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

Why does my horsepower drop off so fast?

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Old May 15, 2004 | 10:43 PM
  #1  
speed_demon24's Avatar
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From: Ocala, Florida
Why does my horsepower drop off so fast?

This has been bothering me for months, looking at my dyno chart my HP drops off like a rock. Compared to other LT1's, their HP doesn't drop off even close to as fast as mine.
http://www.ls1camaro.net/freehosting/dyno-sae.jpg
http://www.ls1camaro.net/freehosting/afresized.JPG

Last edited by speed_demon24; May 15, 2004 at 10:47 PM.
Old May 15, 2004 | 10:50 PM
  #2  
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Looks normal to me. Adding a cam with higher duration will shift the HP up and not fall off like the stock cam does.

You also have to keep in mind that most curves that you see with the stock cam only go up to 5700 rpm, and you spin up to 6100. You will see the dropoff on your dyno chart, but you don't see it if you only spin up to the stock redline.

Also, your 1.6RR's make the curve more peaky.

Dan

Last edited by stereomandan; May 15, 2004 at 10:52 PM.
Old May 15, 2004 | 10:51 PM
  #3  
speed_demon24's Avatar
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Also, can anyone guess what the dips in the graph are?
Old May 15, 2004 | 10:53 PM
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I would guess Knock Retard. I've heard that it shows up as a zigzag.

Dan
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