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I want to mate a BOP engine with 1986 5 speed from a Trans Am

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  • I want to mate a BOP engine with 1986 5 speed from a Trans Am

    I want to adapt this 5 speed to a Buick 455

    Already have BOP bellhousing and manual flywheel. Also have complete Trans-Am donor car....

    Will all this just bolt up OR ?

    Thanks for the help
    Dave

  • #2
    I can't see through the internet to what you're gesturing to....

    however, if it's a t-5 then yes, it should all bolt right up (as long as you have the correct spline pressure plate)

    that said

    a t-5 behind a 455's torque will go boom pretty quickly.
    Doing it all wrong since 1966

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    • #3
      GM made a T-5 with a BOP bell in the 70's. As far as I know it will work with newer T-5's too.
      This guy has a whole T-5 for sale for $25 on my local craigslist.
      I was thinking about buying it for parts..


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      • #4
        David has these parts and in LSR you don't have to stress them like you do in drag racing. The car has been running an auto but manuals are better for LSR for sure. As we get more serious we may need more trans but right now the idea is to get up to bat - we have a couple of new (to LSR) drivers who need to get their feet wet.

        The tough part may be to fit in the pedals. The foot well is tiny as the engine was moved back at least a foot or more and foot well space is taken up with the dog house. In the past they drove the car with the accelerator on the other side (to the right) of the dog house and that may be the best solution. It all becomes the art of the possible.

        Dan

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        • #5
          I can relate to his issue
          Doing it all wrong since 1966

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          • #6
            Your foot well is positively spacious compared to the Avanti! Maybe David will post up a pic of the situation (no, NOT his abs). The car has a hand brake already (it's a lever to the right of the driver) but it's still cramped. No doubt all can be made to fit.

            Dan

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            • #7
              hmmmm, you're a hard sell
              how about this footwell?



              and seriously, I neither to see David's abs nor the reason why you know of his abs. What happens on the road, stays on the road!
              Last edited by SuperBuickGuy; November 1, 2012, 01:59 PM.
              Doing it all wrong since 1966

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              • #8
                Hope David posts pics of the footwell. Does not exceed 8".

                As far as the abs in question. I have none. There's MUCH more of David than of me. From there on I'm speculating. No shared rooms!

                Dan

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                • #9
                  A lot of Buick 3.8's in Monzas / G-body's / Camarobirds had a Saginaw 4 speed behind them, which I think will get you a Tremec sized bell housing trans pattern. I'm not sure who's 5 speed they used in the late 70's, it may have been a t5... too lazy to look. I believe that is classic BOP block side bellhousing pattern bell anyway.

                  Bangshifting them is what tears the hell out of them. I've seen them live behind nitroused hotrodded 302 making 450+ torque and third is the part that seems to go, mostly from missed 2-3 shifts. Take it easy on that shift and it will make it in a light car. I've seen plenty of Foxes with wheels up launches with T5's. For LSR a dog faced gear set may work long term. Liberty or G-force...

                  Late model T5's from Mustangs have a longer input shaft - something to look at too I guess. Fords and Chevy's are 10 and 26 spline but clutches shouldn't be hard to get either way.
                  Last edited by Beagle; November 1, 2012, 06:28 PM.
                  Flying south, with a flock of bird dogs.

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                  • #10
                    Doesnt Wilcap still make adapters?
                    BS'er formally known as Rebeldryver

                    Resident Instigator

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                    • #11
                      Brendtsen's are the gurus of adaptors these days. High probability they have something though I haven't looked. Probably should do that. The V6 bellhousings may do the trick but we'll need a scatter shield per the rules.

                      Went out on Bendtsen's website (no "r" in Bendtsen's). They DO make several BOP adaptors and some REAL weird-os. Want to put a 4L60E behind your Hudson Six? They'll fix you right up.

                      Dan
                      Last edited by DanStokes; November 2, 2012, 02:26 PM.

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                      • #12
                        Originally posted by DanStokes View Post
                        Your foot well is positively spacious compared to the Avanti! Maybe David will post up a pic of the situation (no, NOT his abs). The car has a hand brake already (it's a lever to the right of the driver) but it's still cramped. No doubt all can be made to fit.

                        Dan
                        Dan,

                        The car got pushed into the back of the shop but as soon as I have time I will post some pics....

                        They did run the stude engine with a 4 speed...

                        One combo I was considering was a 455 buick engine I already have Dyno at over 500 hp , I have a BOP scatter-sheild and 400-455 manual flywheel.....Have complete 5 speed in a 3rd gen trans-am. I thought since you do not shock a trans much this might be a workable combo for Ohio...????

                        .

                        I swear this engine was already yellow

                        .
                        Attached Files
                        Last edited by rack4u; November 11, 2012, 06:36 PM. Reason: no pics

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                        • #13
                          WOW! You've been cleanin'!

                          As far as the trans - all we can do is try it. Worst case is we'll need something stronger but I think there's a chance at 500-600 HP and reduced shock load (compared to drag racing) it'll live a while. Try it and see, I'm thinking.

                          Dan

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                          • #14
                            Originally posted by DanStokes View Post
                            WOW! You've been cleanin'!

                            As far as the trans - all we can do is try it. Worst case is we'll need something stronger but I think there's a chance at 500-600 HP and reduced shock load (compared to drag racing) it'll live a while. Try it and see, I'm thinking.

                            Dan
                            Kinda what I think too.. As long as you don't disengage the clutch and hit the throttle hard, it should live
                            Case in point..Saginaw trannies.

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                            • #15
                              T-5's aren't supposed to live behind L98 350's , Mine was 10 years used before I stuck it in my car. Now I don't do alot of dropping the clutch from a dead stop but I do hit 2,and 3 pretty hard. And mine isn't a world class. I have 345 foot pounds of torque. I think you'll be fine.
                              Previously HoosierL98GTA

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