LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Very Confused!

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Old Oct 1, 2011 | 02:02 PM
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Default Very Confused!

I took one of my projects to the dyno yesterday for a few easy pulls before we started tuning it. I was pretty upset with the numbers. Now the current tune has the limiter set to 6400 and needs to be rasied. The set up consists of
LE2 Heads
Comp 306
Built bottom end
2500stall with 4.10 gears
long tube into a bullet dumped

First easy pull was 297/300
Second pull 305/302
Last pull 312/ 305

Then afterwards I noticed he did the pulls in open loop and had to call them and ask why they did that. So I went back today and did a few more pulls. Basically the same results. I readjusted the rocker arms while the car was up to temp and running. I just do get where im loosing the power at and don't see the tune making up that much of a difference. I should be in the 370hp range at least correct? If not more. I did notice the af was 11.xx and timing was 37-41. This **** is killing me and I can not sleep. Any suggestions
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Old Oct 1, 2011 | 02:23 PM
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did you do a data log on the dyno? What fuel pressure and injector?
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Old Oct 1, 2011 | 02:32 PM
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Yes FP 43.5 and injectors 36lbs and I did a log. I used datamaster and they used the dyno to do there recordings
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Old Oct 1, 2011 | 02:35 PM
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whats there to be confused about? You have a donkey dick cam, and a 2500 crappy converter with 4.10's in an auto. Learn what works together before you get all disappointed with horrible numbers.

and whats with the "easy pull" remarks? Did you just half *** the dyno pulls or is that to make you feel better about your crappy numbers?

Ive been following you and some of your previous posts for the last few weeks now and you come across like you think your a genious in the LT1 world, it seems like you dont know what the hell your doing either. have fun with your slow car.
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Old Oct 1, 2011 | 03:10 PM
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Originally Posted by 2004 Red GT-OH
whats there to be confused about? You have a donkey dick cam, and a 2500 crappy converter with 4.10's in an auto. Learn what works together before you get all disappointed with horrible numbers.

and whats with the "easy pull" remarks? Did you just half *** the dyno pulls or is that to make you feel better about your crappy numbers?

Ive been following you and some of your previous posts for the last few weeks now and you come across like you think your a genious in the LT1 world, it seems like you dont know what the hell your doing either. have fun with your slow car.
its genius **** tard....not genuious
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Old Oct 1, 2011 | 03:13 PM
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That's funny my other car with almost the exact same set up put down 420/408 with the same gears.

As for being an LT1 genius not sure where that comes from since I post about facts that I have seen and experienced. And shitty cam, its been proven to work well in the past on my other set up and many others I have seen. I say easy pulls because they did not even rev it past 6200 when this cam should make peak near 6400+. Not sure why your being suck a dick head toward me but you can **** off. I posted to see if someone might suggest something I have over looked or have not thought off. But I .can clearly see your just posting to be a dick.
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Old Oct 1, 2011 | 03:17 PM
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No one is going to be able to tell what the problem is especially since you didn't post the graph. Start with the obvious stuff and go from there. I would run it at the track to make sure it's not the dyno, but I don't see it doing anything good at the track with the horribly miss-matched combo.
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Old Oct 1, 2011 | 03:19 PM
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Originally Posted by 2004 Red GT-OH
whats there to be confused about? You have a donkey dick cam, and a 2500 crappy converter with 4.10's in an auto. Learn what works together before you get all disappointed with horrible numbers.

and whats with the "easy pull" remarks? Did you just half *** the dyno pulls or is that to make you feel better about your crappy numbers?

Ive been following you and some of your previous posts for the last few weeks now and you come across like you think your a genious in the LT1 world, it seems like you dont know what the hell your doing either. have fun with your slow car.
What a ****. I read your bio 7.7 1/8 with 1.7 60ft. I'd gladly *** rape you with my daily driver. And learn the language before using it. Genuoius boy.
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Old Oct 1, 2011 | 03:54 PM
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https://ls1tech.com/forums/lt1-lt4-m...yno-blues.html

maybe you can help each other out.
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Old Oct 1, 2011 | 04:06 PM
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the only thing in the set-up currently that might be miss matched is the stall converter. I dont understand what else would be miss matched, the cam is very simular to the le2
232/240 .578/.574 110 LSA - 2200-6400 RPM
Choppy idle. Good mid range and top end power. Minimum 2800 stall and 3.42 gears for
F and Y body. Minimum 3200 stall and 4.11 gears for B body. Comparable to Comp 306 cam.

So exactly whats so miss matched? the 2400 stall not being a 2800? because besides that everything is what had been suggested to use. The car is running to rich and i wanted my wife or a buddy to be able to come out to car shows or the races and be able to have fun without the worry of washing the cylinders out or having any other issues. The AF seemed rich on the entire rpm band, and the timing seemed a bit high as well. As for a graph i have the paper but caint scan it onto my Lap top till tomorrow at work. All the bolt ons i have and the cam alone should yeild me much better results even with the 2500 stall and 4.10 gears. I will post a graph later tomorrow.
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Old Oct 1, 2011 | 04:44 PM
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Originally Posted by 2004 Red GT-OH
whats there to be confused about? You have a donkey dick cam, and a 2500 crappy converter with 4.10's in an auto. Learn what works together before you get all disappointed with horrible numbers.

and whats with the "easy pull" remarks? Did you just half *** the dyno pulls or is that to make you feel better about your crappy numbers?

Ive been following you and some of your previous posts for the last few weeks now and you come across like you think your a genious in the LT1 world, it seems like you dont know what the hell your doing either. have fun with your slow car.
LMAO
Someone must need to get fucked!
Grumpy!!!
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Old Oct 4, 2011 | 12:00 PM
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My issue ended up being 3 things.
First the MAF was not working correctly
Second I had 2 exhaust leaks that needed to be addressed and were over looked
Third the tune needed to be tweaked once 1&2 we're taken care of.

Car is running much better now.
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Old Oct 4, 2011 | 12:12 PM
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New dyno #s?
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Old Oct 4, 2011 | 12:29 PM
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Get it to the track thats where you'll find out if your car isnt up to snuff where it should be.
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Old Oct 4, 2011 | 02:04 PM
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First, why would you tune a N/A motor to 11.** a/f anyways???? That's retarded. lol. Get the A/F into the 12.7-13.1 range and then adjust the timing accordingly.

and what is the "new" tweaked tune a/f and timing???
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Old Oct 4, 2011 | 04:26 PM
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With trying to fix the exhaust leaks I only got 2the pull today first pull was 367/371 second pull was 371/376 with the same tune as before. These were just log runs to make sure the MAF and exhaust issues were resolved. I hope to be tuning it more tomorrow and then next Monday. The exhaust leak was causing the o2 to add fuel across the entire rpm band. Now that we think we got everything worked out we will be upping the rev limited up and shift points accordingly. So maybe this set up will reach its goal and maybe not we will see next week.
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Old Oct 4, 2011 | 06:53 PM
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nice numbers ^^^
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Old Oct 4, 2011 | 08:01 PM
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Congrats on a quick fix. hopefully when i get my car back it goes as smooth...
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Old Oct 4, 2011 | 08:20 PM
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switch ur stall to at least 3600 and then redo dyno if you like the cam
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Old Oct 4, 2011 | 09:16 PM
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The stall will be changed out soon. I did not want to add to the issues by removing the tranny right now. Im already thinking of adding a set of kooks long tubes and a EWP.
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