Desktop Dyno 2000

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Cerwin

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I just got desktop dyno 2000 for free from my new bestest buddy at the machine shop. but when i enter all my info in, it says 296 hp at the fly!

this doesnt even sound remotely close to what i have had people guesstimate! could it be? only 300 hp? they were around 300 from the factory.

73 360 SB
.03 over
flat top pistons[9-9.5:1]
stock crank
eddy rpm heads[2.02/1.60]
rpm cam and lifters.
rocker rollers[most likely crane]
tti headers[thermal in/ polished ceramic out]
rpm intake[1500-5500]
700cfm [4bbl carb]

all balanced.

This seems really low, could it be the program? or the operator?
Thanks again guys,
Cerwin
 
Go dyno it or run it down the 1/4. Desktop dyno is a rough, rough estimation of things in my opinion. my 318 puts down decently over 300hp at the fly and is not even close to yours..
 
The RPM package on a 9.5:1 340 makes just over 400hp so you should be right there.
 
From the tech Archives.

http://www.forabodiesonly.com/mopar/showthread.php?t=1175

Package five:
This package is a little more pricey but it is a bolt on package with all parts right out of the box using the Edelbrock RPM parts/package. 360 rebuilt with stock crank and rods, block bored .030" over, 9.5 to 1 flat top pistons. Edelbrock RPM heads, RPM intake, Performer 750 carb and RPM camshaft with .488" lift and 308 advertised duration, installed at 110 intake centerline. Timing was set at 34 degrees total.
399 h.p. @ 5,500 rpm
438 lbs. of torque @ 4,250
Package five-B:
The above motor was tried with a modified Holley carb flowing over 800 cfm and having .076" front jets and .080" rear jets.
430 h.p. @ 5,750 rpm
469 lbs. of torque @ 4,000 rpm
 
The power in this engine is amazing for what is in it.

Package nine:
360 rebuilt with 10:1 compression flat top cast pistons, original crank turned .010"/.010", rebuilt factory rods. Factory windage tray installed. 2.02" heads with competition valve job and ported to flow 260 cfm. Edelbrock RPM intake, port/gasket matched. Holley H.P. 750 (.076" front, .080" rear jets). Large 1 3/4" primary tube headers. Comp Cams 305AH-8 camshaft with .525"/.540" lift and 305/312 degree advertised duration, 253/260 degrees @ .050", 110 lsa, installed at 108 intake centerline. This motor is a brute for a street car and would only be considered a weekend blaster.
495 h.p. @ 6,000 rpm
500 lbs. of torque @ 4,500 rpm
 
i look mostly at desktopdyno as an evaluation program that will give me a a good idea about how the torque and horsepower will look as curves on a screen to see how the engine may behave, if it will make alot of power high in the range, short peak or long nice flat torque all over the RPM range, i dont look to close on what the engine will do in raw ´numbers...
i think just like adam that package should give you about 400Hp and a real nice runging engine, a friend of mine have the whole performer rpm package on his 383chevy engine and desktopdyno showed about 300horsepower in that package also but i have had many rides in that chevy and its way more than 300horses its a torquemonster that makes some realnice higherrpm power also
 
I should get a Desktop Dyno just to play around with different components to see what is the best combination. You have to remember the program is just a guideline and not etched in stone. I have a friend/customer that has a
g-tech but realizes that its readings are close but not entirely accurate.
Build your engine according to what you have learned and if you need, find
a engine or chassis dyno to confirm the numbers. Most of the guys that
run at the drag strip build the engine combination of their choice and continually change and tune it to make it go faster and hook harder.
Mike
 
Thanks Adam. That sounds about right.. Option 5. Atleast thats what im aiming for.. anything more then that then im losing everyday drivability for what i want to use the car for. i messed with it a little more and made a killer 340..
1147hp at the fly @6500rpm
1475tq at the fly @2000rpm

this thing is fun! stupid but fun.. :wav:
 
Cerwin, the program actually isn't to bad. Now do realize the program is a $40 item. There are programs out there that run into the thousands.
The most important item for the DDD sim is acurate info, everywhere. Most every build you log data into will require a dual plane intake. The single plane is a race item only and will not give a acurate sim read out. Your not going to gain 50HP on a small engine with Hyd. cam and small tube headers. It's just not real. But the sim reads it differently.

Get the cam card and know exactly what the comp. ratio is. Figure in the pistons valve reliefs into the head cc for ease.

Remember this program doesn't know what cylinder head your running. "J" headed open chamber or the 318's 302 closed chambered head. Just the valve size and how well it moves air at the lifts you input. Also note that you can change the level or depression drops of the head on some DDD's.

Does the head flow the numbers @ 28 or 20 inches of merc.?
 
Also, when you get to understand cams a bit more, you can change the valve timing events around and you can come up with some interesting results.
 
rumblefish360 said:
Also, when you get to understand cams a bit more, you can change the valve timing events around and you can come up with some interesting results.
Click to expand...


Would tti's on a 66 be concidered small headers or large? small right?
 
Good question. There a stepped header, so there a trade off, or combo there of.
Try this. Enter the specs for the Edelbrock RPM packeage and mess with the header size. Use small tube first.

The only time I have seen any comparo was something Mopar Muscle mag did on a 300/360 create engine. I think they need to do another.
 
rumblefish360 said:
Good question. There a stepped header, so there a trade off, or combo there of.
Try this. Enter the specs for the Edelbrock RPM packeage and mess with the header size. Use small tube first.

The only time I have seen any comparo was something Mopar Muscle mag did on a 300/360 create engine. I think they need to do another.
Click to expand...

Haha, ya i dunno, i dont see why you all are soo hoora to have this.. its confusing man, plus im just starting to get into it all and i feel lost when it comes to all these numbers.. Ugh.. so far i have entered as much as i can and i can get 405hp at 5575rpm.. option 5 from Adams list!

but with large race stepped headers.. i get..425hp@5510rpm
oh man my heads hurts.. oye vahy!!! :thumbup:
 
I have Desktop dyno also and I've noticed exactly what Rumble says. Exact input is crutial to getting it close to what your engine is really doing. Head flow numbers and actual cam timing makes all the difference in it's readings. I remember seeing 2 different articles in the past that magazines did testing desktop dyno's accuracy (one 350 Chevy and one 440 Mopar). In both cases when they entered the head flow numbers and cam timing events then dyno'd the engine it came out real close. One was only 5 hp off. IIRC the other was about 20 hp off.
 
Jeff, take the EZ road.. :lol: :lol: Ask eveyone that has a done out 360 to state what they have for HP along with parts or the package deal, then (pick your HP) and go nuts.. :toothy7:
 
Cerwin said:
Haha, ya i dunno, i dont see why you all are soo hoora to have this.. its confusing man, plus im just starting to get into it all and i feel lost when it comes to all these numbers.. Ugh.. so far i have entered as much as i can and i can get 405hp at 5575rpm.. option 5 from Adams list!

but with large race stepped headers.. i get..425hp@5510rpm
oh man my heads hurts.. oye vahy!!! :thumbup:
Click to expand...

Well, I'm not exactly a big flag waver of this program. But it is a good tool to learn from. I'll go over option #5 later and see what I come up with and what adjustments and such I do to come up with what and how.
 
OUTLAW said:
why doesnt someone post a copy of this program and we can all evaluate it ?
Click to expand...

More then likely, depending on the program/s...Copyright laws. I'm Sure FABO would hate some kind of fine. #-o I know some are free, but may only be intended for personal home use and not allowed to be installed or used on sites. :sad:
 
69signetv8 said:
More then likely, depending on the program/s...Copyright laws. I'm Sure FABO would hate some kind of fine. #-o I know some are free, but may only be intended for personal home use and not allowed to be installed or used on sites. :sad:
Click to expand...

:thumbup: Otherwise i would have posted my burnt copy for all! lol :wav:
 
hell then email it to me and I will post it on my site for all to get. I ran a warez (pirated software) site for 4 years with out one complaint .They'd have to be a member to even know it was here ..LOL
 
OUTLAW said:
hell then email it to me and I will post it on my site for all to get. I ran a warez (pirated software) site for 4 years with out one complaint .They'd have to be a member to even know it was here ..LOL
Click to expand...


We have already had Prime Media email Joey about pictures from there Magazine posted. We dont need MR Gasket pissed that we are giving away free cpies of there Dyno 2000.
 
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