURATED IN THIS CAR? IF SO WHAT IS INVOLVED? THANKS AGAIN.
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Dec 16, 2007 | 02:04 PM
  #2  
Some will say carburetor is easier, I don't think I'd say that.

Remove the engine, harness, and ECM, put in TPI engine, harness and ECM. Drop the fuel tank and put in a TPI pump.
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Dec 16, 2007 | 10:12 PM
  #3  
Re: 305 TBI TO 350TPI SWAP
First, please do not post all in capital letters. Its bad manners.

Second, there is a tech article on this website that will get you started.

Third, there are hundred of threads on this forum that talk about how to do it, so search and the world will be yours.
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Dec 17, 2007 | 05:08 AM
  #4  
Re: 305 TBI TO 350TPI SWAP
so sorry- i didn't mean to upset anybody. i'm not a typest. john
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Dec 17, 2007 | 01:00 PM
  #5  
Re: 305 TBI TO 350TPI SWAP
ull need a tpi fuel sender and High-Pressure 255L/Hr integral Walbro pump, is a good new fuel pump. um the body fuel lines are gonna b ok, and if u can find a 350tpi just get the wiring harness comp, and obviously the motor aha. and air lida and all that crap. the radiator should be fine from ur 305. and use the fuel lines from the 350, they run from the body fuel lines to the fuel rails , jsut fyi 5/16 of an inch diameter of the return line and the delivery fuel line is 3/8 of an inch. oh and if ur gonna be running an auto trans get a detent cable for the 350 tpi, and the tpi throttle cable!!!!! and of hosing like ps and ac can convert over, and obviously water hosing the main out let water hose youll have to buy it is diffrent from the tbi or just use the one off the 350 tpi. oh and a nother use ful tip keep in mind where VACumme lines go, like to the break master cylinder, or the carbon canster, and other stuff like that



i belive that is it if u got any question feel free to drop me a line good luck
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Dec 17, 2007 | 02:03 PM
  #6  
Quote: [FONT=Arial]ull need a tpi fuel sender...
The sending unit itself is the same. Only the pump is different. All of the lines on the car itself are the same.
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Dec 17, 2007 | 02:21 PM
  #7  
Re: 305 TBI TO 350TPI SWAP
thanks for the info. sounds like it may be easier to use an old carburated 350. what do you think???????????? lmk john
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Dec 17, 2007 | 04:09 PM
  #8  
I think you are trading one set of problems for another. And, the disadvantages of carb go on forever, while the inconveniences of the TPI swap occur only once.
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Dec 17, 2007 | 04:35 PM
  #9  
Re: 305 TBI TO 350TPI SWAP
a good question to ask would be what are your goals for this car? Will it be a daily driver? What are you trying to build here?
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