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89 blazer 4.3.. 350 tbi mod?

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Old Oct 25, 2008 | 06:22 PM
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Default 89 blazer 4.3.. 350 tbi mod?

ok i've seen it mentioned before that people take a tbi unit off of a chevy 350 and use it for their 262. (4.3) my question, is it a direct bolt on application or do i need an adapter plate, etc. also, will a 262 tbi spacer work with the 350 tbi? or even better, will a chevy 350's throttle body spacer work on the 262 manifold. also, any wiring issues, etc?
 
Old Oct 27, 2008 | 06:00 PM
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Default RE: 89 blazer 4.3.. 350 tbi mod?

c'mon, i know some of you have some info on this... any help?
 
Old Oct 27, 2008 | 07:23 PM
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Default RE: 89 blazer 4.3.. 350 tbi mod?

Do you think you need the additional fuel flow? What have you done to your engine where you think this will help?

It should physically bolt up, however, the PCM may not be able to turn down the injector pulse width appropriately to maintain the proper fuel/air mixture on the smaller engine.
 
Old Oct 27, 2008 | 08:53 PM
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Default RE: 89 blazer 4.3.. 350 tbi mod?

I thought people used 454 TBI units, but I don't know any details on it.
 
Old Oct 28, 2008 | 12:50 AM
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Default RE: 89 blazer 4.3.. 350 tbi mod?

i haven't done anything yet. im trying to get as much info as possible. i was just wondering if it would bolt right up. if i swap out a 350 tbi then i have room to grow. fipk, edelbrock intake manifold and cam, shorty headers, dual 2.25" exhaust, maybe bore her 60 over and throw in the 60 over summit rebuild kit. i just need to know what i can do. thanks guys
 
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