3.23 and 3.55 Rear-End Gears Available from Richmond & Speedlogix $550

Discussion in 'BMC / Speedlogix' started by Speedlogix, Oct 21, 2008.

  1. Speedlogix

    Speedlogix BMC is now Speedlogix

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    We've all been waiting for this for the LX cars for years, and it's finally happening ... rear-end gear options for the Challenger, Charger, Magnum and 300! We will carry these 3.23 and 3.55 of course and will be running a group buy to kick off the first release. Pricing and ETA to follow soon!

    EDIT: We have pricing available and we can offer $100 off retail for a price of $550. Click here to order and we can ship within a couple of days: speedlogix

    If you are interested in them, please post here along with the gear set you will want. I'll keep the list updated and give you as much info as I can as soon as it's available!

    Who wants what?
    1. SRT8U - 3.55

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    Richmond Gear - Press Release

    Richmond Gear announces the introduction of gear sets designed specifically for the new Dodge Challenger, Dodge Magnum, Dodge Charger and Chrysler 300. These new 215 mm gears are available in both 3.23 and 3.55 ratios.

    Also known as the SRT platform, these gears will be used behind Chrysler’s 6.1 L Hemi. Chrysler offered gear ratios in the range of 3.07 and numerically lower, for production cars.

    Richmond Gear engineering using our expertise in designing high performance gears, developed these gears to improve the performance of the SRT vehicles.
    ------------------------

    :worthy:
     
    Last edited by a moderator: Jun 25, 2011
  2. StevoSRT

    StevoSRT Moderator

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    Too much for my blood but this list will be very much dependent on the price Lisa....

    Do you have any sorta idea on a general pricing for this?...all gears so far have been MUCHO DENERO! lol

    Just asking to help you guys out cause thats what everyone who sees this is gonna be thinkin :thumb:
     
  3. 1fastsedan

    1fastsedan Destroyer of Warranties

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    Any LSD or high-strength axles to go with it?
     
  4. Speedlogix

    Speedlogix BMC is now Speedlogix

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    I know pricing will be a key factor, and as soon as I have the info, I'll post it. This is just brand spankin' new from Richmond yesterday, and they don't even have this press release on their site yet!

    Not from Richmond at this time, but we do carry some complete rear-end options from other manufacturers, and there are new axle options in the works as well.
     
  5. SRT8U

    SRT8U Supporting Vendor

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    Wohooooooooooo
     
  6. StevoSRT

    StevoSRT Moderator

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    No doubt you'll take care of us Lisa...just trying to be helpful :happy: haha
     
  7. Speedlogix

    Speedlogix BMC is now Speedlogix

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    Retail is $650 and the lowest we can advertise is $550. We will be able to ship these out within a few days, so post if you are interested and we'll keep working on getting a group buy possibly put together.
     
  8. 8yourM5

    8yourM5 Full Access Member

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    if its just the gears and I can switch them in and call it a day I am down. I dont want to have to buy a whole new rear end
     
  9. Speedlogix

    Speedlogix BMC is now Speedlogix

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    Yep, these are just the gears, so it's an easy swap out!
     
  10. StevoSRT

    StevoSRT Moderator

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    WOAH!!!!!!!!.....make sure to highlight the crap out of those prices....you'll have to beat people away with a stick! haha

    thats awesome!!!....time for the times to drop :happy:
     
  11. 8yourM5

    8yourM5 Full Access Member

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    Lisa how much is the install going to cost rne you think? how much is my top end speed going to change? what will be the biggest positives with the 3.55's thanks
     
  12. Speedlogix-Mikey

    Speedlogix-Mikey SpeedlogiX Staff

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    We have 3.23 gars in stock and ready to go for your 215mm rear end! Want 3.55s? We can get those in just a couple of days to you!
     
  13. Jected

    Jected Aussie Blown 426

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    Please let me know when the 3.55's are in. Thanks.
     
  14. Speedlogix

    Speedlogix BMC is now Speedlogix

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    I can have them here same day, so let me know when you're ready and I'll get them out to you.
     
  15. rubbel

    rubbel Full Access Member

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    Google gear ratio speed calculator and you can determine speed @ RPM in various gears with different rear end end set-ups. Note tire diameter is also a part of the equation.

    http://www.kabamus.com/garage/gears.html

    http://www.apexgarage.com/tech/gear_ratios.shtml
     
  16. StevoSRT

    StevoSRT Moderator

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  17. rubbel

    rubbel Full Access Member

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    For the SRT8 here is auto trans ratio's:

    Trans Description Cont. Automatic
    First Gear Ratio :)1) 3.59
    Second Gear Ratio :)1) 2.19
    Third Gear Ratio :)1) 1.41
    Fourth Gear Ratio :)1) 1.00
    Fifth Gear Ratio :)1) 0.83
    Reverse Ratio :)1) 3.16
    Final Drive Axle Ratio :)1) 3.06

    With 20" F1 tires dia. is 29.3" I think. You can look this up to be certain of tire diameter.

    For the Tremac T6060 the ratios are:

    Trans Description Cont.: Manual
    First Gear Ratio :)1): 2.97
    Second Gear Ratio :)1): 2.10
    Third Gear Ratio :)1): 1.46
    Fourth Gear Ratio :)1): 1.00
    Fifth Gear Ratio :)1): 0.74
    Sixth Gear Ratio :)1): 0.50
    Reverse Ratio :)1): 2.90
    Final Drive Axle Ratio :)1): 3.92

    Hope this helps

    I had a custom rear end built with 3.55 rear end and my 6 speed ratio's are:

    1ST GEAR 2ND GEAR 3RD GEAR 4TH GEAR 5TH GEAR 6TH GEAR

    2.71 1.79 1.30 1-1 .89 .75


    Remember tire diameter also must be considered. I run 28" diameter slicks.

    Using the calculator you can compare the calculated speed at RPM in each gear. Also, co-efficent of friction is a factor when looking for top speed.


    The drag coefficient of 0.353 (9.01 CdA) is fairly high for a modern car, and similar to the 300C SRT8 (at 0.355).
     
  18. SRT8U

    SRT8U Supporting Vendor

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