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

Dyno Numbers!

Old Jun 22, 2004 | 06:23 PM
  #1  
Steve0's Avatar
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From: Hartford, CT
Talking Dyno Numbers!

Well, I took my car to get dynoed today. My mods consist of:
Throttle body bypass - free!
Moroso CAI - $75 used
Mac Mids - $250 used
Magnalfow muffler - free

Other than that, there was a fresh plug and wire change about 6,000 miles ago. There is a stock replacment 3in catylitic converter from Mieneke on the car as well.

My car put down 278hp and 310lb-ft of torque.

From looking at the chart it seems horsepower peaked at about 5300rpms. The torque curve was flatter than Calista Flockhart from 2000-4500rpms, making over 300lb-ft the whole way across.

The air/fuel ration was a little lean on bottom, and rich up top.. 12.7 at around 5400rpms. Black smoke was pouring out the pipes on the dyno.

I'll try scanning the sheet and get it up tonight. For exceeding the stock crank rating with $325 invested in perfomance mods, I'm pretty happy.



Edit- Here's a picture of the dyno sheet

Last edited by Steve0; Jun 23, 2004 at 03:13 PM.
Old Jun 22, 2004 | 06:32 PM
  #2  
roadtrip120's Avatar
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From: Amarillo Texas
Nice numbers


i got 285rwhp and 318 tq
all free mods- free
cut out- 30
stock air box- free
programing- 20
gutted cat- free

Realizing that someone else spent less money than you-- Priceless, LOL


just kiding

Nice numbers
Old Jun 22, 2004 | 06:34 PM
  #3  
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From: High Orbit


Did you leave the dyno thinking "good stuff! Now I gotta get this, that..." lol I always do
Old Jun 22, 2004 | 06:35 PM
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Looks good man and good TQ #'s for the money invested.
Old Jun 23, 2004 | 12:44 PM
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12.7:1 A/F ratio at 5,400 rpm is not "rich" - you shouldn't have seen black smoke pouring out.... probably just about where you want it (12.8-13.2). "Rich" is the stock PE target A/F ratio of 11.7:1, and that is what you usually see on a stock motor, costing you about 15HP. Might want to recheck the numbers.
Old Jun 23, 2004 | 03:14 PM
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Originally posted by Injuneer
12.7:1 A/F ratio at 5,400 rpm is not "rich" - you shouldn't have seen black smoke pouring out.... probably just about where you want it (12.8-13.2). "Rich" is the stock PE target A/F ratio of 11.7:1, and that is what you usually see on a stock motor, costing you about 15HP. Might want to recheck the numbers.
Alright, thats just what the dyno operator told me. He said it was a little lean down low, little rich up top, but nothing to worry about. I just attatched a picture of the dyno sheet to the origional post. I guess everything is fine then.
Old Jun 23, 2004 | 03:31 PM
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Congratulations. Looks like good numbers to me.
Old Jun 23, 2004 | 04:50 PM
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Real nice numbers for your mods. I hope I can put down something like that when I go in a few weeks.
Old Jun 23, 2004 | 06:47 PM
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nice numbers man, thats pretty strong for your mods. i saw you at chargrill a couple weeks ago, car sounded good! where did you get it dynoed?
Old Jun 23, 2004 | 07:16 PM
  #10  
Steve0's Avatar
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Originally posted by screamin94Z
nice numbers man, thats pretty strong for your mods. i saw you at chargrill a couple weeks ago, car sounded good! where did you get it dynoed?
I got the car done over at Carolina Auto Masters. The owner there Jeff is really cool and enthusiastic. He actually made the dyno experience exciting in a way , and answered all of my questions about how the car was performing and where to go next with my mods.

You were at chargrill? Were you there with your car? Doesnt your car have Y2K Vette wheels on it? I missed you.
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