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    Author Topic: 383 Dyno Result at the Rear Wheels  (Read 4867 times)

    Offline XBRIT

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    383 Dyno Result at the Rear Wheels
    « on: December 16, 2012 - 03:07:40 PM »
    I thought I would share my Dyno result with the forum with some feedback. I must admit I was expecting better results.
    1970 383, Edelbrock 650 4 Barrel, 1 3/4" Headers, 3" Flowmaster
    My friend with 70 Charger 440 Six pack, same Dyno, but Auto got worse results at the rear wheels. 
    Cheers
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    Offline johannes

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    Re: 383 Dyno Result at the Rear Wheels
    « Reply #1 on: December 16, 2012 - 06:08:14 PM »
    Nice flat torque curve   :bananasmi :bananasmi :bananasmi
    Did you do any tweaking to the engine whilst at the dyno?
    ....... ignition advance can make quite a difference....as I'm sure you know...
    If you are too disappointed, guess you can allways try Nitrous ....   :burnout:
    Please, can you add some notes on the tread we made on gasmilage?
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    Offline XBRIT

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    Re: 383 Dyno Result at the Rear Wheels
    « Reply #2 on: December 16, 2012 - 06:33:47 PM »
    yep, it was tuned up while on the Dyno and also changed some carb. jets.
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    Offline HP2

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    Re: 383 Dyno Result at the Rear Wheels
    « Reply #3 on: December 16, 2012 - 06:52:52 PM »
    That looks about right. Figuring the gross power back in the day was 335 ( at the flywheel with no accessories), you are only around 60 horses short of the gross in an "as installed" and through the transmission, which is a very accurate measure of a net power number.
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    Offline 73restomod

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    Re: 383 Dyno Result at the Rear Wheels
    « Reply #4 on: January 10, 2013 - 04:12:02 PM »
    Considering the motor sounds mostly stock, thats a healthy number.
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    Offline todd383

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    Re: 383 Dyno Result at the Rear Wheels
    « Reply #5 on: January 12, 2013 - 08:31:54 AM »
    there decent #s, but if your running  3" exhaust, thats killing you!! especially tourque , my 383 is modified and made over 385 at the wheels, i was runnin 3" exhaust and went back too 2 1/2" tti with dynomax muff, and gained over 20 ft. lb. tq at lower rpms, and no loss at the top. and much quieter!! :woo:
    « Last Edit: January 12, 2013 - 08:39:56 AM by todd383 »
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    Offline Super Blue 72

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    Re: 383 Dyno Result at the Rear Wheels
    « Reply #6 on: January 12, 2013 - 10:55:22 AM »
    Looks way better than what I will ever have with a stock '72 340. 

    With 240hp at the crank, I probably got like 180hp at the wheels if even that...  :walkaway:
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    1972 Dodge Challenger Rallye 340, AT, Code TB3=Super Blue, SBD=8/17/1971.  Yes, a Rallye without the fender louvers from the factory because of the body side molding option.

    Pic #2 and 3 of my ARII 1/24 scale model car 

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    Offline BIGSHCLUNK

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    Re: 383 Dyno Result at the Rear Wheels
    « Reply #7 on: January 12, 2013 - 11:37:13 AM »
    I thought those were respecable specs, I do agree on the 3" exh tho...
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    Offline 73restomod

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    Re: 383 Dyno Result at the Rear Wheels
    « Reply #8 on: January 12, 2013 - 08:37:44 PM »
    Yeah, 3 inches is a little big for a stock 383, but if you get a slightly hotter camshaft, and some porting done it would be perfect. I'd say it's the perfect reason to crank up the juice.

    Sent from my DROID RAZR using Tapatalk 2
    « Last Edit: January 12, 2013 - 09:59:38 PM by 73restomod »
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    Offline DocMel

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    Re: 383 Dyno Result at the Rear Wheels
    « Reply #9 on: October 05, 2013 - 10:01:17 AM »
    Those TQ numbers are great.   HP not bad either. 

    Remember, those old factory qouted "HP numbers" were a numbers game:  They were taken off an engine that was tuned, no air filter, no assesscories, headers and sometimes no exhaust, and taken of the crank/flywheel

    If you got another intake (Im assuming yours is stock) and a good set of heads, youll go about 330 horse, but it could effect your TQ curve some

    A mild cam would wake it up some too

    I agree with tweaking the carb and timing   A good dyno shop will do that for you.  Carb alone, with minor tunig, I have sen go up 5-8 HP easy  Same with timing 

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    Offline Chryco Psycho

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    Re: 383 Dyno Result at the Rear Wheels
    « Reply #10 on: October 05, 2013 - 10:14:49 AM »
    What dyno was used ? The Mustang dynos are heartbreakers you get about 15% higher #s with a dynojet .
     I bet the car performs well as is though , I would swap to a Proform 750 for a bit better power
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    Challenger - You`ll wish You Hadn`t
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