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wanting 380-400rwhp in my ls1 help?

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Old 09-04-2008, 11:03 AM
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Default wanting 380-400rwhp in my ls1 help?

peice me together guys a simple cheap kit parts id want to buy to get me at 400whp rougly while keeping gas mileage over 20mpg, and no nitrous or boost please.. im lookin at mild cams, headers, intakes roller rockers.. basic bolt ons besides the cam.

i so far am tossing the idea of ls6 cam and springs.
1.8 roller rocker
fast x intake and tb 92mm
headers and full exhaust
tune!

not sure if ill be at 400whp or not tho. i just dont wanna tear apart the engine or mess with the heads. cam is bout all ill do in opening the motor up. help??!
Old 09-04-2008, 11:07 AM
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you may want to look at something like a 224 or 228 range cam and 1.7 rockers look at the sponsors or check out the dyno section to get some ideas. i dont think youll see 400 rwhp with a Z06 cam
Old 09-04-2008, 11:22 AM
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Like said ubove get something bigger than the ls6 cam. I would stay away from the 1.8 rockers just get a cam with alittle more lift. What year is your car? If pre 01 get a ls6 intake maifold or a fast, headers y pipe and cat back or true duals. I had a thunder racing cam 224/224 563/563 112lsa, with full bolt ons and made 396rwhp/383rwtq. Check some of the sponsors they sell complete cam kits... cam, springs, push rods and gaskets.
Old 09-04-2008, 11:23 AM
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va speeds 228 made 400 id lokk into a cam in that range i dont see 380 with an ls6 but who knows anything is possible...if you had the ls6 heads along withg it yeah it could happen
Old 09-04-2008, 11:40 AM
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You can do it with a little more cam. And skip the 1.8 rockers, the stock ones will work fine. Also, don't forget to install an underdrive pulley while you're there.
Old 09-04-2008, 11:45 AM
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IMO you dont need Fast Intake and tb for 380-400rwhp if you want a cheap setup.

Then keep LS6 intake,ported TB, TR or TSP Cam with valvetrain, Pacesetter Headers,
TSP true duals, Pulley maybe and tune.

this setup should get you 380-400rwhp if you have an M6 Car.
Old 09-04-2008, 12:07 PM
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running 1.8 rockers virtually eliminates most of the popular cams on the market. they are not compatible with most lobe designs.

i'm running the Torquer V1 with stock gears and i still get 25-26mpg highway, and 16-19mpg around town. and that's with a crappy part throttle tune.
Old 09-04-2008, 12:11 PM
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Take a look at my sig for what you are looking for. Remember I have a 12 bolt and 4.11's that rob #'s. There's also a graph buried in TA Pics.
Old 09-04-2008, 06:57 PM
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You could probably fart in your intake and make 400hp. haha JK but, a nice cam, and bolt ons and your good to go.
Old 09-04-2008, 09:37 PM
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Definately look to something a little bit larger in the camshaft area. We dyno tested the 228R TSP camshaft to just under 500 flyweel horsepower on a stock head engine! The 228R TSP camshaft made 490hp & 432 lb ft of torque while the basline before the camshaft made 416hp & 420 torque! How about a 74hp gain from a camshaft swap that drives really unbelieveable!! Give us a call tomorrow & we can provide you with our dyno testing of these camshafts your looking at.
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