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8 speed transmission problems, or just how it is?

Discussion in 'Engine & Performance' started by JS1500, Oct 7, 2018.

Sponsored By: Moe's Performance
  1. Wild one

    Wild one Senior Member

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    Track Hawks get the 8HP95 and as far as I've heard the newer 5th Gens are getting the upgraded 8HP75,but whether that's just the e-torque trucks i'm not sure.TCS offers a kit to upgrade the 8HP70 to the 8HP75 which increases it's holding capacity a fair bit.

    Haas the last numbers in the trannies designation refer to it's torque rating in Newton Meters.The little tranny is rated to 450 Newton/Meters, the 8HP70 is rated to 700 Newton /Meters and the 8HP90 is rated to 900 Newton /Meters.700 Newton/Meters is basically a 516 lb-ft of torque rating,and that's a continuous rating
     
  2. OCDTech

    OCDTech Senior Member Supporting Member

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    I knew of the three main ones, did not know the 95 and 75 though.
     
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  3. Ridgerunner665

    Ridgerunner665 Member

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    I haven't been able to nail that down exactly.... but I "think" it applies to model year 16 and newer.

    My brother in law has a 2016 1500 that he bought used with 42k miles on it.... nice truck, exactly like my 18... all the same options...it seems to be holding up so far.

    Sent from my SM-G960U using Tapatalk
     
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  4. tap4154

    tap4154 Senior Member

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    I haven't towed with it but I carry loads in the bed and I think it's great. In fact 3rd gear on this 8 speed is lower than first gear was in my old F-150 with a 3:55 rear end. I don't drive with a heavy foot, but when I do need to punch it this truck takes off! Unless you're going to tow a lot I think the 3:21 is a great choice with the 8-speed. I get 19-20 mpg combined, and 23 to 24 freeway only.

    Mine is a Tradesman with the black bumpers, but upgraded interior. When I bought it the ones that came with the chrome package and sliding rear window, which I didn't want, had the 3:55 gearing.
     
    Last edited: Jan 19, 2020
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  5. OCDTech

    OCDTech Senior Member Supporting Member

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    To be honest, if my truck happened to have a v-6 when i went to buy, i wouldn't have cared one bit. I had a RC ford f150 before it with 3.7 v-6 Loved it, pretty peppy too.
     
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  6. crash68

    crash68 Senior Member

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    He sometimes pops in here, it's VernDiesel
    He delivers AirStreams TT for factory with his '14 EcoDiesel. He had a head gasket lift on his first motor at 371K miles, installed a new motor and I know he's went over the 600K mark I think a good month ago.
    He found out that the 1500 EVICs will stop at that mileage, it since has been replaced.
     
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  7. OCDTech

    OCDTech Senior Member Supporting Member

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    Now is the 8sp in the Eco the 8HP70? Although the torque ratings are different otherwise probably very similar trannys?
     
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  8. crash68

    crash68 Senior Member

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    The EcoDs get the 8HP70 also, and it's a V-6. It puts out slightly more torque than the Hemi at half the rpms.
     
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  9. tap4154

    tap4154 Senior Member

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    I had a 2000 F150 with the V6, drove it over 300,000 miles with no engine failures at all, except I was getting a valve stem leak toward the end causing a plug to foul. That was a great little engine in my opinion, but I'm even more impressed with this Pentastar so far.
     
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  10. OCDTech

    OCDTech Senior Member Supporting Member

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    Ok, gotcha, and i just went looked, my truck build, mid 2016, don't know why i was thinking the year before.
     
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