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Next mod for 400hp?

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Old 04-18-2006, 10:36 PM
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Default Next mod for 400hp?

Ya, I know, I hate these threads too, but I think for once I'm kind of stuck as to what to do next.

I have an 00 M6 car, I have done an air lid, ls6 intake, long tubes/ORY, catback, tune, a TR 230/224 .575/.563 111 LSA cam, and 42# injectors as of yesterday because I was maxxing out the stock ones.

It made 390hp/377tq.

I don't want to get heads just yet because I don't know what I want (and want to save up for a good set).

What's next as far as bolt-ons for under $1k? Is it time for a fast intake yet?

Old 04-18-2006, 10:39 PM
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You could go with a ported throttle body that would probably get you there. Or change the y-pipe and go with trueduals dumped. Or you could do both
Old 04-18-2006, 10:46 PM
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How are you out of injector? I have the same year car, power level in sig and my stockers are fine still. Just trying to understand.

Other than that an underdrive would yeild around 10whp.
Old 04-19-2006, 12:24 AM
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under drive pulley and ported/polished TB... for bolt-ons
Old 04-19-2006, 02:34 AM
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78mm fast intake will get you there for sure with matching t-body
Old 04-19-2006, 03:26 AM
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U/D pulley & port and polish your stock TB would be enough just my .02

peace
Old 04-19-2006, 03:31 AM
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Originally Posted by bad95killer
U/D pulley & port and polish your stock TB would be enough just my .02

peace
Old 04-19-2006, 07:45 AM
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Originally Posted by 954RR
How are you out of injector? I have the same year car, power level in sig and my stockers are fine still. Just trying to understand.

Other than that an underdrive would yeild around 10whp.
I don't know, I didn't think I'd be replacing injectors so soon either! They showed a 114% duty cycle on the dyno. I upgraded to 42#'s and now it's only 50%. I occasionally use a 75 dry shot so I have a little room to grow on those injectors.
Old 04-19-2006, 07:49 AM
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i agree go with a ported TB and a ASP crank pulley

i would NOT do a FAST 78 intake as you really wont see results over a ls6

or just throw a 100hp shot of NOS on it and call it a day


but ya should save for heads and i mean good ones like Edelbrocks or AFRs its the best mod ya can do especially for a daily driver it would put ya around 430+ rwhp which is awesome for a daily driver
Old 04-19-2006, 08:01 AM
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i'd go with a pulley and ported TB as well...i was gonna say a nitrous kit, but sounds like you already have that...but those seem to be the best for your goal of 400, reasonably cheap too, still under your 1k limit..

Jon
Old 04-19-2006, 08:52 AM
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Originally Posted by thechef
i agree go with a ported TB and a ASP crank pulley

i would NOT do a FAST 78 intake as you really wont see results over a ls6

or just throw a 100hp shot of NOS on it and call it a day
At what point do you add that intake then, when you get heads?

I have a dry kit already but I don't use it that often. I was looking for 400 n/a. I'll look into the crank pulley and TB.
Old 04-19-2006, 10:37 AM
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yeah. I have the 90/90 and having them port matched to the heads is the way to go if you can swing it. I looked at it like i need both so i bought the 90/90 and when i get back from PT im having heads port matched. Big gains withouth losing driveability. I ahve a simliar cam as you. Im expecting 440 +NA and a 90mm n20 plate setup(100 shot) to 550 ish with the same drivability as i have now.
Old 04-19-2006, 10:40 AM
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I'll be selling my Jantzer chrome stage 3 TB is you decide you want to go that route.
Old 04-19-2006, 10:42 AM
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Def do the pulley and throttle body port. I wouldn't spend the money on the FAST 90/90 until you can afford the heads. IMO I would do heads before the FAST. I need to get a pulley myself.
Old 04-19-2006, 12:04 PM
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You know you would most likely be over 400 if you didnt have the 12-bolt right? I wouldnt waste any money for 10HP on a piece of paper. Put the $1k away and towards a set of heads.
Old 04-19-2006, 01:10 PM
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since you have a cam, a cutout might get you there also if that catback is creating a restriction. I'd also do the pulley and TB, you'll be over 400 NA for sure.
Old 04-19-2006, 01:33 PM
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Originally Posted by MadSeason
since you have a cam, a cutout might get you there also if that catback is creating a restriction. I'd also do the pulley and TB, you'll be over 400 NA for sure.
I have a cutout sitting in my living room. Just gotta put it on.

Originally Posted by HOSS
Def do the pulley and throttle body port. I wouldn't spend the money on the FAST 90/90 until you can afford the heads. IMO I would do heads before the FAST. I need to get a pulley myself.
Yeah I think I'll do the FAST at the same time as the heads, since it'll be all apart anyway.

Originally Posted by 9T9BlueTA
You know you would most likely be over 400 if you didnt have the 12-bolt right? I wouldnt waste any money for 10HP on a piece of paper. Put the $1k away and towards a set of heads.
Yeah, I know, I guess I should have worded it differently...more like, "what other little things can I do before I pony up and buy some heads". I'm not very big on dyno #'s either, the track means more to me.
Old 04-19-2006, 02:45 PM
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Another vote for PP throttle body and UD pulley. That will get you to ur 400 mark. If you were considering spending money on the FAST 90/90 combo, I suggest getting heads instead, they will prolly yield more power. The ls6 intake gets the job done pretty well unless you are trying to squeeze all you can out of the motor. Just my personal prefference I guess.
Old 04-19-2006, 07:13 PM
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Yeh another vote for a ported throttle body and pulley. Plus the cutout if your not into putting on duals. What cat back are you running now?
Old 04-19-2006, 08:01 PM
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Cutout, ASP and PTB will net a nice gain and should easily put you over 400rwhp.

Save the portmatched 90 setup for your new heads.



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