1. Registration trouble? Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved.
    Dismiss Notice

Comp Cam Feedback?

Discussion in 'Early CJ5 and CJ6 Tech' started by bhdesmet, Jun 1, 2004.

  1. Jun 1, 2004
    bhdesmet

    bhdesmet New Member

    red bluff ca
    Joined:
    Oct 20, 2003
    Messages:
    16
    I am having my :v6: engine rebuilt and opted to put in a different cam instead of the stock one. The engine shop said that to increase the torque there were two good cams http://www.compcams.com/Technical/Catalogs/106-03/HTML/110-113.asp
    One was the 63-234-4 (the first one) and the other was the 63-235-4 (the second one)
    He said both were good but the second was better for onroad and offroad because the RPM range only topped out at 5400. And the other cam tops out at 4800 so it wasnt so good for highway driving.
    I dont ever remember getting even close to being above 4000 rpm and that was at 70 mph. Would going with the lower rpm range make that big of a difference? also if you have one in your engine how is the street drivability and also the low end torque of it?
    Just trying to get some feedback if you like your comp cam.
    Thanks Brian
     
  2. Jun 1, 2004
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
    Messages:
    9,221
    The one that tops out at 4800 RPM would be fine in a CJ I'd think.

    YMMV.

    It's not going to be "bad" for highway driving. Just run out of steam before the other one will when you're rowing the gears. If you want something to go faster that's the ticket. Low end, off road performance go with the other one.
     
  3. Jun 1, 2004
    bhdesmet

    bhdesmet New Member

    red bluff ca
    Joined:
    Oct 20, 2003
    Messages:
    16
    Thanks thats what I chose I wasnt looking for a NASCAR jeep that had a high speed. I was just worried that I would loose a little drivabilty (if thats a word) on the highway by going with the lower rpm range.
     
  4. Jun 1, 2004
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
    Joined:
    Nov 6, 2002
    Messages:
    4,275
    If anything, I think you'd probably GAIN a little in the driveability dept. with the lower RPM cam. IMHO, the higher in the RPM range that a cam is designed to operate, the more streetability you give up. However in this case, I think that the difference would be hardly noticeable in an engine that is going to see all of it's time under 4000 RPMs.

    FWIW- I think I'd choose the lower RPM cam also. ;)
     
  5. Jun 1, 2004
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
    Messages:
    9,221
    Nah, how often do you cruise at 5k? R)
     
  6. Jun 1, 2004
    vanguard

    vanguard

    Hey now. If I want all 72 hp the :hurrican: has to offer, I got to run up at 4K. R)
     
  7. Jun 1, 2004
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
    Joined:
    Sep 23, 2002
    Messages:
    12,529
    I would look more at where the cam STARTS working rather than where it stops. You want a cam that starts the torque curve at the lowest rpm possible so that max torque is made at a lower rpm when talking off road. If the starting rpm range is nice and low on both, say 800 rpm or so which is common, then go with the cam that tops out higher. If the cam that tops out at a higher rpm starts at a higher rpm than the other one, then go with the one that starts lower. You'll be much happier on the trail with it. Nickmil.
     
  8. Jun 1, 2004
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
    Messages:
    9,221
    Nick's right.

    I wasn't thinking that. I was thinking along the lines that most aftermarket cams like that don't start kicking in until higher in the RPM band if they top out higher.
     
  9. Jun 1, 2004
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
    Joined:
    Nov 6, 2002
    Messages:
    4,275
    What he said. :oops:
     
New Posts