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    #1

    Manual Transmissions Revisted

    I saw another 80's F-series on eBay last night with a manual trans and it got the gears turning in my head so to speak. Granted a truck transmission won't shift as smooth as a T5 it will hold up to more power without needing any upgrades. I looked around an the trans is a mazda built M5R2, also used in the thunderbird super coupe. Both the super coupe and F-series trucks can be found for cheap when you look around online.

    If I remember correctly freshmeat blew out the rear in his car, but the F-series and SC use 8.8 rears so I should be safe to assume a box rear will last for at least some time.

    I am looking at the gear ratios right now, and I would bet that I could use my 3.27 rear and still get awesome acceleration, something compareable to swapping it out for a 3.55?

    The SC engine or 302 out of the F-series would also be useful for swappage...
    Last edited by nitroracer; 03-04-2007, 04:30 PM.
    -Matt
    1968 Fairlane 500 - 1998 Camaro Z/28
    Tags: None
    #2
    Update:

    Shifter location on Transmission makes the truck trans more desireable.

    M5R2 From Truck


    M5R2 From SC
    -Matt
    1968 Fairlane 500 - 1998 Camaro Z/28

    Comment

      #3
      Could the shifter location simply be changed from the tailshaft to the center? If so, I imagine the gearing in the SC trans would probably be better for you.
      86 Lincoln Town Car (Galactica).
      5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

      91 Lincoln Mark VII LSC grandpa spec white and cranberry

      1984 Lincoln Continental TurboDiesel - rolls coal

      Originally posted by phayzer5
      I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

      Comment

        #4
        Shifter location on the truck would be worse, it would come up right in front of your radio and heater controls. you'd be reaching over quite a bit to shift. Truck trans would most likely also have granny low 1st gears.

        If you have bucket seats the shifter location for the SC M5R2 would be perfect.

        2009 Ford F-350 6.4 powerstroke diesel. 1977 Ford F-150 built 300 six, 5 speed trans. 1976 MG MGB roadster, 359w, t5 5 speed. 1996 Kawasaki ninja ZX6R.
        My rod is glowing, my bead is clean, my middle name is acetylene

        Comment

          #5
          With a truck style shifter I think it would be ok, compare the depth of the dash on the truck with that of one out of our cars.

          The SC M5R2 with its shifter would probably fit well too.

          -Matt
          1968 Fairlane 500 - 1998 Camaro Z/28

          Comment

            #6
            Jusdging by that pic of the truck, I would think the SC trans would be a better bet. How is the strength of the M5R2 from the SC?
            Nick
            88 Colony Park LS
            G-pa's old car, but he's cruisin around heaven in his 69 wagon now
            Future plans:Semi HO conversion, or Explorer motor swap, shift kit, PI springs and sway bars, KYB-GR2 shocks

            Comment

              #7
              When I was reading it was said that ford used the M5R2 in the supercoupes over the T5 because it could handle the torque better. The guys on TCCOA know about T5 vs. M5R2, time to head over there.
              -Matt
              1968 Fairlane 500 - 1998 Camaro Z/28

              Comment

                #8
                The sc trans got hydrolic clutch setup. hate that shit
                1999 CVPI
                Old Rides
                1988 Ford Mustang GT (trickflow stage 1)
                1989 Mercury Grand Marquis LS (5.SLO)
                1989 Ford Thunderbird SC (3.8 Supacharged)

                Comment

                  #9
                  I believe both the SC trans as well as the Truck trans are both hydrolic, aswell have an internal slave cylinder.... it appears as what gadget was saying that swaping the mounting points of shifter and tailshaft section. it also appears that the SC trans tailshaft is longer.
                  1987 MGM 126K 2" True Duel flowmaster 40's 3" tipped exhuast, Tinted 20% all way round, individual bank A/F guages, tach.

                  Comment

                    #10
                    I have looked into this swap, well, manual trans.

                    I am actually going to buy a Tremec TKO with my tax return. The F150 clutch setup with the hydralic is a good setup. I will have to see if the firewall has enough space to mount the F150 master cylinder.

                    Stay tuned.
                    1983 Grand Marquis 2Dr Sedan "Mercules"
                    Tremec TKO conversion, hydraulic clutch, HURST equipped!

                    Comment

                      #11
                      This website maybe posted on here somewhere but it should be in this tread its well suited. gear ratios of Ford tranys both auto and manual

                      http://www.vibratesoftware.com/html_...in.htm#5%20Man
                      1987 MGM 126K 2" True Duel flowmaster 40's 3" tipped exhuast, Tinted 20% all way round, individual bank A/F guages, tach.

                      Comment

                        #12
                        Truck rear carriers are beefier and used 31 spline axles. MUCH stronger than a box axle. SC used an independant rear setup. I don't know much about it.

                        A 2 door wieghs in quite a bit less than a wagon, and has a lot less over the rear, so it will probably last a bit longer.
                        Builder/Owner of Badass Panther Wagons

                        Busy maintaining a fleet of Fords

                        Comment

                          #13
                          The 8.8 axle is a VERY strong rear-end, the weak link in the assembly is the 28-spline axles. The trucks use a 31-spline carrier, which is, as mrltd mentioned above, much stronger.

                          With a box, the numbers are going to be different, but with a Mustang, typically anything much over 300RWHP, we like to have the upgraded axles and carrier. The 31-spline stuff in "Mustang Land" is stronger than the stock block by a wide margin, and I know a couple of guys making well over 500RWHP with the 31-spline stuff, making routine passes down the drag-strip without issue.

                          The SC and Cobra rear carriers are still 8.8's, but they use half-shafts instead of axle tubes. They are completely different from each other, but are both 8.8 IRS. I am scoring a diff cover off of one of them this summer because they are aluminum and "girdled" so they look really sassy
                          1989 Town Car Cartier: 3G Alt. Upgrade, Mark VIII Electric Fan, Police Interceptor Suspension, 40-series Flows, loaded. HO+ Conversion: E7 heads, Cobra 1.7RR's, Explorer intake, 65mm TB, FMS "E" Camshaft, 4-hole 19lb/hr injectors, A9P ECM, 76mm C&L MAF, BBK CAI. 338,000Km, stock bottom-end.

                          Comment

                            #14
                            Originally posted by OVERKILL
                            The 8.8 axle is a VERY strong rear-end, the weak link in the assembly is the 28-spline axles. The trucks use a 31-spline carrier, which is, as mrltd mentioned above, much stronger.

                            With a box, the numbers are going to be different, but with a Mustang, typically anything much over 300RWHP, we like to have the upgraded axles and carrier. The 31-spline stuff in "Mustang Land" is stronger than the stock block by a wide margin, and I know a couple of guys making well over 500RWHP with the 31-spline stuff, making routine passes down the drag-strip without issue.

                            The SC and Cobra rear carriers are still 8.8's, but they use half-shafts instead of axle tubes. They are completely different from each other, but are both 8.8 IRS. I am scoring a diff cover off of one of them this summer because they are aluminum and "girdled" so they look really sassy
                            Explorer's also use IRS... I have a nice big aluminum cover off of one sitting in the shed.

                            Another wagon had an issue with the 8.8 rear. It blew the pinion and carrier out the back of it. This is a 300+hp 302 with a wide ratio AOD behind it. It blew on the 1-2 shift.
                            Builder/Owner of Badass Panther Wagons

                            Busy maintaining a fleet of Fords

                            Comment

                              #15
                              Originally posted by mrltd
                              Explorer's also use IRS... I have a nice big aluminum cover off of one sitting in the shed.

                              Another wagon had an issue with the 8.8 rear. It blew the pinion and carrier out the back of it. This is a 300+hp 302 with a wide ratio AOD behind it. It blew on the 1-2 shift.
                              Could an axle have twisted, binding the carrier, causing the caps to fail and the creating the resultant carnage?

                              Yes, the newer Ex's have IRS, the older ones were a straight-axle 8.8, I used to have a '97.
                              1989 Town Car Cartier: 3G Alt. Upgrade, Mark VIII Electric Fan, Police Interceptor Suspension, 40-series Flows, loaded. HO+ Conversion: E7 heads, Cobra 1.7RR's, Explorer intake, 65mm TB, FMS "E" Camshaft, 4-hole 19lb/hr injectors, A9P ECM, 76mm C&L MAF, BBK CAI. 338,000Km, stock bottom-end.

                              Comment

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