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  • 3.6l dohc?

    hey there guy's, well, as you could probably tell, im along way from where your target audiance is, but here goes

    currently in australia holden ( a gm company) are relesing a new motor, it's called the hfv6, it's a 3.6l dohc, it was gonna be a 3.8lt dohc but they were having problems in maintaing a smoth operation. so what i wanna now i guess iss

    how can a 3.6lvt dohc motor work? if it's got the cam on top, and the crank on the bottom, well, what makes the cam move? probably a silly question, but all the v6's we have over here are pushrod style with a crank and cam in the bottom end with a push rod operating valves, so im guessing i wanna know how this type of setup will work, i know how a straight 6 works, but how does it fit into a v6 setup? also what type of torque and kw ratting can we expect from this new motor, we have been told that the 3.6 will be capable of pushing out 190kw, (not sure if you guy's operat in kw's over there, i think you guy's are still horse power).

    what are the direct disadvantages from having a 3.6lv6 dohc motor as oposed to the 3.8lv6 pushrod setup, (the 3.6 lt pushrod is bassed on the buick motor, it's a 1989 design motor which has been re-vamped more times then i care to poke a stick at)

    so any ideas or info would be good guy's, thanks for you help

    garth

  • #2


    All the info with pics you wanted to know.
    1995 Pontiac GTP
    Over $12K invested, and still its slow. Maybe thats because thats most all repairs. Don\'t knock the engine though, because thats the only part that has seemed to last.

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    • #3
      check your messages, then write back.

      Jake
      GM Goodwrench Tech - GM Certified

      1991 Pontiac Grand Prix GTP - 3.4L DOHC , 5 Speed Manual Transmission , Turbonetics 62mm turbo, Turbonectics Evolution Wastegate , Turbonetics Raptor BOV , Large Front Mount Intercooler , AEM Methanol Injection , Car is running at 11PSI currently with methanol injection.

      Runs 13.4 In the 1/4 with a 3 second 60 foot

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      • #4
        thants for the quick reply guy's, looking forward to hearing more on this topic, as you have had the dohc v6 for longer than us aussies, im sure you will all the for and against arguments

        cheers
        garth

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        • #5
          No DOHC's, poor bastard......

          Lyle

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          • #6
            Well the 3.6DOHC is probably based off of our precious 3.4L DOHC. 60* formation, saem basic shapes.

            The 3.8L pushrod is the most overrated engine ever. But anyways, it offeres a strong low and midrange, but lacks on the high end. Thsi is where the DOHC engines take flight.

            A cam chain or belt will drive the top 4, and it is run off the intermediate shaft(the middle "cam")

            We still run in horsepower, and the 3.4L was made for 200-215, but has the potential for much more. I'd guess around 245hp

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            • #7
              The 3.6 is not based on ours, the only thing is shares is the 60V6 designation.

              The 3.6 has a much better powerband. The only disadvantage would be DIY repairs and such. DOHC engines are generally harder to work on than the pushrod engines. Its hard to say what problems it might have though so until its out for a while, maintenance is up in the air.
              Ben
              60DegreeV6.com
              WOT-Tech.com

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