LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

DD2003 Results

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Old Jul 29, 2005 | 10:23 PM
  #1  
eric9c1's Avatar
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From: Round Lake, IL
DD2003 Results

Hey, I tried to build a stock LT1 file using Desktop Dyno 2003 and add some mods to it.. heres what I did

Used the pre-made file GM_SBC_372_Aluminum LT1 Heads with 1.94 intake and 1.50 exhaust valves

10.4:1 CR but its showing 76cc on the heads? I dont know how to change it to 54cc (that is correct for stock lt1 aluminums right?)

Induction I have 800cfm gasoline engine, and Forced Induction (Vortech V2-S blower at 6psi) and 50% intercooler efficiency


cam: lift w/1.6rr 0.535/0.544 intake 224/236 @ 114lsa and "roller hydraulic lifters"


The numbers I show are
2000 RPM 175 / 459 tq

3000 RPM 285 / 499 tq

4000 RPM 391 / 513 tq

5000 RPM 473 / 497 tq

6000 RPM 503 / 440 tq


What do you guys think of the accuracy of these numbers?

Thanks
Old Jul 30, 2005 | 12:45 AM
  #2  
1racerdude's Avatar
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Re: DD2003 Results

That might be close with the blower.DDD isn't very accurate and ya got the inputs messed up.
It is telling ya flywheel HP.

Last edited by 1racerdude; Jul 30, 2005 at 12:47 AM.
Old Jul 30, 2005 | 12:59 AM
  #3  
eric9c1's Avatar
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Re: DD2003 Results

Yes, I know that is flywheel hp because it is an engine sim, sorry i didnt say it.

What inputs are messed up?
Old Jul 30, 2005 | 01:07 AM
  #4  
1racerdude's Avatar
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Re: DD2003 Results

Originally Posted by eric9c1
Yes, I know that is flywheel hp because it is an engine sim, sorry i didnt say it.

What inputs are messed up?
It's telling ya it has 76CC heads. The inputs on these programs have to be accurate to get a good HP figure.

Garbage in garbage out.

I have EAP and one of Lockheed's old Pro Stock programs and if the inputs are not correct it might tell ya anything.
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