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    Thread: TPI vs TBI

    1. #1
      Join Date
      Jul 2005
      Location
      Monroe,N.C.
      Posts
      56

      TPI vs TBI

      Ok my question is this.
      Run a stock Tune Port 1990 350 TPI motor, or run a 1994 TBI setup. Both will have mild cams for either fuel system. Its going in a 84 C-10 SWB truck. Taking out the extra fuel hungry 383 in favor of some drivability with a little performance. I have access to either engine, just wanted to see what "ya'll" think.

      Thanks



    2. #2
      Join Date
      Aug 2005
      Location
      Patterson, NY
      Posts
      784
      TPI.
      I think I'd rather run a carb than TBI.

    3. #3
      Join Date
      Oct 2004
      Posts
      2,624
      Country Flag: United States
      TPI. If it's for a truck with a mild cam I'm assuming you won't be revving it too hard.
      Red Forman: "The Mustang's front end is problematic; get yourself a Firebird."

    4. #4
      Join Date
      Feb 2007
      Posts
      327
      I'm sure you can get the tpi to run at least a little better. But at least with throttle body injection you can actually watch and make sure the fuel is spraying out right, or isn't leaking when the engines shut off. I don't know how you would do that with tpi, could be more trouble.

    5. #5
      Join Date
      Sep 2007
      Posts
      78
      Stock TPI set up is designed for Torque. The extra Tq would be help move the mass of a truck. The TBI is ok too, a throttle body spacer helps increase fule atomization.

    6. #6
      Join Date
      Jan 2005
      Posts
      10
      I would definitely go with the TPI, more responsive on a truck with a broader torque curve.
      Peter J.
      67 Chevelle--Pro Touring to the max
      68 Charger-- Pro Rust to the max, but I still love her. Soon to be PT Charger!!
      65 Galaxie Vert--Work in progress!
      06 H2--10.3 MPG Daily Beater!

    7. #7
      Join Date
      Jul 2005
      Posts
      202
      Country Flag: United States
      The TPI motor powerband is great for a truck. They get reasonable fuel economy too. TBI - I agree with the earlier post - might as well use a carb.

    8. #8
      Join Date
      Mar 2005
      Location
      Jackson Ms
      Posts
      1,220
      i have a stock 92 trans am tpi (305) in my 85 LWB 1/2 ton chevy truck. if i were you i would run the tpi and leave it 100% stock. it will run better and pull harder. the only bad thing about TPI is the lack of aftermarket tuning. that makes things like cams and heads a pain to deal with.
      Chris V
      SOLD





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