Generation III Internal Engine 1997-2006 LS1 | LS6
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Trex cam = 377hp

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Old Dec 14, 2006 | 08:16 PM
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Default Trex cam = 377hp

Dynoed a car today that had a 364ci 6.0L stock bottom end with a Trex cam and Patriot LS6 style stage 2 heads and a LS6 intake. It only made 377hp and 359ftlb with 28* total timing.

Is this the lowest Hp from a TRex ever?
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Old Dec 14, 2006 | 08:31 PM
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Wow thats crazy. The 224 and ls6 heads make more than that. Something is definately wrong with that car.
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Old Dec 14, 2006 | 08:45 PM
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something is wrong with your car or the place that did your dyno. with my set up I am pushing 470rwhp. when I was using a 224/224 575/575 114 cam I dyno'd at 382rwhp. no way in hell are you at only 377
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Old Dec 14, 2006 | 08:47 PM
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could it be that that dyno is very stingy? couldnt tell from the orig. post if your then dyno operater, hence lots of exp. with that dyno, or a friend of someone with that setup? what about the a.f.ratio? bad air filter? clogged cats? improper preload on lifters and valves not opening all the way? throttle blade not opening all teh way? more details. doesnt quite seem right.
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Old Dec 14, 2006 | 09:06 PM
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If it was an auto convertor may not have been locked ,m6 hum don't know!
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Old Dec 14, 2006 | 09:11 PM
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Originally Posted by import slayer
something is wrong with your car or the place that did your dyno. with my set up I am pushing 470rwhp. when I was using a 224/224 575/575 114 cam I dyno'd at 382rwhp. no way in hell are you at only 377
the converter could be unlocked on mustang dyno and it be 120* celcius outside & that combo shouldnt dyno that low.
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Old Dec 14, 2006 | 09:12 PM
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Add a few degree's of timing and lean it out a bit
Numbers sound WAYYY off
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Old Dec 14, 2006 | 09:14 PM
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Lots of info missing.

No mention of headers...? Air/fuel ratio? Transmission? Dyno type? Cam degreed/installed wrong?
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Old Dec 14, 2006 | 09:17 PM
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It's my car, and was on a very good tuners dyno. We dynoed a Dart 225, F13 package right ahead of mine and it made 404. And that's through full catted exhaust.

My car has a ORY so plugged cats isn't the problem, the filter is clean, valves are good, and we checked the throttle blade. The AFR was in the 13's and the timing was at 28*. No knock retard eighter.

It made really nice and smooth dyno graphs and the car seemed to be pulling harder that it really was.

With the same heads a 232/236 .549/549 110 cam and the stock ls1 it made 400/410 with the stock LS1 intake also.
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Old Dec 14, 2006 | 09:18 PM
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O yeah it has a TH350 trans with a PTC nitrous converter.
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Old Dec 14, 2006 | 09:21 PM
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Well thats probably youre prob then, a auto and if it wasn't locked that sound about right then if it was a stingy dyno!
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Old Dec 14, 2006 | 09:27 PM
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take it to the track!
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Old Dec 14, 2006 | 09:29 PM
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The trans. isn't the problem, I've had it on dyno's with the th350 before and it did fine. And most of the time the diff. in a locked converter and an unlocked converter is normally around 10-20 hp so that would still only put it at 397 which would still be way off imo.
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Old Dec 14, 2006 | 09:30 PM
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Originally Posted by got milk??
take it to the track!
Probably will just to see, but I really don't think it's going to be anything like it was with the stock engine. Torque was only around 360.
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Old Dec 14, 2006 | 09:44 PM
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i say put the other cam back in and see what happens
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Old Dec 14, 2006 | 10:30 PM
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Numbers look low to me.
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Old Dec 14, 2006 | 10:36 PM
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somethings not adding up...
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Old Dec 14, 2006 | 11:14 PM
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Originally Posted by willyfastz
Dynoed a car today that had a 364ci 6.0L stock bottom end with a Trex cam and Patriot LS6 style stage 2 heads and a LS6 intake. It only made 377hp and 359ftlb with 28* total timing.

Is this the lowest Hp from a TRex ever?

Explain the first line please?? a 346 6.0l???? Well i have seen this before and the infact the trans was slipping. Fixed the trans and was back up at 480s. Also what pushrods are you using>>
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Old Dec 15, 2006 | 12:04 AM
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Mabye that combination sucks.(emphasis on the heads) We dynoed a friends car at Mike Norris' dyno earlier this week with that exact same setup (346 CI 6 speed with 4.10 rear 10 bolt) and got 390 RW through the exhaust, and 407 with open headers. Tuned!

I am going to switch on a set of stock LS6 heads and see what the difference is. I bet it picks up.
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Old Dec 15, 2006 | 12:07 AM
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I didnt know you could put a ls6 intake into a 6.0???
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