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[Z06] Making 400RWHP

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Old Jun 10, 2005 | 01:41 AM
  #1  
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Default Making 400RWHP

I have been watching and reviewing several threads on making horsepower but most mods seem to be for the LS1 set up.

I have a 04 Z06 CE.
I would expect the starting RWHP to be around 350-365
What are some of the options to move that HP to just over the 400 mark?
I do not want to get into any internals.
I have a wife (on a mod budget).
And do want want a loud exaust.

I am starting my HP mods with a hood seal
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Old Jun 10, 2005 | 05:37 AM
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headers, intake, catback, mid-pipe, pullies, and tune are about all of the bolt-ons you can do. Headers and opening up the exhaust will help alot, but your car will sound like a race car. Pullies have to be good for a few extra ponies, say 5-15rwhp. An intake should be good for about 5-15rwhp also. So say 350 plus you mods. 350+15+15+all you exhaust. Lets say 20-40rwhp on exhaust(im just guessing on basic car knowledge i dont own a vette yet) and you shold be over the 400hp mark, but not far from it.The real HP grabber in these is a nice H/C setup. All the mods i said and i nice H/C should put you at around 430-450rwhp. At least to my little vette knowledge.
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Old Jun 10, 2005 | 08:18 AM
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that 400rwhp number is a bit elusive...with external mods and tune can get to 385-395rwhp area...but to get 400rwhp or above pretty much have to add a cam...a ZO6 with 390rwhp runs very nice and remains very dependable.
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Old Jun 10, 2005 | 08:57 AM
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You could step your rocker arm ratio up, this would give you a bit more lift on your cam

I would suggest these things

-Long Tubes
-High flow/no cats
-The stock cat back flows fine so if you are on a budget no need to replace it
-Rockers
-Air intake (Donaldson, Vararam etc...)
-Pulleys
-Dyno Tuning
These items should get you very close to 400 rwhp with stock reliability and driveability.... these are the exact same mods I have planned for my car....good luck

Mike
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Old Jun 10, 2005 | 11:52 AM
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with lg headers, no cats, stingers, blackwing, and a tune i was at 402-405rwhp (verified on 2 dynos). however, it was by no means quiet. with headers and exhaust your noise will increase substantially. i think the only way to have more power with the least noise is a supercharger with the rest of the exhaust and headers being stock. however, this route is not cheap.

you can check out my website (link in sig) for some sound clips of me on the dyno with a ati supercharger, headers, and straight pipes
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Old Jun 10, 2005 | 12:55 PM
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That hood seal is worth at least 5 HP so your on your way.....

You'll need all the usual bols-on's, intake, LT headers, high flow cats, X-pipe and a cat-back exhaust, maybe new plugs and wires and finally LS1 Edit. That will get you real close to the 400 RWHP mark. But most likely around 390 to 395. Very few have gotten to 400 RWHP with just bolt on's and a tight budget.

Good luck

Tom
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Old Jun 10, 2005 | 02:00 PM
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I noticed that some of you mentioned catback, but I was under the impression that stock Ti flows very well and that catback isn't much of improvement over stock Ti. Am I wrong about this assumption?
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Old Jun 10, 2005 | 02:13 PM
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Originally Posted by StingerZ16
I have been watching and reviewing several threads on making horsepower but most mods seem to be for the LS1 set up.

I have a 04 Z06 CE.
I would expect the starting RWHP to be around 350-365
What are some of the options to move that HP to just over the 400 mark?
I do not want to get into any internals.
I have a wife (on a mod budget).
And do want want a loud exaust.

I am starting my HP mods with a hood seal
On Andy's "conservative" dyno I got 399.8 rwhp and I have the garbage TPIS headers. Mods below. Car is very loud which is probably something most couldn't deal with. Andy says on another dyno it would have been about 403-405 rwhp.

TPIS HEADERS
NO CATS
STRAIGHT PIPE
TRAP INTAKE
U/D PULLEY
MEZIERE WATER PUMP
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Old Jun 10, 2005 | 03:38 PM
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Originally Posted by AOC
I noticed that some of you mentioned catback, but I was under the impression that stock Ti flows very well and that catback isn't much of improvement over stock Ti. Am I wrong about this assumption?
From what I have read here on the forum, posted by other members, that the factory Z06 Ti cat back exhaust does flow very well. Reasons why people replace it are mainly to get a more aggressive sound. Increase in HP with these systems is minimal, if anything...unless you go with the cat back setups that have no mufflers or next to no mufflers or you go with the more expensive Ti aftermarket cat back setups. For me, I am looking at adding long tube headers and high flow cats down the road. That with a dyno tune should yield another 30 rwhp minimum.
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Old Jun 10, 2005 | 04:24 PM
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My '03 is sitting at 380 with a Haltech and a tune. The long tubes are my next mod and I hope to be right at 400. From everything I've read and talked to folks about it'll take a cam or at lease high lift rockers to make it over 400.

Good luck!
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Old Jun 10, 2005 | 05:15 PM
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Originally Posted by AOC
I noticed that some of you mentioned catback, but I was under the impression that stock Ti flows very well and that catback isn't much of improvement over stock Ti. Am I wrong about this assumption?
The short answer is yes the OEM Ti's flow very well and you'll gain very little with a cat-back. And under normal circumstances I'd say keep 'em. But if your goal is 400 RWHP with just "bolt on's" your going to need every trick in the book. So if a cat-back is only good for say 5HP that could be what keeps you from the magical 400 mark. You can't feel the difference between 395 and 400 anyway. But sometimes it's about bragging rights.

Tom
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Old Jun 10, 2005 | 05:35 PM
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Originally Posted by AOC
I noticed that some of you mentioned catback, but I was under the impression that stock Ti flows very well and that catback isn't much of improvement over stock Ti. Am I wrong about this assumption?
I have the complete Z06 exhaust (headers, H-pipe, and Ti catbacks) on my 2000 FRC and had it tuned at Andy's just this week. It sounds really mean at WOT, and pulled 330 RWHP with a stock LS1, so I would think the the stock Z06 system flows very well.
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Old Jun 10, 2005 | 05:50 PM
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Originally Posted by C5 CU
that 400rwhp number is a bit elusive...with external mods and tune can get to 385-395rwhp area...but to get 400rwhp or above pretty much have to add a cam...a ZO6 with 390rwhp runs very nice and remains very dependable.
I got 383 rwhp, with all the external mods I could do

Same car as you
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Old Jun 10, 2005 | 05:53 PM
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Originally Posted by AOC
I noticed that some of you mentioned catback, but I was under the impression that stock Ti flows very well and that catback isn't much of improvement over stock Ti. Am I wrong about this assumption?
Two things

1. you are right, I added B&B Bullets, added 3 rwhp as measured on the same dyno.

2. With just the headers and x-pipe, prior to the Bullets, It was actually quieter, it had a little different sound but was not louder. Point being headers and an x-pipe wouldn't make it too loud.

I like loud and love the 4 inch tips
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Old Jun 10, 2005 | 05:53 PM
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Tom..Yeah, I understand what you are saying and I agree with you that if one is looking to get to certain rwhp, every little pony helps.

Minkster...Very nice gain.

I'm installing TPIS LT headers next week and going to leave everything else stock (exhaust wise) and see what gains I get.
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Old Jun 10, 2005 | 06:46 PM
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Find your self the best dyno tuner you can. After you put all the modes get the dyno tune.

I run about 400 rwhp and 425 rwtq

MODS:
TPIS ceramic heades
Random Tech High flow cats and x-pipe
GHL Bullet Exhaust
Cyclone air induction with K&N ( bottom breather like Vortex )
90 mm ported and poslished tb
MSD ignition, distibutor and wires.
NGK irridain plugs

GM T1 trans cooler
GM T1 oil cooler and 3 qt Moroso accu-sump

and a darn great dyno tune.
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Old Jun 10, 2005 | 07:06 PM
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Originally Posted by AU N EGL
Find your self the best dyno tuner you can. After you put all the modes get the dyno tune.

I run about 400 rwhp and 425 rwtq

MODS:
TPIS ceramic heades
Random Tech High flow cats and x-pipe
GHL Bullet Exhaust
Cyclone air induction with K&N ( bottom breather like Vortex )
90 mm ported and poslished tb
MSD ignition, distibutor and wires.
NGK irridain plugs

GM T1 trans cooler
GM T1 oil cooler and 3 qt Moroso accu-sump

and a darn great dyno tune.
Are you sure about that torque? Guys with the g5x3 are only getting 405 rwtq. Did you leave some mods out?
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To Making 400RWHP

Old Jun 10, 2005 | 07:06 PM
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Originally Posted by StingerZ16
I have been watching and reviewing several threads on making horsepower but most mods seem to be for the LS1 set up.

I have a 04 Z06 CE.
I would expect the starting RWHP to be around 350-365
What are some of the options to move that HP to just over the 400 mark?
I do not want to get into any internals.
I have a wife (on a mod budget).
And do want want a loud exaust.

I am starting my HP mods with a hood seal
i would say a 50 shot of nitrous would get what you need.
a one mod solution and prob the cheapest route to go.

what i would prefer to get to 400rwhp which does involve a little internal work...

kooks LT headers with cat-back - sounds marginally louder than stock , blackwing intake, and a 224/224 114 cam (TR or TTP) tuned and that will do it while keeping the ride on the conservative side and probably can be done in within 3K range for it all tuned (save $$$ by installing intake and headers yourself).

spend any more and I would recommend supercharging.

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Old Jun 10, 2005 | 07:55 PM
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I don't think you will be able to get to that mark with bolt ons. I want to be 400-410 to the wheels and I have headers and vortex intake. I will need a medium sized cam and pulley to get to my goal according to a great tuner.
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Old Jun 10, 2005 | 10:42 PM
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'02Z06 base dyno stock 350rwhp

added LT headers/exhaust/intake/t body/ LS edit

same dyno-399rwhp
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