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Dyno'd LT4 Bone Stock Only Please

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Old May 19, 2006 | 10:17 AM
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Default Dyno'd LT4 Bone Stock Only Please

We have a dyno day coming up in a week which we have three bone stock-no mods LT4s for testing. If you have an LT4 and it was dyno'd, could you please post what your results were. I know there's alot of disparity with this engine in the amount of RWHP and Torque. I would like to establish a baseline percentage before and after with MODS that alot of us use or would be interested in getting. Hopefully this thread will provide a good deal of info for those who would like to know certain MODS and the size of thier pocketbook and what to expect. Thank You in advance who contribute.
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Old May 19, 2006 | 10:28 AM
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I dont know my torque but mine with corsa exhaust dynoed 290 rwhp...which is low for a LT4 with exhaust. Of course I had an exhaust leak which didnt help and the car desperately needed a tune-up. Anyways...that equals out to about 330 hp. Im thinking with 3 LT4's you will see between 290-310 rwhp. Sorry I know its not bone stock...but that just gives you an idea of what you will see.
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Old May 19, 2006 | 10:36 AM
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Originally Posted by LT4-FUN
We have a dyno day coming up in a week which we have three bone stock-no mods LT4s for testing. If you have an LT4 and it was dyno'd, could you please post what your results were. I know there's alot of disparity with this engine in the amount of RWHP and Torque. I would like to establish a baseline percentage before and after with MODS that alot of us use or would be interested in getting. Hopefully this thread will provide a good deal of info for those who would like to know certain MODS and the size of thier pocketbook and what to expect. Thank You in advance who contribute.
Hmmm...I have a feeling I live close to you. Wanna dyno four stock LT4's? Assuming I don't have to work of course. I have a bad o2 sensor and an open airbox lid but the stock lid is around here somewhere.
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Old May 19, 2006 | 10:58 AM
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Originally Posted by CP5150
Hmmm...I have a feeling I live close to you. Wanna dyno four stock LT4's? Assuming I don't have to work of course. I have a bad o2 sensor and an open airbox lid but the stock lid is around here somewhere.
Thanks CP5150, Sorry, but we are limited to 10 cars on that day. I would love to have you join us. If anyone drops out, I will let you know.
BTW it will be on the 27th which is Saturday.
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Old May 19, 2006 | 12:14 PM
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Can't remember the torque numbers, but my stock LT4 dyno'd at 311rwhp on one dyno and at 307 after an LT1edit on a second dyno several months later. Go figure.

HTH.

Larry
code5coupe
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Old May 19, 2006 | 12:30 PM
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Mine with only a Corsa cat-back did 295rwhp / 310rwtq.
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Old May 19, 2006 | 12:56 PM
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Mine dyno 292rwhp on a dynojet. BONE STOCK.
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Old May 19, 2006 | 12:58 PM
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here:
http://www.grandsportregistry.com/dyno.htm

there are a few stock LT4s on that list but you will notice more stock w/ a few bolt ons in the LOW 300rwhp range. 290s to 305rwhp is normal for a STOCK LT4.
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Old May 19, 2006 | 04:01 PM
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Originally Posted by Bluewasp
here:
http://www.grandsportregistry.com/dyno.htm

there are a few stock LT4s on that list but you will notice more stock w/ a few bolt ons in the LOW 300rwhp range. 290s to 305rwhp is normal for a STOCK LT4.
Yeah, thats what I'm getting after. It seems to be a safe bet, so far anyways that the avg. RWHP= about 292-305 and torque=301-315. I don't expect a huge difference in comparison's, but to get as many LT4s as I can will give a better base for what this engine really is. It was so underated when the c-5s came out.
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