89 5.0 and c4 tranny in mav.

Discussion in 'Technical' started by jim_barbier, Apr 2, 2005.

  1. jim_barbier

    jim_barbier Member

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    89 5.0 and c4 tranny in mav.flex plate help, please

    i am putting a 89 5.0 in a maverick and I am using the original 74 c4 tranny from a I 6 I need to know what year flex plates will work because the motor I am using is origanally stick shift and I also need to know what year torque converters I can use so I buy the correct 1 to fit the flex plate ect. any help is really apreciated and let me tell you I have got alot of help here doing this project and all you people are great please mail me at jimbarbier@hotmail.com with any help you can give me thanks Jim
     
    Last edited: Apr 2, 2005
    jim_barbier, Apr 2, 2005
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  2. don graham

    don graham MCG State Rep

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    don graham, Apr 2, 2005
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  3. Cabinator

    Cabinator Member

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    Flexplate

    Jim, You can use a stock type converter for a V-8 Maverick, but the flexplate has to be a M-6375-E302 from Ford Racing Parts or the equivalent. This is a 157 tooth flexplate with a 50 oz weight. This flexplate was not offered on any car from the factory, but I m pretty sure that most of the Classic Mustang suppliers carry it. I just checked Mustangsplus.com, they have it for $140. Ive bought it for under $100 on ebay from a Mustang supplier, but he doesnt have any listed right now. I wish I could remember his Ebay ID. You also might try California Mustangs.
     
    Cabinator, Apr 2, 2005
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  4. don graham

    don graham MCG State Rep

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    the 157 tooth and the 164 tooth use 2 different torque convertors. make sure you buy one for later than 1970 as they changed from a 24 spline input shaft to a 26 spline in 1970. i found out the hard way.:)
     
    don graham, Apr 2, 2005
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  5. tim keck

    tim keck truckdrivintrailertrash

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    There's also 2 different bolt patterns how the torque bolts to the flywheel.I found this out the hard way as well.
     
    tim keck, Apr 3, 2005
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  6. EFIMAV

    EFIMAV Member

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    if memory serves correctly, older truck C4 converters bolt up to the newer 50oz flex plates (larger bolt pattern). Using the 50oz 84 lincoln motor and an older truck C4 tranny it all bolted up. That is assuming the info regarding the motor which was still in the lincoln and the tranny which wasn't in the truck was accurate.
     
    EFIMAV, Apr 3, 2005
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  7. Grabber5.0

    Grabber5.0 Gear-head wannabe

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    Got my 50 oz 157 tooth plate from summit for under $60. It's a TCI SFI approved (not that it mattered to me, it was the cheapest one. :D)
     
    Grabber5.0, Apr 3, 2005
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  8. 77mav302

    77mav302 Member

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    My '77 had the 164 tooth flexplate stock and it has the 11.4"(11 7/16") bolt circle. when I replaced the engine with a 5.0 I just used a stock flexplate from an AOD and the converter bolted up to it just fine. Cost was $13 from a salvage yard.
     
    77mav302, Apr 6, 2005
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