ok I have used Dyno 2000 for Two other motor Builds and it came with in 10 Hp of the actual Dyno Numbers. Now That I am diving into TPI I am Testing engine combos on Dyno 2000 and I am not sure how I would figure the MANIFOLD TYPE because TPI tells Dyno 2000 it is a LTR style and Single Plane has a totaly different Plenum Size.

Any help Please

 

Well the Holley Stealth Ram is a tunnel ram style intake. So you can use that when figuring out how an engine will run.

 

i've got all kinds of heads/cam files, but i dont think anyone has made intake files.
that'd be neat if they could/did.

 

You cant make intake files. There is no adjustment, you only have what they give you. Like said before, the HSR is a tunnel ram. So use tunnel ram....

 

Which is what I posted earlier in this thread. Use the Tuned Port style for TPI, and the Tunnel Ram setting for the HSR motors.

If you are using a stock throttle body set the maximum air flow at 660cfm for the closest approximation of air flow.

 

The only down side to that is the flow characteristics are going to be slightly different, because the tunnel ram is intended as a wet flow manifold, and holley adapted it to dry flow/port injection. Not sure if DD2000 takes wet/dry flow into account or not, but it's a definate difference between the two

I was trying to decide the best way to map out my new intake setup with DD2000, and also ended up going with the original type. Since mine is based off of a single plane manifold, that's what I selected. Tuned port is completely inaccurate, since this new setup is "untuned" runner length similar to what you would find on HSR, LT-1 and the like.

 

I gave you recognition :hail: lol

 

LoL, I was tired, whenI wrote that all I saw was "Like I said..."

One thing to note about DD2000, even when using a roller camshaft in RL, its better to make DD think its a Hyd. Flat tappet camshaft. I heard this from them because for some reason (I don't claim to understand) DD can't handle Hyd. Roller correctly.

Hyd. Roller settings in DD produce MASSIVE torque numbers, much higher than you'd find in RL.

 

I NEVER use "roller cam" or even "small tube headers with exhaust"

I just use Solid when I am figuring roller cams, and HP manifolds instead of headers because they both give too much...

And when I do that all my desktop drag runs are within .05 of actual!!!

 

also when figuring the cfm, use 1.5 Hg 2 barrel. because the TB are only 2 barrels.

 

I hate to bring threads this old back to the top, but does anyone have or know where to get cam files other than what is listed? And also where can I get the files for different heads? I would like to use files that are as close as possible if not exact to the setup that I plan to run as well as what I am running now. Thanks.

John

 

What setup are you running? I have a bunch of cam files that I made right off the cam cards.

 

right now, everything is stock with exception of LT's and a complete custom exhaust.

here is what i am planning to run:

https://www.thirdgen.org/techbb2/sho...hreadid=268596

Thanks for the help.

 

Someone please explain to me what they want in DD2000 when it asks for IVO (BTDC), IVC (ADBC), EVO (BBDC), and EVC (ATDC). I am trying to figure all this out, so if anyone can give me a few pointers I would appreciate it.

 

those four parameters in the cam section are like.... one of the single most important aspects that determine the curve. They're called the valve events given in crankshaft degrees, which determine the shape of the cam.
IVO = Intake Valve Opening (in degrees Before Top Dead Center)
IVC = Intake Valve Closing
EVO = Exhaust Valve Opening
EVC = Exhaust Valve Closing
These are the numbers from which duration and everything else except lift is calculated, and you need to pay attention as to whether they are presented as advertised or .050" lift. The majority of cam specs you see at summit, jegs etc. are given in .050" lift durations.
Advertised duration specs cannot be ignored however, because the difference between the advertised duration, and the .050" duration is an indication of how quickly the valves open. Generally, less variation between the advertised and .050" specs are better in roller cam applications. Just make sure u're valve springs are up to the task.
There's a lot more that can be said about these four very important numbers, but I'll stop now n' everyone else can chime in.

 

1320...thanks for that info. I looked at the Instruction Manual for DD2000 and found that info, but forgot to edit my previous post. Again, thanks for the in depth info.

 

The max lift on all my files is about .480 (Cam is for a 305), so I can't help ya very much