Author Topic: My 505 Dyno results  (Read 1501 times)

Offline 74BlueFish

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My 505 Dyno results
« on: September 04, 2016 - 09:54:23 am »
Finally got to the tuner to dial in the Megasquirt engine computer.  Thanks to all for all the advice on my build.
504 HP and 541 Torque at the rear wheels.  Dynojet           90 degrees outside yesterday and 80% humidity in Fort Lauderdale, FL
Adjusting for drive train losses at 15%, that's
580 Hp and 622 Torque at the flywheel.

The graph was recorded in MPH not RPM on this pull, so
40 mph = 1830 rpm
60 mph = 2750 rpm
80 mph = 3700 rpm
100 mph = 4600 rpm
120 mph = 5600 rpm
140 mph = 6500 rpm


Dyno  Results for  505 Stroker
Eagle Stroker  Kit. .030 over
TTI Headers, X pipe,  Exhaust  3
Dynomax Ultraflow
Lunati Hyd Roller Cam   20230712
.535 In    .550 Ex     Duration  at .050  231 In   239  Ex        RPM  2200 6200
PRW Roller Rockers  1.5
Edelbrock Performer RPM heads
Edelbrock Pro-Flo XT Intake Manifold 
90 mm Throttle body,   55 lbs. injectors, Sequential fuel injection
Coil Near Plug running with Megasquirt  3 Engine Computer
Compression Ratio  10.8
Viper T 56 Transmission,  Dynoed in 4th gear,     3.55 differential
Pump Gas 93 Octane
All in timing 32 degrees
Timing was original 36 degrees,  moved to 32 degrees in increments and HP stayed the same, but torque increased 30 ft/lbs

Video of the pull


Dan




Offline dfrazz

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Re: My 505 Dyno results
« Reply #1 on: September 04, 2016 - 10:03:51 am »
Those are some great numbers, it will be a handful on the street for sure!  She sounds solid too.  Thanks for posting.  Our 505 builds are very similar except I'm staying with a Proform 850 carb. I will try to get mine on the dyno when I get it in and compare numbers.  Altitude will make a difference but it will still be interesting to see.

Offline Chryco Psycho

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Re: My 505 Dyno results
« Reply #2 on: September 04, 2016 - 10:05:50 am »
Sweet  :2thumbs:
love the tq "curve" almost flat all the way up

Challenger - You`ll wish You Hadn`t


Offline 74BlueFish

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Re: My 505 Dyno results
« Reply #3 on: September 04, 2016 - 10:20:16 am »
I'm Happy,    Thanks for your help Chryco, with the cam choice.

Dan
Dan

Offline Chryco Psycho

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Re: My 505 Dyno results
« Reply #4 on: September 04, 2016 - 10:28:33 am »
You are welcome
 it seems typical for a stroker  the cam is listed for 2200 -6200 & is working more from 1500-5300 . so it should be a monster on the street with tq everywhere & no need to shift above 5600 , heads are probably limiting the upper power band but it will live forever as it is not beating up parts

Challenger - You`ll wish You Hadn`t

Offline RzeroB

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Re: My 505 Dyno results
« Reply #5 on: September 04, 2016 - 10:36:53 am »
Heads are probably limiting the upper power band ...

 :iagree:  with that kind of neck-snapping torque your "head" is the limiting factor - any more torque and you will need a HANS device for driving! :grinyes:
Cheers!
Tom
St Louis, MO

Former owner of 16 classic Mopars. "It is better to have owned (Mopars) and lost then to have never owned at all" (apologies to Alfred Lord Tennyson)

Offline onebadfish

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Re: My 505 Dyno results
« Reply #6 on: September 04, 2016 - 11:10:12 am »
Awesome numbers for sure!  :2thumbs: Traction will surely be an issue!

Offline HP_Cuda

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Re: My 505 Dyno results
« Reply #7 on: September 04, 2016 - 01:38:44 pm »

Lots of torque down low, funny our builds are somewhat similar but you are running EFI.

Would be cool to see a delta with a carb like Frazz says.
1970 Cuda Clone 440 4 speed - sublime green
1970 Cuda 383 4 speed - yellow - SOLD

Offline 74BlueFish

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Re: My 505 Dyno results
« Reply #8 on: September 04, 2016 - 04:32:46 pm »
With the .5 overdrive I'm at 1600 RPM at 70 mph,  right where the torque just comes in.   That's why I didn't go with the next bigger cam

Dan
Dan

Offline dave73chally

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Re: My 505 Dyno results
« Reply #9 on: November 25, 2016 - 09:32:59 am »
Good stuff! I'm using some of the same parts as well. Did you work your heads at all or are they out of the box?
73 Challenger
512 / 4spd / Hotchkis & QA1 Suspension

Offline Road_Runner

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Re: My 505 Dyno results
« Reply #10 on: December 24, 2016 - 07:34:40 pm »
You are welcome
 it seems typical for a stroker  the cam is listed for 2200 -6200 & is working more from 1500-5300 . so it should be a monster on the street with tq everywhere & no need to shift above 5600 , heads are probably limiting the upper power band but it will live forever as it is not beating up parts
This is exactly what I'm looking to get out of the Roadrunner's 383 stroker, want to do it once and do it right.  Its one reason I'm leaning to the 489 vs the 450 just to get the extra torque & HP without having to make it high strung & unstreetable. 

Later, Jim
1970 383 Roadrunner Tor Red
1973 318 Barracuda Mist Green
2014 Mustang GT/CS Convertible All Black

Offline 1 Wild R/T

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Re: My 505 Dyno results
« Reply #11 on: December 24, 2016 - 07:44:29 pm »
I noticed this  "Timing was original 36 degrees,  moved to 32 degrees in increments and HP stayed the same, but torque increased 30 ft/lbs"   Everyone sez 36-38 is best for a Mopar big block... But quench changes that... Less timing cause the mixture burns faster... :thumbsup:
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Offline brads70

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Re: My 505 Dyno results
« Reply #12 on: December 24, 2016 - 10:20:06 pm »
I have the same cam in my 451"  Sounds like a nice engine! Now go order some rear tires now!  :icon16:

http://www.lunatipower.com/CamSpecCard.aspx?partNumber=60312
Brad
1970 Challenger 451stroker/4L60 auto OD
Barrie,Ontario,Canada
Proud to own one of the best cars ever made!!!!!

My restoration thread 
http://www.cuda-challenger.com/cc/index.php?topic=59072.0
 My handling upgrade post
http://www.cuda-challenger.com/cc/index.php?topic=73985.0

Offline usraptr

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Re: My 505 Dyno results
« Reply #13 on: December 25, 2016 - 01:35:46 pm »
Very nice.  :2thumbs: Love the sound of the exhaust system.   :ylsuper: That's exactly what I'm going to run my 512 stroker but it isn't installed yet.  It was nice to hear what it will actually sound like.  Do you get any drone from those mufflers?
1970 Plymouth 'Cuda.  Matching numbers 440 U Code, 4 speed pistol grip, Rallye dash, AM 8 Track, Shaker hood, 15 inch rallye wheels, Dana 60 4.10, Super Track Pak.  One of 134 - 440 "U" coupes codes built in 1970 and one of 100 - 440 Super Track Paks built in 1970.

Restoration pictures at:  http://spanks4thememory.smugmug.com/Cars/70-Cuda/7240639_M24oi#465274575_2MBqW
(Edited 8-1-17)

"usraptr" = United States raptor - bird of prey = United States Bald Eagle.  FYI, somebody else thought of it first so I had to drop the "O" in raptor.