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  • underdrive pulleys

    im being told that i shouldn't use them for my daily driven car because they'll cause over heating. i would think they would be better designed than that. anyone have any problems with theirs?
    sigpic<---SERIOUS cornering now
    300NAhp@the wheels....eventually
    http://www.cardomain.com/id/royal455<--new pics of the engine pull on the '94 firebird's page
    http://www.myspace.com/drfeelgood_80

  • #2
    No they wont cause overheating. If they did it would only be at idle which just means the fan would have to work a bit more. Some people do report charging problems at idle though
    1993 EXT. CAB, 3.4L V6 TBI, 5spd manual. Sonoma
    1990 4Door, 3.2L V6 TBI, 5spd manual. 4X4. Trooper
    Because... I am, CANADIAN

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    • #3
      thats what i thought. i was told 'if gm thought putting a smaller pulley on there would be better for power, they would've put it on there' but i figure they would of put headers on all cars too, but thats only if you dont factor in the engineering headers and underdrive pulleys costs more
      so what kind of problems will i have if i put them on my 3.1 firebird? its my daily driver, now that i sold all my other cars, so i really need it to be reliable.
      sigpic<---SERIOUS cornering now
      300NAhp@the wheels....eventually
      http://www.cardomain.com/id/royal455<--new pics of the engine pull on the '94 firebird's page
      http://www.myspace.com/drfeelgood_80

      Comment


      • #4
        I doubt you will notice any difference. Most report it revs a little better you might get 3 horsepower maybe 5 if there is a big difference in diameter. I highly doubt you will see the 10 to 15 hp some products claim.
        1993 EXT. CAB, 3.4L V6 TBI, 5spd manual. Sonoma
        1990 4Door, 3.2L V6 TBI, 5spd manual. 4X4. Trooper
        Because... I am, CANADIAN

        Comment


        • #5
          That's what I figured. I never thought it would be a huge difference. But I like squeezing out any little bit of power I can.
          sigpic<---SERIOUS cornering now
          300NAhp@the wheels....eventually
          http://www.cardomain.com/id/royal455<--new pics of the engine pull on the '94 firebird's page
          http://www.myspace.com/drfeelgood_80

          Comment


          • #6
            i noticed a BIG difference on my fwd 3.1 with i pulled mine off. but the main thing i noticed was how much of a difference in mpgs. my udp give me around 4 mpgs
            sigpic

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