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Thread: 5R55S (Mustang 5-speed Auto) Anyone done this? 3.73s=4.30s + Less RPM drop on shifts

  1. #1
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    5R55S (Mustang 5-speed Auto) Anyone done this? 3.73s=4.30s + Less RPM drop on shifts

    Has anyone done this?

    Is it possible?

    Would we need a Mustang computer?

    Could we do it another way?

    Would the crossmember lineup?

    Do we need a different slip yoke?

    The first gear ratio is MUCH better than ours, 3.21 v 2.84. With a 3.73 rear gear, you get more than a 4.10 equivalent, you get like 4.30s!

    Also, the RPM drop on 1-2 in the 4R70W is 50%. 50%! That means if you shift at 6000 RPM, your input shaft speed want to go to 3000 RPM (converter notwithstanding) On the 5R55S, the drop is nearly half that

    PI MAKES A CONVERTER FOR THEM, TOO! I know it's not on the website, but I called them, and they said, yes, they do (same price).

    I was thinking I would go with a T-56 like Master did (which is the ultimate), but my wife drives this, and I think I want to keep it more of an easy cruiser...

    I know someone is going to mention the '55' vs the '70' in the name, which implies that it handles a lot less power, but I know for a fact that these things are standing up to A LOT of horsepower in supercharged configurations, and surviving just fine. I don't know how Ford got the '55', but durability S/C'd doesn't seem to be a problem, MUCH LESS N/A'd.

    I like the idea a lot.

    What say you?

    fastcar
    Last edited by fastcar; 10-05-2007 at 10:28 AM.


    13.83 @ 100 best race gas effort

    Adopted June 6, 2007 with 99,967 miles - 300 A build date 8/14/02

    Vericom VC-200 Test Data:
    15.46 @ 94.2 (bone stock)
    15.33 @ NA (K&N FIPK= -.13)
    15.09 @ 95 (Lidio's Tune= -.24)
    14.84 @ 96.5 (FMS 4.10s= -.25)
    14.74 @ 97 (Steeda UDs= -.10)
    14.60 @ 98 (Lidio's Race Gas Tune= -.14)
    All times averaged and corrected

    All VC-200 data acquired at a top secret test facility

  2. #2
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    Why would you want that tranny in our car? It would fall apart in no time, it has lower torque ratings than the 4R70W. The 5R55 is a Ford Ranger tranny. The only reason why it is in a Mustang is because of the light weight. Now the new 6R's in the Explorer would be a good choice. That's the 4R70 unit with two more cogs.
    ----------------------------------------------------------------

    Note, I'm not the original owner. The original owner was a Civilian BSO that died of cancer, the wife was willing to part with the silver beauty for $19k. She had 32,500 miles on her when I got her. Now she's over 50k!

  3. #3
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    Quote Originally Posted by StevenJ View Post
    Why would you want that tranny in our car? It would fall apart in no time, it has lower torque ratings than the 4R70W. The 5R55 is a Ford Ranger tranny. The only reason why it is in a Mustang is because of the light weight. Now the new 6R's in the Explorer would be a good choice. That's the 4R70 unit with two more cogs.
    6 speed FMX? That sounds awesome! I didn't even know about these transmissions...

    The 5R55 IS surviving just fine behind S/C'd Mustangs, and has been for 3 years. I can't argue with that.

    But, I can't argue with a 6R, either!

    So, will it bolt in?

    Does the PI 4RxxW converter work with it?

    Electronics?

    Let's go!

    fascar


    13.83 @ 100 best race gas effort

    Adopted June 6, 2007 with 99,967 miles - 300 A build date 8/14/02

    Vericom VC-200 Test Data:
    15.46 @ 94.2 (bone stock)
    15.33 @ NA (K&N FIPK= -.13)
    15.09 @ 95 (Lidio's Tune= -.24)
    14.84 @ 96.5 (FMS 4.10s= -.25)
    14.74 @ 97 (Steeda UDs= -.10)
    14.60 @ 98 (Lidio's Race Gas Tune= -.14)
    All times averaged and corrected

    All VC-200 data acquired at a top secret test facility

  4. #4
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    I always wondered too what would be needed to do such a swap. Two more gears in a Marauder would be a lot better. This would help acceleration and gas mileage.

    Does anyone know how much such a swap would cost.

  5. #5
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    Quote Originally Posted by MarauderSM View Post
    I always wondered too what would be needed to do such a swap. Two more gears in a Marauder would be a lot better. This would help acceleration and gas mileage.

    Does anyone know how much such a swap would cost.
    Exactly. Imagine running a 3.08 rear gear, so your motor would be would loaf along on the highway, but out of the hole, it would have the equivalent of a 4.56 rearend! That would be totally awesome!

    Plus, you wouldn't get huge RPM drops between shifts, meaning your engine would stay in the power band, and accelerate even quicker. The only penalty would be weight. But, it would get better gas mileage, and have faster acceleration, so who cares!

    I think the COST would be low, in terms of finding a donor truck to get the tranny out of, and doing a physical install: crossmember, slip yoke, possibly driveshaft.

    The question is THE ELECTRONICS. Thats the realy query.

    Does any one know anything about this???

    fastcar


    13.83 @ 100 best race gas effort

    Adopted June 6, 2007 with 99,967 miles - 300 A build date 8/14/02

    Vericom VC-200 Test Data:
    15.46 @ 94.2 (bone stock)
    15.33 @ NA (K&N FIPK= -.13)
    15.09 @ 95 (Lidio's Tune= -.24)
    14.84 @ 96.5 (FMS 4.10s= -.25)
    14.74 @ 97 (Steeda UDs= -.10)
    14.60 @ 98 (Lidio's Race Gas Tune= -.14)
    All times averaged and corrected

    All VC-200 data acquired at a top secret test facility

  6. #6
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    I think the whole Explorer powertrain is the way to go: 292hp 3V engine with the 6speed auto - and regular gas to boot!

  7. #7
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    Ratio Chart

    Gear Ratios
    1st Gear 4.17:1
    2nd Gear 2.34:1
    3rd Gear 1.52:1
    4th Gear 1.14:1
    5th Gear 0.86:1
    6th Gear 0.69:1

    Just found this on the 6R.

    There is a bigger % drop between 1st and 2nd, than on the 5R55S (still less than on the 4R70W), but it's got 6 speeds, so, that might make it worth it

    If you have a 4.56 rear gear in your Marauder, you have a 12.95:1 1st gear ratio. You can get that kind of performance using this transmission with a 3.08 rear gear!!!

    fastcar


    13.83 @ 100 best race gas effort

    Adopted June 6, 2007 with 99,967 miles - 300 A build date 8/14/02

    Vericom VC-200 Test Data:
    15.46 @ 94.2 (bone stock)
    15.33 @ NA (K&N FIPK= -.13)
    15.09 @ 95 (Lidio's Tune= -.24)
    14.84 @ 96.5 (FMS 4.10s= -.25)
    14.74 @ 97 (Steeda UDs= -.10)
    14.60 @ 98 (Lidio's Race Gas Tune= -.14)
    All times averaged and corrected

    All VC-200 data acquired at a top secret test facility

  8. #8
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    Quote Originally Posted by mrjones View Post
    I think the whole Explorer powertrain is the way to go: 292hp 3V engine with the 6speed auto - and regular gas to boot!
    Hmm. Them's fightin words! You've got a lot of folks here (including me) proud to have 4V engines in their rides. The 32 Valve 4.6 Modular engine represents the pinnacle of Ford Engine Design. It's the ULTIMATE mod motor. The 3V technology was a cost cutting compromise, between a need to improve power over the 2V, without incurring the costs associated with the 4V. Well, we've already paid for ours, so, I think we want to be keeping 'em.

    fastcar


    13.83 @ 100 best race gas effort

    Adopted June 6, 2007 with 99,967 miles - 300 A build date 8/14/02

    Vericom VC-200 Test Data:
    15.46 @ 94.2 (bone stock)
    15.33 @ NA (K&N FIPK= -.13)
    15.09 @ 95 (Lidio's Tune= -.24)
    14.84 @ 96.5 (FMS 4.10s= -.25)
    14.74 @ 97 (Steeda UDs= -.10)
    14.60 @ 98 (Lidio's Race Gas Tune= -.14)
    All times averaged and corrected

    All VC-200 data acquired at a top secret test facility

  9. #9
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    Quote Originally Posted by fastcar View Post
    You've got a lot of folks here (including me) proud to have 4V engines in their rides...
    ...Some of us have no reverence or loyalty to engine families or design...

    ...The 32 Valve 4.6 Modular engine represents the pinnacle of Ford Engine Design. It's the ULTIMATE mod motor....fastcar...
    ...The soon to be new "Hurricane" engine will hopefully obsolete all prior Ford engine design...
    1957 Custom 2 dr Sedan, 1979 F-series 14' U-Haul 330 XD, 1979 F150 4X4 428 PI/CJ heads/NP 435/4:11 axles-rear Det. Lkr., 1993 Grand Marquis, Y2K CVPI supercharged 5.4, 2003 MM

    The more I learn, the more I find out I don't know.

    Confusion will be my epitaph...

    Home of the Berserker Marauder, one of the ancient Norse warriors legendary for working themselves into a frenzy before a battle and fighting with reckless savagery and insane fury, held to be invulnerable...shirtless regardless of wounds...(possibly due to ingestion of psychotropic and hallucinatory drugs such as Fly Agaric Mushrooms)...

    ΓρεεκΓοδ

  10. #10
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    What's the Hurricane engine??? Never Heard of it
    2003 MM 300a
    Trilogy #109
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    Cobra 18" Wheels
    Tint Job
    Chromed Grill with Badge Delete
    Everything else Stock


  11. #11
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    Quote Originally Posted by lastdaze04 View Post
    What's the Hurricane engine??? Never Heard of it
    It is Ford's newest V8 gasoline engine, overhead cam(s?), that is supposed to debut in the F-series trucks first. Also been rumored/referred to as "Boss", it should allow up to 7 liter displacement.

    Ford seems to be keeping details secret, but (I think Roush) had a prototype in a Mustang at the Milan racetrack this summer.

    Some rumors are on Blue Oval Forums:

    http://www.blueovalforums.com/forums/index.php?

    1957 Custom 2 dr Sedan, 1979 F-series 14' U-Haul 330 XD, 1979 F150 4X4 428 PI/CJ heads/NP 435/4:11 axles-rear Det. Lkr., 1993 Grand Marquis, Y2K CVPI supercharged 5.4, 2003 MM

    The more I learn, the more I find out I don't know.

    Confusion will be my epitaph...

    Home of the Berserker Marauder, one of the ancient Norse warriors legendary for working themselves into a frenzy before a battle and fighting with reckless savagery and insane fury, held to be invulnerable...shirtless regardless of wounds...(possibly due to ingestion of psychotropic and hallucinatory drugs such as Fly Agaric Mushrooms)...

    ΓρεεκΓοδ

  12. #12
    Join Date
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    (The other West Coast) Wyoming Michigan
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    1957 Custom 2 dr Sedan, 1979 F-series 14' U-Haul 330 XD, 1979 F150 4X4 428 PI/CJ heads/NP 435/4:11 axles-rear Det. Lkr., 1993 Grand Marquis, Y2K CVPI supercharged 5.4, 2003 MM

    The more I learn, the more I find out I don't know.

    Confusion will be my epitaph...

    Home of the Berserker Marauder, one of the ancient Norse warriors legendary for working themselves into a frenzy before a battle and fighting with reckless savagery and insane fury, held to be invulnerable...shirtless regardless of wounds...(possibly due to ingestion of psychotropic and hallucinatory drugs such as Fly Agaric Mushrooms)...

    ΓρεεκΓοδ

  13. #13
    CVT from a Fivehundred.

    No RPM drop and with a powerful engine you can have lots of fun.

  14. #14
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    Quote Originally Posted by GreekGod View Post
    Wow, it's amazing the things you don't know you don't know...

    ZF 6 speed autos behind Australian Mod motors? I believe they may even have paddle shifters???

    And DSI to replace them with better, less expensive versions?

    This sounds like a dream come true. I'm surprised no one is selling these things aftermarket in the U.S. for V-8s.

    This is something to think about...

    fastcar


    13.83 @ 100 best race gas effort

    Adopted June 6, 2007 with 99,967 miles - 300 A build date 8/14/02

    Vericom VC-200 Test Data:
    15.46 @ 94.2 (bone stock)
    15.33 @ NA (K&N FIPK= -.13)
    15.09 @ 95 (Lidio's Tune= -.24)
    14.84 @ 96.5 (FMS 4.10s= -.25)
    14.74 @ 97 (Steeda UDs= -.10)
    14.60 @ 98 (Lidio's Race Gas Tune= -.14)
    All times averaged and corrected

    All VC-200 data acquired at a top secret test facility

  15. #15
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    Found this on wikipedia...

    Getrag

    <!-- start content --><TABLE class="infobox vcard" style="FONT-SIZE: 90%; WIDTH: 23em"><TBODY><TR><TH class="fn n org" style="FONT-SIZE: 120%; TEXT-ALIGN: center" colSpan=2>GETRAG</TH></TR><TR class=note><TH style="PADDING-RIGHT: 0.75em; TEXT-ALIGN: right">Type</TH><TD>Corporation</TD></TR><TR class=note><TH style="PADDING-RIGHT: 0.75em; TEXT-ALIGN: right">Founded</TH><TD>Ludwigsburg, Germany (1935)</TD></TR><TR><TH style="PADDING-RIGHT: 0.75em; TEXT-ALIGN: right">Headquarters</TH><TD class=adr>Untergruppenbach, Germany</TD></TR><TR class=note><TH style="PADDING-RIGHT: 0.75em; TEXT-ALIGN: right">Key people</TH><TD>Dieter Schlenkermann, CEO/Director
    Tobias Hagenmeyer, President
    Hans-Jürgen Förster, CFO
    </TD></TR><TR class=note><TH style="PADDING-RIGHT: 0.75em; TEXT-ALIGN: right">Industry</TH><TD>Auto parts supplier</TD></TR><TR class=note><TH style="PADDING-RIGHT: 0.75em; TEXT-ALIGN: right">Products</TH><TD>Automobile transmissions
    Automobile axles
    </TD></TR><TR class=note><TH style="PADDING-RIGHT: 0.75em; TEXT-ALIGN: right">Employees</TH><TD>10,065 (as of June 30, 2006)</TD></TR><TR><TH style="PADDING-RIGHT: 0.75em; TEXT-ALIGN: right">Website</TH><TD class=url>http://www.getrag.com</TD></TR></TBODY></TABLE>
    GETRAG is a leading manufacturer of automobile manual transmissions. The company was founded on 1 May 1935 in Ludwigsburg, Germany by Hermann Hagenmeyer as the Getriebe- und Zahnradfabrik Hermann Hagenmeyer AG. Today, the company is allied with the Dana Corporation, Volvo and the Ford Motor Company, but supplies transmissions to most auto manufacturers including General Motors, DaimlerChrysler, Fiat, Porsche, BMW and Toyota. Chief competitors include Aisin and ZF.
    GETRAG recently entered into two new alliances with Ford and DaimlerChrysler to produce the Dual Clutch Powershift Transmission at two new plants in North America - one in Tipton, IN and the other in Mexico; production will begin in 2008 for DCx (Tipton, IN), 2009 for Ford (Mexico) and then an additional DCx volume out of Mexico in 2010. The temporary headquarters for the new division, GETRAG Transmissions Corporation (or GTC), is located in Sterling Heights, MI. The permanent headquarters will be constructed by end of 2008 at another suburb of Detroit.
    The Dual Clutch Transmission combines the advantages of a manual and an automatic transmission, and is more energy efficient than either. Shifting between gears will be unnoticable to passengers. Two main versions will be produced: a "wet" clutch version which utilizes hydraulic fluid for shifting and a "dry" clutch version which uses electronic motors to control the clutch.
    1957 Custom 2 dr Sedan, 1979 F-series 14' U-Haul 330 XD, 1979 F150 4X4 428 PI/CJ heads/NP 435/4:11 axles-rear Det. Lkr., 1993 Grand Marquis, Y2K CVPI supercharged 5.4, 2003 MM

    The more I learn, the more I find out I don't know.

    Confusion will be my epitaph...

    Home of the Berserker Marauder, one of the ancient Norse warriors legendary for working themselves into a frenzy before a battle and fighting with reckless savagery and insane fury, held to be invulnerable...shirtless regardless of wounds...(possibly due to ingestion of psychotropic and hallucinatory drugs such as Fly Agaric Mushrooms)...

    ΓρεεκΓοδ

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