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What to build it up with?

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Old 05-01-2007, 08:20 AM
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Default What to build it up with?

Ok, so i have a 99 Z28, i have had it almost a year now, i have done lots of mods towards the looks of the car, but i want some more power, i have pacesetter off road long tube headers and y pipe, slp loudmouth 2, volant cold air intake, what now?
Old 05-01-2007, 11:17 AM
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How much are you wanting to spend?

I would do LS6 Intake, then I would go into the suspension. LCA's, panhard bar, torque arm, subgrame connectors, etc...

If you've got a good amount of money you are only left with a choice really. Heads, cam, nitrous, forced induction, or a combination thereof.
Old 05-01-2007, 11:30 AM
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I have the Volant intake on it right now, and i have the SLP intake back home. I am getting lowering springs, had NOS, Want to be all motor
Old 05-01-2007, 12:42 PM
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I was referring to the intake manifold itself. Not the intake w/filter. It's the intake that came on 01-02 f-body's and the z06 corvette. There's way more to suspension than just lowering springs. I'd focus on some of the other suspension components I had mentioned. Get subframe connectors at the very least.

After that I would go with a cam, springs, retainers, pushrods.

Ls6 intake

Old 05-01-2007, 01:15 PM
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How much of a hp gain is the ls6 intake?
Old 05-01-2007, 07:46 PM
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you will get 10-15 hp with the ls6 intake
Old 05-01-2007, 08:30 PM
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Yeah, But if you are going to do an Intake go Fast and NW TB 90/90 setup. Then heads and cam. Depends on money go with elec water pump too. Dont forget pullies. Every little bit helps.
Old 05-01-2007, 10:06 PM
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Originally Posted by Beasst8
Yeah, But if you are going to do an Intake go Fast and NW TB 90/90 setup. Then heads and cam. Depends on money go with elec water pump too. Dont forget pullies. Every little bit helps.
How much you think that will put me at around?
Old 05-01-2007, 11:15 PM
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or you could buy a fast 78mm manifold for 550 shipped
Old 05-02-2007, 07:28 AM
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Originally Posted by LS1IMPULSE
or you could buy a fast 78mm manifold for 550 shipped
lol whats that going to do for me?
Old 05-02-2007, 07:49 AM
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If you do buy a fast buy the 90/90 only. The other one has shown little if any gains over the LS6.

You are looking at ~$500 for a LS6/ported TB (NEW, used you can find them for about $300) and $1200 for the FAST 90/90 (used they are still expensive), so you can decide on what you want.

For the money you could get LS6 intake manifold/ported TB and a cam (plus accessories) for the price of a FAST 90/90 And you will have around 400rwhp depending on cam. The fast 90/90 won't get you anywhere near that.
Old 05-02-2007, 07:52 AM
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What is a FAST 90/90?
Old 05-02-2007, 07:58 AM
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Here is what I recommend. All the prices are new and do not include labor. (prices are from speedinc aka www.ls1speed.com) You can shop around for better deals if you can find them.

LS6 Intake Manifold - $470 - 15rwhp
Ported TB (neweraperformance)- $75 - 5rwhp (mainly for throttle response)
Comp Cam - $370 - 10-75rwhp (widely varies on size of cam and your combination)
Comp Chromoly Pushrods - $115
Patriot Dual Spring Kit - $250

You may need or should get a few other parts for safety, like ported oil pump, new o-rings, new gaskets for manifold and valve covers and water pump. However, a lot of people's gaskets are still in good shape and do not need to be replaced.

Those parts accompanied by your current parts will net you anywhere from 380-420rwhp.
Old 05-02-2007, 07:59 AM
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Originally Posted by HIPER-Z
What is a FAST 90/90?
FAST is the brand of intake manifold. It's opening is 90mm and the TB is 90mm thus the Fast 90/90.

Old 05-02-2007, 08:11 AM
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Originally Posted by 777
Here is what I recommend. All the prices are new and do not include labor. (prices are from speedinc aka www.ls1speed.com) You can shop around for better deals if you can find them.

LS6 Intake Manifold - $470 - 15rwhp
Ported TB (neweraperformance)- $75 - 5rwhp (mainly for throttle response)
Comp Cam - $370 - 10-75rwhp (widely varies on size of cam and your combination)
Comp Chromoly Pushrods - $115
Patriot Dual Spring Kit - $250

You may need or should get a few other parts for safety, like ported oil pump, new o-rings, new gaskets for manifold and valve covers and water pump. However, a lot of people's gaskets are still in good shape and do not need to be replaced.

Those parts accompanied by your current parts will net you anywhere from 380-420rwhp.
Is this adding on top of what i have already?
Old 05-02-2007, 10:22 AM
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I think the 90/90 is overkill for 346 - so the LS6/FAST 78 would be a better choice, if you buying a new LS6 for 470 just get a used FAST 78 instead not huge gains over the LS^ but in higher RPM's you will see some plus it wont be much more than a new LS6.

777's list looks pretty good...
-Cam (I like Futral's cam's but Thunder Racing also has great choices)
-Valvetrain parts (Patriot Dual Kit - Pushrods)
-You have a 99' so I would pick up and LS6 oil pump (ported if you want)
-For safetly I would get at least and LS2 Timing chain, or a double roller
-Ported TB/Intake Manifold

With all those parts your looking at about 1400 give or take a few bucks depending what you decide to go with for the last 3. On top of this putting all those mods on your car you will probably NEED to get a tune so add about $500 for a good dyno tune. Also depending on your cam choice you may need to re-gear if you go too large, and a new clutch will probably be in order after not too long. so add another 500-1500 depending on what clutch you choose.
Old 05-02-2007, 10:33 AM
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And while youre at it, throw a new rear end on that list
Old 05-02-2007, 11:07 AM
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How is the 90/90 overkill? I have a new clutch, getting 4.10's. Dunno what else.
Old 05-02-2007, 11:28 AM
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Because you still have a 346. Its still a good mod but its not worth the money for stock cubes.
Old 05-02-2007, 11:43 AM
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So how much difference in power will it be going down to the 78?



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