I bought Desktop Dyno Basic software a few days ago and have been playing around with it to help plan my new 289 block. Having one prepared by a shop as my original cracked at the oil pressure outlet boss. Anyway, I was wondering if anyone else has used Desktop Dyno? I am getting torque and hp results that are unbelievable, even if they are flywheel figures, not rear wheel numbers. The software program is interesting but a bit quirky to. Any input from other users?

I mean I have run a simple 289 bored .030 with Edelbrock Performer intake, 600 cfm carb, Performer Plus cam, flat top notched pistons, Trick Flow heads, small tube headers (JBA shorties) with mufflers and I am getting 350 hp at 6000 rpm and torque of 368 ft. lbs. at 3500 rpm on Desktop Dyno! Woof! Some 289!

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Heck no, That thing costs tooo much..... but i know you will let me borrow it.

 

i have an older version of it that i got for free. it seems ok, but i haven't been able to test its accuracy yet.

 

Youd be surprised what those heads will do for a windsor small block. I bet those trick flow heads are what is makin those numbers look soo high, i bet they arent far off though

 

I never took the numbers seriously. What its good for is plotting a torque curve from about 2500-7000. The numbers are most often inflated from what you get in the real world, so I used it to compare cam profiles and see what differences in duration and lobe separation did to the torque curve.

Its easy to get great numbers from it, if you consider those numbers to be the max the combo can make, instead of what it will make, then its a usefull tool.

The funniest one I made was 2000ftlbs around 3000 rpm by maxing everything out except the cam... I have the older version, but they havent changed it alot imo.

 

The more accurate the input, the more accurate the output. It's best to use actual flow numbers for the heads and of course the cam card specs. I've used the earlier version which had some quirks, but as long you recognize them and what causes them, you can start over and avoid them. My combo resulted in 418 hp and 435 trq...at sea level, but I live at 5000 feet.

 

Yeah, if nothing else, it is good for comparing changes. I did use all the exact specs for the cam, intakes etc. I will be happy with 320 hp and 310-20 torque in this new motor. But wow, Desktop Dyno is almost scary, LOL.

 

I've used it in the past and based a couple of SBC engines off the specs and got pretty accurate readings. I like the program alot. If anyone wants it i'll package it in a .zip and send it to you. Just send me a PM.

 

Dude, is this software vehicle specific or does it work on all engines, combos, etc??

 

How much is this dyno software? or where could I download one for free? anyone know?