727 front clutch and springs

News:

  • Home
  • Help
  • Chat
  • Login
  • Register

    • « previous next »
    Pages: [1]

    Author Topic: 727 front clutch and springs  (Read 3415 times)

    Offline Four-Forty-fied

    • Jr. Member
    • **
    • Posts: 174
    727 front clutch and springs
    « on: September 19, 2006 - 07:49:23 PM »
    I have a BB 727 case that is getting guts from a SB 727 and figured on a rebuild while I was at it.

    First question is can I put 5 clutch discs in where I only took 3 out? Is there anything that needs to be modified? Different pressure plate perhaps?

    Second question, my book shows the pattern for 9 and 13 front clutch springs, but mine has 11. Should I put all 11 back in? My understanding is more springs = less overlap; fewer springs = more clutch pack grip.

    (I also heard that there are different length springs, and I have no idea what mine are.)
    Logged


    Offline tactransman

    • Sr. Resident
    • ******
    • Posts: 5401
    • 1973 Challenger- Member here since April 14, 2006
    Re: 727 front clutch and springs
    « Reply #1 on: September 20, 2006 - 07:09:52 AM »
    You can put five with the bottom pressure plate from a forward clutch flipped over and special thin clutches(kind of hard for a do it yourselfer)

    You can put four with the same pressure plate and the stock clutches.
    NEVER use the stock wavey snap ring from the direct clutch , it is bad for breaking.
     Always use a flat(.062 thick) one from a forward drum.

    The spring lengths are around 1.240 short  1.540 long.
    If you are going with a manual VB use 13 to 15 springs
    The long ones like to lay down under the retainer, that is what happened in the third pic.
    « Last Edit: September 20, 2006 - 07:15:58 AM by tactransman »
    Logged
    Terry-tactransman 
    Torqueflite/Automatic Transmission Specialist
    Union, Mo.
    Give a man a fish and he eats for a day,teach him to fish and he eats for a lifetime.

    Offline Four-Forty-fied

    • Jr. Member
    • **
    • Posts: 174
    Re: 727 front clutch and springs
    « Reply #2 on: September 20, 2006 - 08:15:53 PM »
    Wow. This is getting to be more of a project than I anticipated. Thanks for your answers. This isn’t going in the Barracuda, so I don’t think I’ll go crazy with it. If I stick with just 3 clutches, will retaining the wavy snap ring still be problematic?

    My springs look like your shorter ones, but are a little bit longer a 1.375” It only had 11 of them in it. According to the TIN chart you posted, the donor tranny is from a 1984-85 318 van or 2wd Ramcharger. I don’t know if it had ever been rebuilt, but when I put it in a 1975 318 van it ran beautifully. (The same could not be said of the 318, but it did get me from Dallas to NYC so I should quit complaining.)

    Basically, it’s going behind a 383 that is quite healthy. (flat top pistons that are flush with the deck, 906 heads, headers, single plane intake, and an unidentified hydraulic camshaft that sounds like rocks in a tin can at idle.)

    I plan on keeping it automatic, but have a Transgo TF-2 shift kit in my possession that will likely find its way into the valve body.

    All things considered, could I get away with the three clutches and 11 springs?
    Logged

    Offline tactransman

    • Sr. Resident
    • ******
    • Posts: 5401
    • 1973 Challenger- Member here since April 14, 2006
    Re: 727 front clutch and springs
    « Reply #3 on: September 20, 2006 - 09:17:47 PM »
    Quote from: Four-Forty-fied on September 20, 2006 - 08:15:53 PM


    All things considered, could I get away with the three clutches and 11 springs?

    With the TF-2 installed , you should be fine. :grinyes:
    Quote from: Four-Forty-fied on September 20, 2006 - 08:15:53 PM
    If I stick with just 3 clutches, will retaining the wavy snap ring still be problematic?
      It will probably be fine. I just always replace it with a flat one to prevent the problem.
    « Last Edit: September 21, 2006 - 06:31:05 AM by tactransman »
    Logged
    Terry-tactransman 
    Torqueflite/Automatic Transmission Specialist
    Union, Mo.
    Give a man a fish and he eats for a day,teach him to fish and he eats for a lifetime.
    Pages: [1]
    « previous next »