Barracuda Challenger Forum

Author Topic: 383/496 stroker dyno!  (Read 565 times)

Offline Tmb84

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383/496 stroker dyno!
« on: May 09, 2017 - 10:58:27 AM »
First round, 577hp 909nm, after some tuning it delivered 616hp 976nm

Im very happy with this
70 Challenger 496 -Go mango
70 Charger 383 -Top banana




Offline 73_Cuda_4_Me

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Re: 383/496 stroker dyno!
« Reply #1 on: May 09, 2017 - 04:31:00 PM »
 :bananasmi

Awesome results!

Now I'm officially jealous... but still happy with my 340 cruiser... Have FUN!!!

 :burnout:
1973 Plymouth Cuda BS23H3B567783

R11 V6X EN2
M21 M25 M31 M88 N41 N42
V1X U B41 C56 G37 J54
JY9 A6X9 0 703 501616
E55 D34 BS23 H3B 567783

Offline cudabob496

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Re: 383/496 stroker dyno!
« Reply #2 on: May 09, 2017 - 04:47:45 PM »
what are details of engine and components?
72 Cuda, owned 25 years. 496, with ported Stage VI heads, .625 in solid roller, 254/258 at .050, 3500 stall, 3.91 rear. 850 Holley DP, Reverse manual valve body.
Up to 4000 RPM, Warp Speed, Up to 5000, Rediculous Speed, Up to 6000 RPM, Ludicrous Speed!

1999 Trans Am, LS1, heads, cam, headers, stall, etc! Love to surprise the rice rockets with this one. They seem so confident, then it's "what the heck just happened?"


Offline 73_Cuda_4_Me

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Re: 383/496 stroker dyno!
« Reply #3 on: May 09, 2017 - 05:21:31 PM »
 :clueless:

I am really curious how 'some tuning' nets 40 HP!!! What was involved with that, sheesh! I want that!
1973 Plymouth Cuda BS23H3B567783

R11 V6X EN2
M21 M25 M31 M88 N41 N42
V1X U B41 C56 G37 J54
JY9 A6X9 0 703 501616
E55 D34 BS23 H3B 567783

Offline 73cudabr

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Re: 383/496 stroker dyno!
« Reply #4 on: May 09, 2017 - 10:31:37 PM »
My first trip to the dyno I went from 250 Rear wheel to 270 after tuning and 400 dollars for the tech to change jet sizes and timing. I thought it was a good deal until the timing was so far off it wouldn't run haha. I'm sure results will vary with others.

Offline Tmb84

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Re: 383/496 stroker dyno!
« Reply #5 on: May 10, 2017 - 02:38:19 AM »
The carb is a holley dp 950, it had the same injectors front and back, the fuel was way to rich..
He went down on front injectors and up on the rear ones. The timing was also a bit high.

496 stroker kit from 440-source
Upgraded rods
Comp cam 286 roller
Edelbrock alu heads
Edelbrock performer rpm dual plane
Holley 950
MSD pro billett distributor and ignition box
TTi 1,7/8 headers
3" exhaust with open resonators
Electric water pump

2500 stall speed converter

Rwhp did go from 443 to 474

-dynapack dyno
70 Challenger 496 -Go mango
70 Charger 383 -Top banana

Offline 73_Cuda_4_Me

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Re: 383/496 stroker dyno!
« Reply #6 on: May 10, 2017 - 06:38:30 AM »
 :2thumbs:
1973 Plymouth Cuda BS23H3B567783

R11 V6X EN2
M21 M25 M31 M88 N41 N42
V1X U B41 C56 G37 J54
JY9 A6X9 0 703 501616
E55 D34 BS23 H3B 567783

Offline Tmb84

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Re: 383/496 stroker dyno!
« Reply #7 on: May 10, 2017 - 10:28:10 AM »



« Last Edit: May 10, 2017 - 10:29:56 AM by Tmb84 »
70 Challenger 496 -Go mango
70 Charger 383 -Top banana

Offline 73cudabr

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Re: 383/496 stroker dyno!
« Reply #8 on: May 10, 2017 - 02:34:00 PM »
Great numbers 700+ tq before 4000 RPMs (assuming the google conversion is correct). Are those heads CNCed?

Offline Tmb84

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Re: 383/496 stroker dyno!
« Reply #9 on: May 10, 2017 - 03:12:00 PM »
no work on heads, not sure of the compression ratio, but it need minimum 98 octane RON gas, i think that is the same as 95 R+M gas
70 Challenger 496 -Go mango
70 Charger 383 -Top banana

Offline todd383

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Re: 383/496 stroker dyno!
« Reply #10 on: May 15, 2017 - 09:19:12 PM »
Very nice! I also have a 496 383 kit ,  it makes 486 rwhp and 490 rwtq,  it's a blast!  I'm goin on 4 years now and about 20,000 of hard ass miles now, and raced it twice !

Offline CUDA8U

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Re: 383/496 stroker dyno!
« Reply #11 on: May 15, 2017 - 11:08:31 PM »
are the heads eddy rpm's?

Offline todd383

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Re: 383/496 stroker dyno!
« Reply #12 on: May 16, 2017 - 06:40:59 AM »
are the heads eddy rpm's?
  no, mine are stage 1 ported, and flow around 300, 305 cfm at around 550ish lift,  there 440 sorce aluminum

Offline 734406pk

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Re: 383/496 stroker dyno!
« Reply #13 on: May 16, 2017 - 08:57:23 PM »
That's some very strong number! Congrats! :cheers:
1973 Challenger 440 6 pack auto 3.91 rear
2012 Dodge Ram 3500 dually 6.7 Cummins Fleece EFI Live
1973 Challenger 318 2bbl auto 2.73 rear 22.5 mpg RIP
1970 Challenger TA 340 4bbl auto-Sold and sad
1999 Dodge Ram 3500 dually 5.9 Cummins Fleece tuned VGT-sold
1995 Kawasaki ZX1100E & still alive

Offline Tmb84

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Re: 383/496 stroker dyno!
« Reply #14 on: May 18, 2017 - 12:52:10 PM »
I got 472 rwhp, 140hp lost in the 727!!
70 Challenger 496 -Go mango
70 Charger 383 -Top banana