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Horsepower TV E-Rod LS3

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Old May 2, 2010 | 09:27 AM
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Default Horsepower TV E-Rod LS3
Anyone catch this episode? A crate LS3 registered 495hp on an engine dyno

How can that be possible when it's rated at 430?
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Old May 2, 2010 | 09:32 AM
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yeah I saw it, even had it running cats, pretty big number...........
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Old May 2, 2010 | 09:38 AM
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Hot cam crate LS3? I think GM makes one...
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Old May 2, 2010 | 09:46 AM
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saw that show makes u wonder
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Old May 2, 2010 | 09:51 AM
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yea i watched that episode also. pretty nice numbers.
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Old May 2, 2010 | 10:44 AM
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i'm watchin it right now, way to spoil the damn results!!! They just hoooked it up to the dyno lols. Sounds like a stout motor haha.
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Old May 2, 2010 | 10:47 AM
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Originally Posted by 00T/AWS6
i'm watchin it right now, way to spoil the damn results!!! They just hoooked it up to the dyno lols. Sounds like a stout motor haha.
hah im watching it also
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Old May 2, 2010 | 10:54 AM
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I thought it was kind of weird that they added a cam and 1.85 rockers. That flies in the face of all the conventional wisdom on this site. They even used beehive springs. I didn't catch any cam or spring specs though.

Larry
Last edited by VIPRETR2; May 3, 2010 at 03:35 PM.
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Old May 2, 2010 | 11:17 AM
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that was on other ls builds they did, the ls3 was stock exept for it had a ewp on it when they dynoed it. awsome results, i wish i had one for my car.
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Old May 2, 2010 | 11:31 AM
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its a different correction factor. gm is conservative, on the other end of the scale is magazine numbers.
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Old May 2, 2010 | 01:12 PM
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what were all the results? I missed the show.
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Old May 2, 2010 | 01:17 PM
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hah, comes on in about 12 mins here in l.a, calif. i have the tivo already started.
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Old May 3, 2010 | 12:58 AM
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Originally Posted by LCBE
its a different correction factor. gm is conservative, on the other end of the scale is magazine numbers.
the LS3 is sae certified. looks like their dyno is a lil optimistic!
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Old May 3, 2010 | 04:44 AM
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Originally Posted by VIPRETR2
I thought it was kind of weird that they added a cam and 1.85 rockers. That flies in the face if all the conventional wisdom on this site. They even used beehive springs. I didn't catch any cam or spring specs though.

Larry
I believe it was just the GM hotcam, they never gave exact specs but said thats what they put in it.
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Old May 3, 2010 | 07:09 AM
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There was no Hot Cam or different rockers in that motor, not sure where that came from. That E-Rod is a bone stock LS3 thats either underrated or the pcm that comes with it has a pretty good tune or both.
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Old May 3, 2010 | 07:58 AM
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Originally Posted by reds10406
There was no Hot Cam or different rockers in that motor, not sure where that came from. That E-Rod is a bone stock LS3 thats either underrated or the pcm that comes with it has a pretty good tune or both.
did the engine have LT headers or were they using stock manifolds? LS3 vettes and camaros with full exhaust, an intake, and a tune are making ~420 whp. the engine hot rod was dynoing probably had no accessories to drive so less parasitic loss there. a lot of the engine dyno mag tests running cammed 6.0/6.2L engines with stock LS3/L92 heads seem to be getting around 550 hp. another 55-60 hp is reasonable for a cam swap.
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Old May 3, 2010 | 08:05 AM
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Originally Posted by zigroid
did the engine have LT headers or were they using stock manifolds? LS3 vettes and camaros with full exhaust, an intake, and a tune are making ~420 whp. the engine hot rod was dynoing probably had no accessories to drive so less parasitic loss there. a lot of the engine dyno mag tests running cammed 6.0/6.2L engines with stock LS3/L92 heads seem to be getting around 550 hp. another 55-60 hp is reasonable for a cam swap.
They were running stock camaro manifolds with cats. They were also running an electric water pump and an open element air filter.
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Old May 3, 2010 | 08:57 AM
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Originally Posted by reds10406
There was no Hot Cam or different rockers in that motor, not sure where that came from. That E-Rod is a bone stock LS3 thats either underrated or the pcm that comes with it has a pretty good tune or both.
Sorry I just rewatched the episode on tivo and while the motor was on the engine dyno warming up they did a flashback of past LSX builds and the one part was them putting a hot cam in one of the builds. Sorry for the mix up.
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Old May 3, 2010 | 09:41 AM
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I want a LS3. Bad.
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Old May 3, 2010 | 09:51 AM
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Originally Posted by MikeG
I want a LS3. Bad.
me too!!!! Just add a cam and you could have one hell of a motor!!!!
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