Announcement

Collapse
No announcement yet.

1989 454 specs & info

Collapse

Unconfigured Ad Widget

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • 1989 454 specs & info

    I was given a 454 out of an 89 suburban, gonna rebuild it, throw a carb on it and drop it in my 89 stepside. i know most of you are real negative on these later big blocks (no power) but i gotta assume that with a good set of aftermarket heads,cam,carb,
    & intake that i should get big time torque out of it. the bottom end of these motors should be fine, they were just crippled by bad heads & small cams. is that correct? I cant find any info on these motors . just earlier ones. looking for compression ratio, how many cc heads, when did the roller motors come out, i know on
    late 80's small blocks, most are machined for roller cams,are the big blocks the same? any info, and sites to go to would be a huge help thanx all

  • #2
    Re: 1989 454 specs & info

    Chamber configuration:119cc Open chamber
    Compression ratio: 7.9:1
    Intake valve diam.: 2.06
    Exhaust valve diam.: 1.72
    Go to http://www.454ss.com there is a ton of info there.

    click signature for pics
    90 454ss
    92 454ss
    08 Avalanche

    I wish people were like slinkys, fun to play with but when I get bored I can push them down the stairs.

    Comment


    • #3
      Re: 1989 454 specs & info

      how different are the ss motors from the regular motors

      Comment


      • #4
        Re: 1989 454 specs & info

        if you rebuild it right i will be better then a vortec

        Comment


        • #5
          Re: 1989 454 specs & info

          Originally posted by zapc
          how different are the ss motors from the regular motors
          90ss has the same HP, 91-93 had 25 more due to exhaust and intake.

          click signature for pics
          90 454ss
          92 454ss
          08 Avalanche

          I wish people were like slinkys, fun to play with but when I get bored I can push them down the stairs.

          Comment


          • #6
            Re: 1989 454 specs & info

            the 454 came out of a 2 wheel drive suburban, going into a 4x4.
            will it have the correct oil pan? also ive been told that the 454 flywheel should have the 700r4 bolt pattern and the turbo 400, is that true.
            this is avery stout heavily worked 700r4. should survive a while with a stock 454.
            Last edited by zapc; 04-21-2009, 06:03 PM.

            Comment

            Working...
            X