rear end upgrade, where to look

Discussion in 'Technical' started by mashori, Feb 10, 2009.

  1. mashori

    mashori Member

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    Last edited: Feb 10, 2009
  2. ratio411

    ratio411 Member

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    Yes.
    I inquired and was told that I had 2 options:

    1: Order a 65-66 Stang 9" Currie, right off the shelf at Summit.

    OR

    2: Call Summit and ask the sales rep to hook up a conference call with Currie and tell them I wanted that rear, but in the proper width for a Maverick. Summit and the Currie rep will make the arrangements for Summit to sell it to you at the same price as the Stang rear... Just slightly narrower for the Maverick.

    Personally, I would probably just do option 1 if I had the dough. .75" in width is not really worth an hour on the phone trying to get the details ironed out with customer service.

    If you want to take your time and see what pops up in salvage yards around you, or even CL or eBay... Look for a rear out of a Granada/Monarch or 57-59 Full size Ford.
    The first 2 cars came with either 8, 9, or an oddball modular rear. The other came with 9" exclusively.

    Then you would need to find either a Crown Vic or Exploder with rear discs to donate. Which version depends on the exact rear you get. 8" or small bearing 9 would get Crown Vic brakes. New large (aka Torino) bearings would use the Exploder brakes. As for the old big bearing rears out of the late 50s cars, I don't know which could be made to work, if at all without swapping axle flanges...:huh:
     
  3. mashori

    mashori Member

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    total for the rear end you mentioned is $2800. I'm just trying to figure out if it's worth my time doing all the hussle and running around to get the setup from junk yards. I called around some junk yard today already and there weren't any maverick rears but I'll call and see what there is as far as garanada/monarch
     
  4. maverick1970

    maverick1970 MCG State Rep

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  5. maverick1970

    maverick1970 MCG State Rep

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  6. Jamie Miles

    Jamie Miles the road warrior

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    If you're having that much of a problem, you can probably just take the 4 lug axles to a machine shop and have the 5 lug pattern drilled into them... I'd GIVE you a 5 lug rear if you were closer.
     
  7. mashori

    mashori Member

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    awesome, thanks for the resources. Looks like most places sell the 9", don't think I need a 9" but I'm guessing it's better than the 8 I have. Bryant is trying to come up with a kit for me too.
     
  8. rthomas771

    rthomas771 Member

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    An 8" is all you need on the street. Your street tires will spin before it will break. An 8" and 9" use the same axles. Now if you had 400 hp and sticky racing slicks then you might wanna look into a 9". A 9" pinion gear rides lower on the ring gear to have more gear contact is one reason it is more desirable for drag racing. The 9" weights more than an 8". The extra weight hurts gas mileage. Don't get me wrong...I have nothing against a 9" on the street, I have one in my Falcon. I'm just saying it is an over kill and not necessary on a street car.
     
  9. ratio411

    ratio411 Member

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    Well... I am not going to say that he has enough engine to break an 8" rear, BUT I have broken a few on the street with just 245/60/14 radials. So to say that an 8" will just spin before anything breaks isn't quite true.
     
  10. rthomas771

    rthomas771 Member

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    True...anything will break. I knew a guy who twisted a few driveshafts in two with an 8". Another guy I know broke a 31 spline Moser axle with a 9". They say the 8" will hold up to 300 hp
     
  11. GrabberGT

    GrabberGT Chris

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    I've got a 8" with 3.55 gears detroit locker and am running 275/40 -17 tires. Im not planning on putting slicks on it but might want to beef it up a little. I'm anticipating an est. 400 to the wheels soon. What is the first point of failure for these and where might I be able to add strength without having to upgrade to 31 spline axles.
     
  12. brainsboy

    brainsboy Member

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    Sorry splines will be first to go, but the detroit locker will help it last longer than a spool.
     
  13. GrabberGT

    GrabberGT Chris

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    I was afraid of that. Thanks
     
  14. ratio411

    ratio411 Member

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    The rears I broke, the differential itself grenaded each time.
    My guess is that if you use a stronger diff, like a spool or DL, the axles/splines would be next weakest link. However if you have a weaker pre-68 carrier, that might give first. The later ribbed carrier is supposed to be much stronger.
     
  15. Blown 5.0

    Blown 5.0 Hooked on BOOST MEMBER

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    I have never broken a axle in a 8 in, The bearing caps always let go first, They break through the bolt hole that holds the adjuster tang. I have broken 28 spline axles in 9 In's. As with a spool i have saw 8.8, 8s, and 9s break. By the way, i dont know if they still do it this way, But Currie made me a 9 in housing to the Maverick specs and 2 31 spline axles for 800 dollars. If you go this route you could score a center section out of a truck, Then as cash becomes available you could upgrade to a different center section.
     
    Last edited: Apr 21, 2009

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