Chevy Blazer Engine swap

nmartnmart Member Posts: 3
would a 1989 4.3 FI V6 be usable replacement engine for a 1997 4.3 v6 vortec engine. could a engine swap be done, are the bolt patterns the same for the tranny. OR will the be problems swapping engines thanks for any info you can give me


  • duntovduntov Member Posts: 133
    It is easier swap to stay with the same generation engine and engine accessories.. S/T-10 Blazer, Generation 1: 1983-1994 .... Blazer, Generation 2: 1995 - 2005. In other words replace your 1997 engine should be replaced with Generation 2 engine.
  • rfletcherrfletcher Member Posts: 25
    Have had a very small leak for long time. This week became, guessing, pint in one week. Believe it is crankshaft seals, front and rear. No evidence of burning oil. Can someone tell me what is involved in replacing the seals. Engine runs good. Oil pressure steady around 40. I would like to keep the truck but at 190,000 miles, wonder about the cost effectiveness of maintaining it. Trans. replaced about 20,000 ago. Complete new AC this summer. New front axles complete w/ CV joints this summer. New radiator last year. Seems like a lot but not as much as a new one. All opinions appreciated.

  • dbuseydbusey Member Posts: 1
    What year range can I fit my 4.3 engine into from my 2002 Chevy Blazer LS 4x4?
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