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4.8L Probe LS :)

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  • #1

    4.8L Probe LS :)

    Well, So as some of you know, I bought Matt Maas' RWD Probe Chassis, and three months ago I finally started to work on it. It literally sat in my driveway for nine months!

    The story started with the chassis, which I picked up for what I feel was a complete and utter steal!(thanks Matt!) $1500

    Eight months later, on a local auto forum I saw someone selling a 4.8L Chevy LS motor. HMMM..... $200

    So I started doing research on what I wanted to do with said motor, because chevy truck guys were already breaking the 600whp barrier on the stock motor(turboed of course). So, some minor parts were bought- ls1 intake, injectors, and cam, ls2 timing chain, ls6 valvesprings, and arp rod bolts. $163

    Well now the motor is internally sound for some abuse, time for an oil pan, this was tricky due to the custom steering rack going across the bottom back by the firewall. Found out that the GTO oil pans are reverse, with the sump up front-Score! $150 brand new

    I needed to do some minor milling to the oil pan, as you can see in the pics, but now it fits, like a glove! $free

    So, motor is good, top to bottom, now for a transmission. My buddy just happened to be parting out his car, so I picked up a 700R4, built, with stall, reverse manual valve body, B&M shifter, and aluminum driveshaft. $800

    I know what your thinking. Auto! WTF!?!?!? Well, let me explain myself. Sitting in my garage I have a R154 Toyota supra 5sp tranny out of an 88 turbo, and after buying the adaptor plate and bellhousing, I was already at $850, still needing a custom clutch, slave cylinder, master cylinder, and clutch pedal, which would be an extremely tight fit now, due to the roll cage. So, for ease of pain and time and money, I chose the auto.

    Now, I have the motor, tranny, now I need brains. Once you start getting into the scenes, you start to meet people and make new friends, one of mine happened to be turning his 04 GTO into a carbed motor, so I picked up his ECU and wiring harness. $275

    So, on to the little manual labor that I have done. So far the motor mounts are made, and the 12 gal fuel cell is mounted. I am in the process of ripping the wiring harness apart so I only have the sensors that I will be using. I will be buying HPtuners for tuning software, but I am biding my time looking for one on sale, cause I don't want to bite the bullit and spend $600 on the software directly from them.

    Also, doing all this work for just a 4.8 would be kinda silly, since I was already hitting 11's FWD, so obviously there is more. This motor will be turboed, using the MasterPower T70, which has been shown to push the power levels I want to run.

    But first and foremost, the car will run N/A until all the bugs are worked out.

    Sorry for the long read, and here are some teaser pics, which happen to be the only ones available right now, as I have been doing car work for other people to help get extra funds in these times.

    Thanks for looking! and there will be more pics, as soon as I finish the 3400 swap in a 93 cavy.

    On to the pics:





    Oil pan



    John

    EDIT: More pics, engine and rear end





    http://i1142.photobucket.com/albums/...4/DSCN0249.jpg
    http://i1142.photobucket.com/albums/...4/DSCN0250.jpg
    http://i1142.photobucket.com/albums/...4/DSCN0251.jpg

    Poor car out bravin the weather(just had eight inches of snow on it, but it's almost 60 degrees out!!!)
    http://i1142.photobucket.com/albums/...4/DSCN0252.jpg


    Daddy's new ride 2006 Audi A4(bought for my new daughter, EVO wasnt kid friendly)
    http://i1142.photobucket.com/albums/...4/DSCN1259.jpg
    http://i1142.photobucket.com/albums/...4/DSCN0254.jpg
    http://i1142.photobucket.com/albums/...4/DSCN0253.jpg
    Last edited by dueces; January 17, 2011, 06:19 PM.
    '93 PGT-T/S M62 supercharger,.57 trim T3/T4 turbo,
    11.992@115 Twincharged on 10psi
    11.941@111.66 Twincharged,23" Slicks, 1.749 60',14psi, spinning the clutch(123.7mph highest trap)
    RWD Probe-4.8L LS-TH400-3.25's-self tuned-in process.... Best time to date: 10.240@135.3mph, 3300lbs
    Tags: None
  • #2
    is the engine going to sit so far back like that? It for could go any farther back it could be considered a mid engine =) Glad to see someone is continuing this project. Someone has got to make a rwd probe. I understand it takes alot of work...but its not impossible
    93 Probe GT
    Its not a PROBLEM. It's a PROBE LUM

    http://i227.photobucket.com/albums/d..._5571185_n.jpg

    Comment

    • #3
      Dueces your the man! Looking forward to following your progress. I kinda wanted to add some support bars like you got there going to the strut towers but thought what damage it would do to my Teins if I hit something at a high rate of speed. Hey want to ask, do you have access to a machine shop, not that I need anything, just curious as this would net a greater chance of you finishing this.
      Last edited by mac1; December 30, 2010, 01:05 AM.
      1993 Mercury tRacer :Vitara & mFactory: In progress 2020
      1994 Mercury TrAcer Wagon : '02 SPI swap : sold
      2014 Factory Five 818s: sold
      2000 Lotus esprit v8TT : 1st v8 on MS3x, ls1 coils,h20 injection
      1997 Nissan 200sx 1.6L : 35-39mpg the daily

      Comment

      • #4
        And I thought the project was six feet under! Great to see you've made progress!! Keep your motivation high and try to finish this please! Good luck.
        94' Probe GT ZE with most of the bolt-ons and some minor modifications
        http://s298.photobucket.com/albums/mm266/ollibeib/PGT/ - Pictures of my PGT

        Comment

        • #5
          awesome build man. keep it up!
          1988 Mazda 323 Sedan - All motor KL. 11.5:1 forged, Interprep cams and valvetrain, ITBS..

          Comment

          • #6
            Originally posted by mac1 View Post
            Hey want to ask, do you have access to a machine shop, not that I need anything, just curious as this would net a greater chance of you finishing this.
            Yeah, I grew up with a guys kids back in my home town, and he has conventional machines that he WANTS me to keep using. He doesn't get out to use them much because he is too busy at work. So whenever I have something to machine I just give him a call. It's not a full machine shop, but close.

            And yes, it will sit where it is in the engine bay. These are pics of the motor mounted in place. I actually took these pics when I was getting ready to make a tranny mount for the toyota tranny, but it will be the same location regardless.

            Also one thing I forgot to mention, all LS motors mount the same way, so if the 4.8L Turbo isn't enough, I can always build a 6.0L with 6.2L Heads and boost that! That would be a $1000 version of the 6.2L that comes in the 2010 Camaro SS

            The 4.8L is the smallest of the LS motors, the 5.3L is the same as the 4.8, only it has a 9mm longer stroke, then the 5.7, 6.0, 6.2, and even the mighty 7.0 and 6.2 supercharged......


            Thanks for the responses!

            John
            Last edited by dueces; December 30, 2010, 04:02 AM.
            '93 PGT-T/S M62 supercharger,.57 trim T3/T4 turbo,
            11.992@115 Twincharged on 10psi
            11.941@111.66 Twincharged,23" Slicks, 1.749 60',14psi, spinning the clutch(123.7mph highest trap)
            RWD Probe-4.8L LS-TH400-3.25's-self tuned-in process.... Best time to date: 10.240@135.3mph, 3300lbs

            Comment

            • #7
              Very nice work JOHN! Maybe take some better pics .
              mods: Custom intake manifold, Water to Air Intercooler, jands safeguard, pacesetter headers, borlacatback, EATON M62 SUPERCHARGER,millenia s injectors, megasquirt, mx3 fly,ngk wires, Built engine with ze heads and cams,electric exhaust cutout, methanol injection, quaife lsd, and 9-10 psi.
              Old 160k mile engine dyno result: 245whp 227 ftlbs tq best de 1/4: 13.80 at 103.28mph with a 60' of 2.170 on 6psi. GONNA BE QUICKER SOON!

              Comment

              • #8
                Awesome build!!
                '96 PGT-R|MTX swap|CM flywheel w/sprung 6puck|AVC turbo kit|T3/T04e .50A/R|Eibach pro kit|(F)Tokico 5-ways|(R)Tokico blues|King6 eng. mnt's|R-R STS w/bushings|R-R crank pulley|TAYLOR bat.kit|Autometer Ultra Lite OP/water/volts/boost gauges|AEM wideband|Aeromotive A1000|KVR cross-drilled F&R, KVR carbon fiber pads F&R|Goodridge brake hoses

                Comment

                • #9
                  Originally posted by mattm View Post
                  Very nice work JOHN! Maybe take some better pics .
                  Better pics will come, those were just what I had on my phone. I am not a picture person, but now that the block is painted all nice and what not, I'll get some better pics.

                  I forgot to mention that the roller chassis came with a 9in rear end, complete with gears and axles, just incase anyone was wondering what rear it had.

                  Oh, and Extreme props to Mr Maas for the design of the engine bay!!! the top radiator support is removable, making for about a ten minute motor change, Ha Ha.
                  '93 PGT-T/S M62 supercharger,.57 trim T3/T4 turbo,
                  11.992@115 Twincharged on 10psi
                  11.941@111.66 Twincharged,23" Slicks, 1.749 60',14psi, spinning the clutch(123.7mph highest trap)
                  RWD Probe-4.8L LS-TH400-3.25's-self tuned-in process.... Best time to date: 10.240@135.3mph, 3300lbs

                  Comment

                  • #10
                    check out sikky motorsports. thats who made most of the LS stuff we used when we swapped a 6L ls into my friend 95 240sx. the headers they sell for the 240sx will probably fit pretty good in the probe. the oil pan they sell would have been a good purchase too. it offers more clearence then even the GTO one.
                    PaTricK
                    ~ 92 PGT, 97 KL MTX 626, 05 Mazda6, 13 Mazda CX9, 09 Kia Sportage 4x4 v6 ~

                    Comment

                    • #11
                      Don't need headers. I will be using the stock truck logs, reverse so they face forward. It won't be NA for long, so I will just route the piping like I would turbo, just without the turbo.

                      As for the Oil Pan, After I milled it, there really isn't anything that can have better clearance, it's less than two inches from the bottom of the block, IIRC.

                      They do make bad ass kits for the 240's though, but I plan to make everything that I need myself.
                      '93 PGT-T/S M62 supercharger,.57 trim T3/T4 turbo,
                      11.992@115 Twincharged on 10psi
                      11.941@111.66 Twincharged,23" Slicks, 1.749 60',14psi, spinning the clutch(123.7mph highest trap)
                      RWD Probe-4.8L LS-TH400-3.25's-self tuned-in process.... Best time to date: 10.240@135.3mph, 3300lbs

                      Comment

                      • #12
                        so went will it run lol cant wait tell next year to come up and see it and make some runs on my new setup
                        http://valid.canardpc.com/cache/banner/2653387.png

                        Comment

                        • #13
                          I hope to have it running N/A by the middle of february, then I will have plenty of time to build the turbo setup.
                          '93 PGT-T/S M62 supercharger,.57 trim T3/T4 turbo,
                          11.992@115 Twincharged on 10psi
                          11.941@111.66 Twincharged,23" Slicks, 1.749 60',14psi, spinning the clutch(123.7mph highest trap)
                          RWD Probe-4.8L LS-TH400-3.25's-self tuned-in process.... Best time to date: 10.240@135.3mph, 3300lbs

                          Comment

                          • #14
                            Damn thats nice work so far. Everything sounds to be coming together pretty well. Cant wait to see the end result! Gonna be FAST!

                            I think I remember Maas saying that only the auto trans would fit but dont remember why. You think you could have got a manual to go with that motor?
                            95 PGT ZE boosted so custom SOLD still dreamnt about
                            05 Altima SE-R 6spd
                            04 GSXR 600 PIC
                            Stealth RT Twin turbo

                            Comment

                            • #15
                              Can you take some pics on how the rear is installed? I would love to see that. One day i will get to do a project like this.
                              Here is the 96 gt turbo No more leaks and running great 270whp 259 torque 8psi

                              Comment

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