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1992 Silverado. With new motor

Tiny
SARGENTWOODY
  • MEMBER
  • 1992 CHEVROLET SILVERADO
So i've got a new motor in my truck.
Its a 1992 Silverado Z71 350 bored 40 over.
fuel injection (throttle body)
5 speed manual trans
ever since ive gotten it back its ran a little sluggish, not really bad, but for a remanufactured motor with all new insides it seems to me it should run smooth as can be. Now, all my sensors on the motor are still from the 305 that was in before. Could that have something to do with it. I also need to replace my egr valve, could that have something to do with it also.
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Saturday, August 18th, 2007 AT 3:56 PM

2 Replies

Tiny
SARGENTWOODY
  • MEMBER
  • 20 POSTS
Also, the motor has about 4500 miles on it.
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Sunday, August 19th, 2007 AT 11:55 AM
Tiny
INDYUKE
  • MECHANIC
  • 416 POSTS
Did you change out the engine managment computer or have it reflashed? That will really mess with the new engine if you still have the computer programmed for the other one.

I think a lot of the sensors are the same, but just to be safe you should check the part numbers.
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Monday, August 20th, 2007 AT 1:39 AM

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