GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

REAL DISAPPOINTED WITH MY LT's

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Old Apr 28, 2008 | 06:01 PM
  #61  
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From: Sealy/Katy TX
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good converter though
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Old Apr 28, 2008 | 08:46 PM
  #62  
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From: Walker
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Yeah only Yank and P.I. would even cross my mind when considering a converter.
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Old Apr 28, 2008 | 08:47 PM
  #63  
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Originally Posted by cmitchell17
Do the newer 5.3s have as much low end torque as the older 5.3s? On the gm media site the newer 5.3 don't have as much torque down low and the torque peak comes at a higher rpm?
Main reason you see this is because the stock tune has a huge disadvantage off the line.
It retards the full power for 4 secs when you floor it. But with a simple tune they come alive like you would not believe.
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Old Apr 28, 2008 | 09:02 PM
  #64  
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4 seconds? It's delayed that much? Is it different from say the 99-02 vs 03-07Classic.

For that matter, since the 07-08, has more power, is it held back even further?
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Old Apr 28, 2008 | 09:09 PM
  #65  
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yeah id say about 4 seconds,got my *** handed to me by a titan last month.Light turned green and he was a good 2 car lengths ahead before I really even got goin
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Old Apr 28, 2008 | 09:29 PM
  #66  
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I didnt think they rated it with the pe delay. But then again the engines are SAE rated now so maybe they can't sneak that by anymore.

My 2000 5.3 dint have a pe delay stock but the newer ones did. Mine might have had a one second?

Everyone thinks tm is what kills the low end but I think its the pe delay.

The new ones look like there held back untill about 4000. What rpm do they bypass?

http://media.gm.com/us/powertrain/en..._Silverado.pdf

http://media.gm.com/us/powertrain/en...M7_Express.pdf
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Old Apr 28, 2008 | 10:14 PM
  #67  
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From: houston
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Originally Posted by Wheatley
good converter though
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Old Apr 28, 2008 | 11:38 PM
  #68  
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sierra, what was your 1/8th mile time and speed?
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Old Apr 28, 2008 | 11:48 PM
  #69  
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Originally Posted by sierraboy
hey sierraboy, Did u happen to run a truck Identical to yours on 225 like two sundays ago. I
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Old Apr 29, 2008 | 01:11 AM
  #70  
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get a PI cant go wrong with that..its the one i got and im happy with it..
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