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

Another A.I. 200cc dyno but w/ an A4....

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Old Dec 31, 2007 | 11:28 AM
  #16  
TravisA's Avatar
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Originally Posted by ssbowtie1
What the hell happened to your car at ~4200rpm on that last run?
Supra Loop as my tuner called it...lol

Thats when the converter locked at WOT. When the converter locked the HP jumped up and the RPM's went down and then started climbing again.
Old Dec 31, 2007 | 11:31 AM
  #17  
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Excellant numbers. What I find interesting is the horsepower increase when switching from the stock throttle body to the 58mm. A 28Hp gain. I wonder what the numbers would have been with a monoblade?
Old Dec 31, 2007 | 11:32 AM
  #18  
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Originally Posted by TravProcharged94Z
Supra Loop as my tuner called it...lol

Thats when the converter locked at WOT. When the converter locked the HP jumped up and the RPM's went down and then started climbing again.
Ahh yes, should have figured. Anyways, great numbers! Now its time to beef up the drivetrain.
Old Dec 31, 2007 | 11:40 AM
  #19  
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Originally Posted by 1989TransAm
Excellant numbers. What I find interesting is the horsepower increase when switching from the stock throttle body to the 58mm. A 28Hp gain. I wonder what the numbers would have been with a monoblade?
I wouldn't contribute all the gain to the 58mm TB.

We found out I had a faulty MAF so we tuned it for speed density. Therefore when we tested the 58mm TB we did it with no CAI hooked up. The car was begging for more air though with the stock TB. I believe my tuner said the MAP would start in the upper 90's then drop down to 90kpa under Wot. When we switched to the 58mm TB it gained 8% more airflow.

Also the car is only running 34* of timing. Since the stock fuel pump couldn't keep up 34* is all it liked. It was over 14:1 A/F on the big end. So with more fuel it may pick up a little from the better A/F and a little more timing. But I'm very happy with the #'s as is!
Old Dec 31, 2007 | 12:01 PM
  #20  
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Nice #'s... man I really need to get rid of my stock TB I'm still running..
Old Dec 31, 2007 | 12:04 PM
  #21  
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Nice numbers.Keep us posted when you get it to the track.
Old Dec 31, 2007 | 12:07 PM
  #22  
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You guys think 58mm TBs are needed or would a 52mm would be enough? And Trav, nice #s, but don't be surprised if a high stall unlocked, sucks at least 20hp or more from the graph. After a few more parts that are needed here, that car is going to fly!
Old Dec 31, 2007 | 01:40 PM
  #23  
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Are these #'s with a 12-bolt rear ?
Old Dec 31, 2007 | 03:41 PM
  #24  
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Currently still running the 10-bolt.
Old Dec 31, 2007 | 04:29 PM
  #25  
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A large stall will take another 20hp or so, but man that thing is gonna haul!!

What times you looking for?
Old Jan 1, 2008 | 03:08 PM
  #26  
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Originally Posted by <Puck>
A large stall will take another 20hp or so, but man that thing is gonna haul!!

What times you looking for?
I hope to at least hit 11.99

Do you all think i'm losing that much through the A4 compared to the M6? With the stock converter locked I figured that would give me close to M6 #'s??

Last edited by TravisA; Jan 1, 2008 at 03:10 PM.
Old Jan 1, 2008 | 03:40 PM
  #27  
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Originally Posted by TravProcharged94Z
I hope to at least hit 11.99

Do you all think i'm losing that much through the A4 compared to the M6? With the stock converter locked I figured that would give me close to M6 #'s??
Even locked will still be still less then an m6...a lot less.

Your goal is waaay too easy! I run quicker then that with quite a bit less through a stalled auto You should be pleasantly surprised on your first time to the track with it.
Old Jan 1, 2008 | 07:25 PM
  #28  
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Originally Posted by <Puck>
Even locked will still be still less then an m6...a lot less.

Your goal is waaay too easy! I run quicker then that with quite a bit less through a stalled auto You should be pleasantly surprised on your first time to the track with it.
Wow...its making the power then..

I didn't want to set the goal to high the first time out....Didn't want to be to disappointed if it didn't perform on the first pass.

I'm still undecided on whether to keep the 60e and stall it or go with a th350/stall combo.
Old Jan 1, 2008 | 08:10 PM
  #29  
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A 4L60E built by the right place is the way to go, imho...Looking at your graph I'd run a 3600 stall (even as much as 4000 if your going to be drag racing a lot) and 3.73 gears with a 26" tire or, what I run which are 4.10s and a 28" tire...Either way that thing should fly...I'd be curious what your trap will be as I'm only making 375 rwhp and trap over 121 mph...and don't worry about ET your first time out...pay attention to your trap speed which will tell you if you're making the power...

--Alan
Old Jan 1, 2008 | 09:27 PM
  #30  
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what cubic inches is a .060 over engine? i thought .040 was the max you could go on these LT1s?



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