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overdrive

  1. 4

    Past Wisdom

    I bought a 1986 CUCV 6.2l Diesel. Questions are...who makes a tachometer that properly works? Use of a Gear Vendors OD? Instalation of Stan's Headers and 2 1/2 pipes with Magnaflow mufflers? Diesel fuel filtration add on? Interested to see what others say before I spend the big $$$! thanks to...
  2. Thomas Fournier

    Transmission dilemma 4l80e / th400

    Hello all, I have pretty much decided to go with a 4L80E swap in my 1977 K20 pickup. It has a sbc 350, np241 and 4.56 gears. Unless there is some new information as to why i need to scream down the freeway at 2900 rpm....im gonna go with a 4L80. I know the th400 is a badass trans but mine is...
  3. SpeedlabDan

    Thoughts on the Drivetrain associated with the 6bt Cummins diesel trucks

    OK so I'm leaning towards a 6bt swap but the Drivetrain is up for debate. My first choice would be an Ally 1000 but the associated engine adapters then tcase adapters are pricey not to mention tcm. So, what about the driveline behind the engine in a 4wd? Is it a 727 or version of? What tcase...
  4. Thomas Fournier

    Us gear vs gear vender overdrive units

    Ok I'm sure this has been on here before but there isn't very much info on this subject. I have a 77 chevy with a built 350 th400 np241 14bff rear dana 44 4.56 gears and a locker in the rear. I want some overdrive cause 3000rpm isn't fun at 65. I don't want to run. Crappy 700r4 cause I hate the...
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