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Old 12-29-2010, 12:06 AM   #1
bobwires
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History of the 4.3

Hello all

I'm in desperate need of some definitive information about my 4.3. My '97 Blazer has a W engine, and it's shot. rod knocking and it's got 180,000 miles. about 1/8" of slop in several rod bearings...

I need to know what years they had the same engine setup so I can find a donor. I believe I remember seeing somewhere it was '97-02, and '03 things changed.

Is there block numbers to look for, or just any S10's of particular model years?\

many thanks in advance.
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Old 12-29-2010, 12:16 AM   #2
ofnaman
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Re: History of the 4.3

Hope this helps:
http://www.s10forum.com/forum/f107/t...3-info-131868/
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Old 12-29-2010, 12:21 AM   #3
bobwires
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Re: History of the 4.3

that's a great bit of info there, but was taken from a book written in '00..... doesn't have any more than that.

Was the '99-02 the same as '96-98?
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Old 12-29-2010, 02:06 AM   #4
BarryB
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Re: History of the 4.3

Quote:
Originally Posted by bobwires View Post
that's a great bit of info there, but was taken from a book written in '00..... doesn't have any more than that.

Was the '99-02 the same as '96-98?
No there are subtle changes for the years you mentioned. It has some to do with sensors. I don't remember the full details. I was trying to do something similar back awhile ago. I ended just getting another motor form the same year. Saved myself alot of hassle and aggrovation.
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Old 12-29-2010, 02:40 PM   #5
bobwires
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Re: History of the 4.3

gotcha

thanks Barry
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