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Old January 14th, 2009, 11:15 AM   #1
SANDVIPR
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Default Desktop Dyno

Does anyone here have it and use it much? Is it worth the money to shell out for it? How about accuracy???
I'm putting a motor together and wanted to run through some different combinations and profiles, but wanted some feedback first....

Thanks!
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Old January 14th, 2009, 11:32 AM   #2
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its a neat program as you can put in different profile camshafts and see the changes in torque/hp and where the curve is. Is it 100% accurate, no.
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Old January 15th, 2009, 04:06 PM   #3
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anyone else have any imput on this???
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Old January 15th, 2009, 06:26 PM   #4
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Meh, don't bank on the actual HP numbers, but you may be able to see a some changes from one combo to another with an increase/decrease, but I've seen a lot of the numbers to be a little inflated.
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Old January 15th, 2009, 07:53 PM   #5
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I wouldn't buy i. I used it when I built my stroker and no matter what I chaged I was only able to change the power numbers by +/-4. I'm sure its pretty close to what the motor is putting out, but it didn't change a lot based on valve lift, duration, stroke, intake.....

If you were closer I would let you borrow my copy.
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Old January 15th, 2009, 08:00 PM   #6
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I've been using the free Comp Cams set up. It seems relatively close and you can change most everything.
http://compcams.com/camquest/default.asp
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Old January 15th, 2009, 08:27 PM   #7
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I would say if you put good information in you get some pretty good information out. I have Dyno Sim by Pro Racing Sim, it's almost identical to Desktop Dyno 2000 because they created the software for Mr. Gasket, it's just sold under a different name.

My "A" headed 598 in the real world made 995hp @ 7200 and 820tq @ 5900 on a DTS dyno, the software says 1005hp @ 7300 and 814tq @ 6000. That's pretty dang close. I created the airflow files for the heads when Charlie ported my heads, so good information is essential. Software is no replacement for the real thing but it is fun to tinker with and see what happens.


The camquest link posted above is relatively close but only offers off the shelf cams.
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Old January 18th, 2009, 10:40 AM   #8
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Awesome! Thanks for the heads=up and the link. I've been meaning to check that one out, but have been too tied up lately to do it.
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Old January 18th, 2009, 08:51 PM   #9
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Quote:
Originally Posted by Plato2k5 View Post
its a neat program as you can put in different profile camshafts and see the changes in torque/hp and where the curve is. Is it 100% accurate, no.
X2. I built my 416 stroker in there first. It was lower by about 25 hp. Mostly due flow numbers on the heads.
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Old January 18th, 2009, 09:16 PM   #10
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Id say it is accurate with in 10%.
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Old January 19th, 2009, 09:38 AM   #11
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Tim, Your cousin Shaine has it on his computer at home right now. We have used it on a number of our race engines as a guide not the bible. It is usually within 9-14%. The new LS numbers will be tested by us this spring at Baker Engineering. A couple of our friends are registered for Pinks in July and they are going all out. I cant wait.
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Old January 20th, 2009, 09:58 AM   #12
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Thanks Cooter! I'll catch up with him after I get my cam specs and see what we can get out of that thing....
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