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

Just dyno'd

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Old 07-19-2008, 03:24 PM
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Default Just dyno'd

I'm pretty dissapointed. Car started acting up on the way home too


Old 07-19-2008, 03:36 PM
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Damn...Nice #'s..If ya dont mind, any details to your setup? How many lbs of boost,etc?
Old 07-19-2008, 03:43 PM
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IMO they are pathetic for my setup. Its a forged 355 8.75:1, Procharger f1a@13 psi. EPP front mount, Procharger race bypass, 9 inch rear, mcleod street twin clutch, full bmr suspension. Thats about all worth mentioning lol oh and a mail order tune.
Im gonna have to go over some stuff on her, something just doesn't feel right since I left
Old 07-19-2008, 03:52 PM
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Yeah, something's up!
Old 07-19-2008, 04:35 PM
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Ah, I didn't know you had an F1 on there..Yea, that does seem a little low for that much boost..Who did the mail order? Maybe that needs adjusted?
Old 07-19-2008, 06:07 PM
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Originally Posted by flyinZ
Who did the mail order? Maybe that needs adjusted?
Im with him...
Old 07-19-2008, 06:17 PM
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Stock intake, heads, and cam? The #'s are still a tad low but most people will prolly think it has a cam and stuff too, ya know.
Old 07-19-2008, 06:39 PM
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SOMETHING IS WAY WRONG, should be making big numbers with that setup.
Whats the specs on the heads, intake, and cam, any more details as well?
What are you doing for the inlet of the blower??
I have a D1SC through a 9inch and a 4L80E hoping to make 650-700rwhp.
Old 07-19-2008, 06:53 PM
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Pcmforless did the tune, haven't logged timing, knock or intake temps even. Intake is ported lt4 along with the heads, I'll have to look up flow numbers. Cam is 216/222 .560 114lsa.
For the inlet, i'm using Procharger's new design, the hard plastic mold.
Old 07-19-2008, 07:29 PM
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Something is wrong b/c that car should do 750RWHP, what pulley setup you on running on it?? your boost level and pulley combination will show us how efficient your motor is and how hard the blower is working.

Any meth on the car?? I am willing to guess the mail order tune is the problem, someone can only be so good with that especially with a combo like that. Next time pull the filter setup off and see what it does.
Old 07-20-2008, 12:34 AM
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7.65 crank and 4.25 blower pullies. No meth. I have a smaller pulley and looking into meth injection now as well as a real tune.
Old 07-20-2008, 03:47 PM
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If it doesnt feel right it may have hurt something running the mail order tune.
Old 07-20-2008, 04:32 PM
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The tune is very much on the safe side, just not the best for making power apparently haha
Bit of good news, I have been hearing bad things about that particular dyno and that it has been giving some screwy numbers. There was a bolt on ls1 with a blower getting tuned there the other day and made 351rwhp after the tune! Something is up.
Old 07-20-2008, 10:59 PM
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try another dyno, if that doesnt fix it id have to say get it dyno tuned.
Old 07-21-2008, 08:19 AM
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Get it tuned either way. you are WAY out of mail order tuning range IMHO I can only think of one or two I would even attempt a mail tune with and that would just be to start
Old 07-21-2008, 04:55 PM
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Yes, I know I need a tune lol The car has only been running for a few weeks and I got a mail order tune just to get it close. A tune is in the works.
Old 07-21-2008, 06:40 PM
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I would not be dissapointed, your lucky that thing did not blow up with a mail order tune. I don't think that is a reliable way to tune a car like yours at all. Maybe a bolt-on cam car could get by with a mail order but that would be about it. You get a good tune on that car it will pick up 50-75whp easy.
Old 07-22-2008, 11:48 AM
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Update: The connections on my aftermarket fans had worked loose and were barely touching, explaining the wacky temp gauge. I also changed the o2 sensors. Took it out last night and its a night and day difference! I'll be runnin at the track on friday so well see how it does.
Old 07-22-2008, 12:28 PM
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Good to hear, you should pull 1 plug just to look at too.
Old 07-22-2008, 02:28 PM
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Maybe i'll pull some tonight and post a pic. I don't really know how to read plugs lol


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