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350 to 454 swap, anybody done this?

Discussion in 'The Garage' started by bluechevy, Mar 30, 2006.

  1. bluechevy

    bluechevy Newbie

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    I swapped my 350 in my 92 chevy pickup with a 454. I changed the sensors that needed to be changed and I got a custom chip burnt but it still won't run right. It has really high idle (1700 rpm) and when I put it in gear it just hunts and it has no throttle response. I've tried almost everthing I can think of and I'm pretty well out of ideas. Anybody done this before and can help me. I'd really appreciate any help or ideas.
     
  2. JpEater

    JpEater 1/2 ton status

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    Injectors are different for the two engines. With the BB on SB injectors it would be lean and that could be causing your high idle. A computer swap may be necessary but im not sure about that. Have you hooked up to a scanner and watched the data? That will tell you a lot.
     
  3. 1-ton

    1-ton 1/2 ton status Premium Member

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    Another thing you could try is use this web sites search function using the term "IAC".
     

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