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  •  » FYI Ford, Classic Mustang Tech Discussion
  •  » Think I'm Going to make the change from C4 Auto,to 5 Spd

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    5/03/2013 9:25 PM  #1

    Fastbackbhoy
    FYI Addict

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    From: St. Catharines Ontario Canada
    Registered: 4/01/2013
    Posts: 156

    Think I'm Going to make the change from C4 Auto,to 5 Spd

     The more I drive and Enjoy My Mustang,I'm now seriously  Considering The 5 Spd.

    Who has done the Conversion, any  Do's and Don't.?

    I know it's in the FYI page,but always good to know details from someone who has actually done this.

    Jimmy. O

     

    5/03/2013 9:41 PM  #2

    MS
    Forum Originator

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    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 12,155

    Re: Think I'm Going to make the change from C4 Auto,to 5 Spd

    The most important thing I learned was to get a good transmission from the start.  I initially installed a swap meet T5 and immediately had to pull it back out.  Then I bought a brand new one.  Get a new one or a quality rebuild from glens65 5.0.  I have purchased two from him and several others have gotten theirs from him.

    Be realistic on the exhaust system you have on the car, as big headers will affect your expenditure.

    Plan on putting some different gears in the rear end if you don't already have them.  I had a 400HP 31W in my car with a 3.0:1 rear end.  The big cam made it so I could not use 5th gear under 70MPH.  I tried 3.89, 3.70 and 3.50 gears.  The car ran best and felt like the strongest acceleration with the 3.70 rear gear.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    5/04/2013 3:40 PM  #3

    BillyC
    I FYI 24-7

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    From: Chesapeake, Va.
    Registered: 4/02/2013
    Posts: 966

    Re: Think I'm Going to make the change from C4 Auto,to 5 Spd

    I agree with Steve on the issue of a quality trans. Another consideration is what you are going to do with the car. That can determine what clutch you use, rear gears etc. Best thing I di was buy a fastener kit fron Rosehill. It had every nut and bolt needed for the job.

    "anyone that stops learning is old, whether at twenty or eighty"Henry Ford
     

    5/04/2013 6:37 PM  #4

    MS
    Forum Originator

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    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 12,155

    Re: Think I'm Going to make the change from C4 Auto,to 5 Spd

    About those rear gears.  If your engine is basically stock in the camshaft department, you can leave the stock 2.79 or 2.80 or 3.0 rear gears in it.  BILLY WALTON did that on his 66 with a carbureted 302 and pulls down over 25 MPG on BASH trips.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    5/05/2013 6:15 PM  #5

    6sally6
    Hyper FYIFORD ADDICT

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    From: Surfside Beach,SC
    Registered: 4/02/2013
    Posts: 6,736

    Re: Think I'm Going to make the change from C4 Auto,to 5 Spd

    MustangSteve wrote:

    About those rear gears.  If your engine is basically stock in the camshaft department, you can leave the stock 2.79 or 2.80 or 3.0 rear gears in it.  BILLY WALTON did that on his 66 with a carbureted 302 and pulls down over 25 MPG on BASH trips.

     
    I'm a HUGE fan of BIG cams and I still have the 3.00:1 gear-in-the-rear.
    Engine IS happier above 60/65 in 5th.
    I sorta like the lopey sound at 50mph in 5th though.
    If I go to pass anyone on the freeway I usually drop it in 4th to not lug the engine.
    Third gear at 65+ is a REAL hoot when passing though!
    6sal6

    Get busy Liv'in or get busy Die'n....Host of the 2020 Bash at the Beach/The only Bash that got cancelled  )8
     

     

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  •  »  Think I'm Going to make the change from C4 Auto,to 5 Spd

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