C4 tranny slipping

Discussion in 'New Members Forum' started by clarks971, May 24, 2009.

  1. clarks971

    clarks971 New Member

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    Hey all,

    I don't have a commet or Maverick but it is a Ford. 1973 Pinto. 2.3 liter turbo with NOS. C4 Automatic stock. Runs 12.5 1/4mile at 108mph.

    2nd to last pass had some slipping 2nd to 3rd backed off the gas a little and it shifted and all was ok.

    Last pass major slip from 2nd to 3rd rpm all over the place and then oil started shooting out the dipstick tube. Messy.

    I don't expect the Trans to last forever but I'm wondering if anyone thinks I could just adjust the band and be OK for awhile or if it's done? I know nothing about auto transmissions. It has newer clean unburnt oil in it and who knows how many miles.

    Also, because of the turbo and positive pressure I never hooked up the vacuum Mod. It shifted fine via RPM and nice and firm shifts even without shiftkit. Was that a mistake?

    Thanks for any help in advance.
     
    Last edited by a moderator: Aug 3, 2014
  2. Jamie Miles

    Jamie Miles the road warrior

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    :Welcome: Awesome car!!

    Look up the member PaulS on here. He is the man to talk to about C4's.
     
  3. rayzorsharp

    rayzorsharp I "AM" a Maverick!

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    Agreed! :yup:
     
  4. Mercurycruizers

    Mercurycruizers David (Coop) Cooper

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    Yes!Agreed! PaulS istheman. He built my C-4.....
     
  5. scooper77515

    scooper77515 No current projects.

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    I like that car. A REAL sleeper.:D

    But if I were you, driving a 12 second car on a 40 yr old transmission? Get it rebuilt before you blow it.

    That is why I don't drive my car. New engine with stock 40 yr old tranny, and I am afraid to drive on it until I get the trans rebuilt.
     
  6. ford84stepside

    ford84stepside Lone Wolf

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    WOW! A Pinto blowing away a 455 Olds! Where's TL now? :rofl2:
     
  7. greasemonkey

    greasemonkey Burnin corn

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    Most likely its hurt if it slipped... And the cause is most likely the servo seals or direct clutch. I'd just freshen it up and put a good shift kit in it or valvebody. Nice ride too by the way.
     
    Last edited: May 25, 2009
  8. don graham

    don graham MCG State Rep

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    I'd get it freshened up. Even if you can adjust the bands. It's only going to be a matter of time. I don't ever know when a good time is, bit I always seem to find out at a bad time.:)
     
  9. clarks971

    clarks971 New Member

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    Thanks for all the comments! I will look up PaulS. I'm figuring I'd have to buy a beefed up trany, just would like to make a few more races until I get it. Someone told me to look at the trannies from redneck performance on ebay.
     
  10. don graham

    don graham MCG State Rep

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    You'll probably get a better deal from Paul and he's in Washington. Not too far from you. :)
     

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