Buick 455 vs Olds 455 vs Pontiac 455

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  • krek
    Perpetually Perplexed

    Moderator
    • Apr 23, 2006
    • 2866

    Buick 455 vs Olds 455 vs Pontiac 455

    I know several members have swapped a Buick 455/TH400 in their FSJ. I went to look at a B455 today and it turned out to be an Oldsmobile 455. I know these motors aren't interchangable, but is there a significant FSJ advantage or disadvantage to the Buick vs the Olds vs the Poncho?
    Last edited by krek; 01-27-2008, 12:15 PM.
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  • billyrb
    BJ's Off-Road
    • Aug 15, 2001
    • 10032

    #2
    Originally posted by krek
    I know several members have swapped a Buick 455/TH400 in their FSJ. I went to look at a B455 today and it turned out to be an Oldsmobile 455. I know these motors are interchangable, but is there a significant FSJ advantage or disadvantage to the Buick vs the Olds vs the Poncho?
    They aren't interchangeable and don't use the same parts. The Pontiac 455 has the most aftermarket parts available as well as the least expensive. The olds has less support than the pontiac, but still a few good places out there although more expensive. The olds is a great motor and can be built for a TON of power.
    BJ's Off-Road
    [email protected]
    Your source for '63-'91 FSJ Parts

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    • krek
      Perpetually Perplexed

      Moderator
      • Apr 23, 2006
      • 2866

      #3
      Dang it... I specificially meant to type "aren't interchangable"...
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      • billyrb
        BJ's Off-Road
        • Aug 15, 2001
        • 10032

        #4
        hehehe, suuuuure ya did fingerfarts, they make you type what you mean not to
        BJ's Off-Road
        [email protected]
        Your source for '63-'91 FSJ Parts

        Comment

        • HorribleHarry
          232 I6
          • Aug 13, 2006
          • 63

          #5
          You can get a TON of oomph out of the Olds motor. There is still a decent amount of aftermarket for it since so many were used as boat powerplants.

          Perhaps an adapter plate???

          These are all good places to start for performance enhancements.
          Mondello Performance manufactures and sells quality custom Oldsmobile performance parts and engines. Call or email us today for a free quote!


          GIVE US A CALL FOR ALL YOUR OLDSMOBILE PARTS NEEDS! WE ALSO OFFER A FULL MACHINE SHOP, ENGINE BUILDING / MACHINING , DYNO ETC



          Harry
          Last edited by HorribleHarry; 01-27-2008, 01:01 PM.
          86 GW, 360-V8, NP229, Tow Package(3.73's), D44/AMC23, aux. 25 gal. fuel tank, 2.5" lift, 31"BFG AT's, dual Flowmaster exhaust w twin cats, factory brush guard, PIGNOSE transplant!, rust, shiny chrome valve covers! ...and no more woodgrain!
          89 Range Rover classic hunter (with factory standard leaky head gaskets!!!)
          87 Vanagon SYNCRO 4X4

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          • Eugene 1
            304 AMC
            • Feb 04, 2006
            • 1783

            #6
            go Buick !
            JEEP
            2005 Ram 1500 HemI

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            • Mikel
              • Aug 09, 2000
              • 6330

              #7


              1969 M715 6x6
              1963 J300 Swivel frame

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              • Eugene 1
                304 AMC
                • Feb 04, 2006
                • 1783

                #8
                Originally posted by Mikel


                nice toro. 68 ?
                JEEP
                2005 Ram 1500 HemI

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                • HorribleHarry
                  232 I6
                  • Aug 13, 2006
                  • 63

                  #9
                  66!!!
                  oh I'd be willing to swap my front teeth for an early Toronado!
                  Heck it even has my name on it!!!

                  Harry
                  86 GW, 360-V8, NP229, Tow Package(3.73's), D44/AMC23, aux. 25 gal. fuel tank, 2.5" lift, 31"BFG AT's, dual Flowmaster exhaust w twin cats, factory brush guard, PIGNOSE transplant!, rust, shiny chrome valve covers! ...and no more woodgrain!
                  89 Range Rover classic hunter (with factory standard leaky head gaskets!!!)
                  87 Vanagon SYNCRO 4X4

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                  • willam
                    350 Buick
                    • Jul 12, 2005
                    • 805

                    #10
                    I'm thinking that the deal maker or breaker for swaping into an FSJ woulld be the distributor location. Buick/Caddy is on the timing cover, just like a 360. Not sure, but I believe the rest have them located on the rear of the intake manifold like a chevy. Not a whole lot of room back there, especially when stuffing a big block under the hood.

                    Why bother with cutting the firewall anymore than necessary? Also makes maintenance easier if it's all up front and easy to get to.

                    My 2 cents, for what it's worth.
                    Last edited by willam; 01-28-2008, 03:07 PM.

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                    • Mikel
                      • Aug 09, 2000
                      • 6330

                      #11
                      Good eye... It's a '66.




                      A bit of Olds artwork

                      Last edited by Mikel; 01-27-2008, 01:44 PM.
                      1969 M715 6x6
                      1963 J300 Swivel frame

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                      • krek
                        Perpetually Perplexed

                        Moderator
                        • Apr 23, 2006
                        • 2866

                        #12
                        Sweet Toronado, Mikel!

                        I have a '69 Country Squire waiting to donate a 429/C6 and 9 inch rear to my wife's high school car (1970 Mustang Sportsroof)... put that project is years off.

                        What about the Ford 429/C6 for an engine in a FSJ? I'm assuming it would bolt up to an NP205?
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                        • krek
                          Perpetually Perplexed

                          Moderator
                          • Apr 23, 2006
                          • 2866

                          #13
                          I just don't like the idea of putting a Ford in a Jeep...
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                          • LouM
                            232 I6
                            • Mar 06, 2005
                            • 189

                            #14
                            The Buick, Olds, and Pontiac engines you're considering all had the same bellhousing bolt pattern so any one of the three will bolt up to the same transmission. The mounts and accessory brackets are another matter, though. From there on, it's just as Ryan describes. The Pontiac has the most support. I like the Olds engines myself but the Buick 455 was the only stock engine of that era to produce over 500 lb. ft. or torque.

                            Lou

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                            • mafos4471
                              232 I6
                              • Aug 07, 2007
                              • 105

                              #15
                              OK, from personnal experience Buick is EXPENSIVE to rebuild... around 3000 for everything. Definately more aftermarket for Olds, Pont, and from what I remember cheaper to rebuild, like 2000-2500. All the 455's had distributers on the front of the engine, so thats not a problem. Have fun...

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