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The numbers are in...
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Thread: The numbers are in...

  1. 06-16-2006, 02:03 AM #1
    jeep_man_401
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    The numbers are in...

    My 401 has survived the dyno testing and is somewhat happy in its new home...my rusty J10.

    Although I was shooting for 500HP I came up short, I know the Hedman(Cheap) headers are killing the exhaust flow and running 2 4bbl is not "ideal" for making killer power...but...

    The peak HP was 460 at around 5500RPM the torque wasn't a peak at all...at 1800RPM (the lowest we could load the dyno) was 398ft¬?lbf, it rose to 450ft¬?lbf at 2000RPM and stayed there until 5500RPM. The flatest torque curve I have ever seen.

    As soon as I get some time I will scan and post the charts and if I can get it to work, a short video of one of the pulls on the dyno.

    It's in the truck now and have to wait until Tuesday for exhaust, then it's off to the land fill to dump a load of garbage and weigh the truck to find out how much weight I need to add for the truck pulls coming up. Of course I have to cruise threw town for any "takers"

    Any bets on how long the QT case will last?

    Hopefully I can get some brakes back with a vac can...anybody use one before?
    If this new part can't break....what old part will??
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  2. 06-16-2006, 06:11 AM #2
    jeepsr4ever
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  3. 06-16-2006, 10:23 PM #3
    tarior
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    It's all in the tuning now.
    1969 Rebel 401 TH400
    1978 J10 401, QT
    1978 Wag 401 QT
    1973 Javelin AMX in pieces.
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  4. 06-21-2006, 06:42 PM #4
    rollen dean montoya
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    once you dial it in you just might get some more power from the
    beast.
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  5. 07-14-2006, 09:54 AM #5
    KJMac
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    JM-401, I couldn't find the cam specs. I did a couple searches.
    `81 CJ5,304,T-176.
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  6. 07-15-2006, 02:19 AM #6
    jeep_man_401
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    I wouldn't use this one in your 360 though..

    It was made using the flow numbers from my Indy heads.


    I'll look for that cam card I have in my 360 this weekend and try and post it by Monday night. It's a milder cam but still had plenty of power and I would smoke many 350's and even a few 454's with it.


    If this new part can't break....what old part will??
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  7. 07-15-2006, 09:38 AM #7
    jeepsr4ever
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    Wow that is one flat torque curve!
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  8. 07-16-2006, 07:46 PM #8
    jeep_man_401
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    Yes...I didn't make my 500hp but I guess that makes up for some short comings.
    If this new part can't break....what old part will??
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  9. 07-16-2006, 08:50 PM #9
    Lifted79CJ7
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    That is awesome! I am so glad that you stuck to your guns and built that truck - I think it's funny as hell! You have any pics of that engine in it's new home?
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  10. 07-16-2006, 10:52 PM #10
    KJMac
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    Thanks!
    No I wouldn't run that cam in my stock 360 ! I'm leaning toward the 270 Comp!
    `81 CJ5,304,T-176.
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