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266 vs 304

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  • 266 vs 304

    I got my service manual today and was quite pleased except for one thing, it doesn't mention the 266 v8. I looked on BB FAQ and read the thread on this forum about interchangability. What else do I need to know about 266 specs/repair that I can't transfer from the 304 section of the service manual? Where do I find this information?

    Thanks,

  • #2
    I've got the same issue. No 266 enginge section in the manual. I suppose I ought to call Binder Books. Maybe they can shed some light on the subject. I think the 266 is under-rated.

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    • #3
      I have no experience with the 266 but from the conversations I have been involved with the problem is no parts availability.
      No pistons rings etc.
      Hope you find more information.
      [CENTER]1994 Buick RoadMaSSter Estate Wagon LT1/4L60E. White and Woodgrain Sleeper...PCM 16188051 With SS/V4P/Custom Tune! WOT 12.9 AFR!

      1990 Chevy Suburban Silverado 5.7L 2wd ECM 1227747 HiWay Lean Cruise 18.5 MPG and 12.5 to 1 AFR at WOT!

      1972 IH 1210 Isky Cammed Balenced 345 4 speed PCM 16197427 Project!

      [SIZE=3][B][URL="http://www.gearhead-efi.com/"]GearHead-EFI.com[/URL] EFI Conversions and Chip Tuners![/B][/SIZE]
      [B]May be all you need to know about EFI![/B]

      and I still help local JustIH members (for fun) free! :cool: [/CENTER]

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      • #4
        266

        When my 304 died in the driveway, I put in a 266 of unknown year in my 70 800A with BW-11 auto.

        It was a direct bolt in and I used any 304 part I needed for the swap (dist, carb, exhaust manifolds).

        My books show different timing for different years on the 266s, but I have ended up at 5 BTDC.

        When the 304 went, I had my choice of a 266 and a 345, and I went 266 because I would obviously get much better milage! Oh well, so much for that idea.

        I would go for cubes next time.

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