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reccomendations 400rwhp!?

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Old Jul 14, 2005 | 11:30 AM
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Default reccomendations 400rwhp!?

hey everyone, LS1.com is down so im posting this here. I have a 98 Z28 M6 and i want to get it up to about 400 at the wheels. I was looking at a Borla cat-back, Hooker headers, Borla ORY, F.A.S.T intake, and the F.A.S.T 78mm TB, where would that put me? and how can i get myself up to 400 at the wheels? Thanks!
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Old Jul 14, 2005 | 11:30 AM
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oh by the way im completely stock except a whisper lid.
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Old Jul 14, 2005 | 11:41 AM
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Your list + Heads and a cam will get you there.

Nate
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Old Jul 14, 2005 | 11:51 AM
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im sure you could do it cam only, but it would have to be a larger cam
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Old Jul 14, 2005 | 11:53 AM
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Skip the FAST intake and throttle body - stick witht the LS6. Congrats! You just saved over $700! Use that for a cam package that includes the cam, dual valve springs, titanium retainers, and new pushrods. Thunder racing ahs them for jsut over $700. You could also try to do it with bolt ons, but I doubt you'd get there. Here's what you'd want (even a similar car!). Taken straight from Thunder's website.


This dyno graph is of a 1998 LS1 TransAM with Thunder Racing 224 Camshaft on a 112 LSA with stock cylinder heads. Other mods include FLP Long Tube headers, Whisper Lid, LS6 intake manifold, ported throttle body, ASP Pulley Aluminum Flywheel, and Carbon Fiber Driveshaft.
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Old Jul 14, 2005 | 11:56 AM
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well heads/cam is definately on the horizon, but thats after i get the 400 rwhp, i just want to get things i can do myself like on the weekend. the real goal is to be able to take on 03/04 cobras and the occasional corvette.
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Old Jul 14, 2005 | 12:09 PM
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Well, then it's all the bolts ons you can grab (btw, you can do a cam yourself - just have to pull the radiator - it's a pain, though).

I'd say LT headers, y-pipe, intake, ported TB, pulley, lid, aluminum flywheel, and put the car on a diet (stock seats weight 50lbs per - my Corbeau Forza's weigh 17lbs per).

I must say, though - it'll be hard to get 400 rwhp. You'll probably get 400hp at the crank (which will keep you up with Cobras and Vettes, since they're 400hp at the crank, not the wheels). My car dynoed 322rwhp with a lid and cutout. I've now got headers, intake, y-pipe (nothing rear of the y-pipe except bullet muffler), and I may be pushing 350rwhp. But, with a 13% driveline loss, that translates to just a hair over 400hp at the crank.
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Old Jul 14, 2005 | 01:19 PM
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Originally Posted by 00 Trans Ram
Skip the FAST intake and throttle body - stick witht the LS6. Congrats! You just saved over $700! Use that for a cam package that includes the cam, dual valve springs, titanium retainers, and new pushrods. Thunder racing ahs them for jsut over $700. You could also try to do it with bolt ons, but I doubt you'd get there. Here's what you'd want (even a similar car!). Taken straight from Thunder's website.

This dyno graph is of a 1998 LS1 TransAM with Thunder Racing 224 Camshaft on a 112 LSA with stock cylinder heads. Other mods include FLP Long Tube headers, Whisper Lid, LS6 intake manifold, ported throttle body, ASP Pulley Aluminum Flywheel, and Carbon Fiber Driveshaft.
I hope you know that the aluminum flywheel and cf driveshaft skew those numbers quite a bit. I wouldn't expect more than 385rwhp from a tr224 cam only. I don't even know why the make the FAST in 78mm. Get the ls6 intake and a f-14, also get some headers, ported throttle body, pulley and exhaust. You should be over 400rwhp. You won't do it with just bolt-ons.
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Old Jul 14, 2005 | 03:30 PM
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You wont hit that mark without heads and cam unless you want to go FI, or N2O.
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Old Jul 14, 2005 | 03:40 PM
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There are plenty of cam only cars over 400rwhp even without the aluminum flywheel and other "dyno mods" The F-14 from futral and bolt-ons has been proven to get you over the top.
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Old Jul 14, 2005 | 04:04 PM
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I wouldn't necessarily say that a carbon fiber drive shaft and aluminum flywheel are "dyno mods". The simply allow more of the HP that the engine makes to reach the ground.

They both save weight by cutting the rotational mass. It's the same as if you installed a lighter, stronger crank. It would allow more of the power to be used to turn the wheels, instead of turning the "stuff" that connects to the wheels.

Ultimately, there is only one thing to be gained by having a dyno verify that you are at 400rwhp - and that is bragging rights. But, if you want to go fast, beat some cars, and have a fun ride, you will want a powerful motor WITH a lighter car.
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Old Jul 14, 2005 | 04:21 PM
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Originally Posted by UnZFeat'd
well heads/cam is definately on the horizon, but thats after i get the 400 rwhp, i just want to get things i can do myself like on the weekend. the real goal is to be able to take on 03/04 cobras and the occasional corvette.
thats where our little friend n2o comes in
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Old Jul 14, 2005 | 05:56 PM
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Originally Posted by SporkLover
You wont hit that mark [400 rwhp] without heads and cam unless you want to go FI, or N2O.
*I see what you meant. He said he was saving h/c for after making 400 rwhp. You are totally correct, you can't make 400 rwhp NA without a cam.

Last edited by blkZ28spt; Jul 14, 2005 at 10:41 PM.
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Old Jul 14, 2005 | 10:01 PM
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Originally Posted by blkZ28spt


Sorry, but that is DEFINATELY


That is MAJOR bullshit. People make 400 rwhp cam only ALL the time. Hell, I have 385 rwhp cam only (NA, stock bottom end, stock heads) through an unlocked 4000 stall converter with an LS6 intake (not the fast lsx).



400 rwhp requires all the bolt-ons and a moderate-large cam. Some get lucky and make it with smallish cams like a 224. Heads/cam on an M6 with all the supporting bolt ons, fast intake, etc can make 430-450+ rwhp.

i think u misunderstood what he said
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Old Jul 14, 2005 | 10:38 PM
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Originally Posted by JustAnIlluzion
i think u misunderstood what he said
You're right, I did. He said without heads and cam. BIG key word there.
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