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Old 09-28-2010, 11:13 AM   #1 (permalink)
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Default im trying to make my ltz400 faster what do i need

i got a ltz400 i need help making it faster it has a 470 kit in it frc carb 39 web cams 540/539 yosh slip on kn air fliter cdi dyna tec whats do i do next
ltz400 +4stroker crank 440 big bore kit 39m fcr carb 540/539 grind webb cams kibbel white valve springs kn air filter dyna tec cdi yoshimra slip on pipe. ltz470
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Old 09-28-2010, 12:02 PM   #2 (permalink)
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first off i would uncork your quad by getting rid of the stock headpipe and go with a full system, after that a port and polish will help, 400ex intake boot, and some naawwss!
2008 ltr450 LE murdered out (sold)

2003 ltz with yoshi stroker motor (sold) December 2010 QOTM

2004 ltz limited edition drz kit and cams (fun)

2004 nissan titan runs 13's (tow vehical)

2005 klx 110 with 143 big bore (my toy)

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Old 09-28-2010, 01:24 PM   #3 (permalink)
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i have a full dg exxelorator stage 3 i will sell its got a shortened muffler just repacked it bout 5 hours ago(its bout 10-12 in long loud ) ill let it go for 175 +shipping obo its a great pipe and makes a big diff in power.

pm me if intrested for pics or to buy it
in process of a ltz600 build cbr600f2 engine
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Old 09-28-2010, 02:27 PM   #4 (permalink)
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If you want more power change the 540/539 to some 539/539+3 custom Web cams, bore the fcr to a 42, and +1 valves.
Like they said before change the slip on. Get a full exhaust, many recommend the Yoshi rs-3.
And a good port and polish.
Also if you don't go for +1 valves change the stock valves anyway. They are a two piece friction welded design and they can break at high rpm.
'07 LTR 450 - Yoshi rs-5, Intake Hotcam cam, 08 exhaust cam, FuelAtv intake, PCIII, Sandtars all around.

'03 White Z400 - SOLD

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Old 09-28-2010, 02:59 PM   #5 (permalink)
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heavily oxygenated race fuel, and proper tuning after you change out the stock header.
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Old 09-28-2010, 09:21 PM   #6 (permalink)
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INTAKE and HEADDER The stock stuff is way restrictive.
03 LT-Z 470
Max Power 12.5:1 94mm Piston, Hot Rods +5 Stroker Crank,
Custom Web Cams, with adjustable sprockets,
Ferrea +1 Valves, Kibblewhite valve springs,
DRZ Manual Decomp. CFM Motorsports porting,
HSR45 carb, Custom intake,
Barker's Performance Full Exhaust
Trailtech flywheel, Dyna Programable

Need a Barker exhaust system? Web Cams? Valves? Porting? Shocks rebuilt? FXR Gear? Spy Goggles?
CFM Motorsports 712-209-2212
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Old 10-16-2010, 12:51 PM   #7 (permalink)
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i got a fmf power bomb full exhaust and i got a 400ex boot to so u could let it breath better of for sale let me know
434 athena kit on race gas ,web cams,drz kit,ferrea valves, trail tech -16 flywheel,jrd longtravel a arms,tcs long travel shocks, bare gusted frame (black pc ), rebuild rear stock shock by tcs,+4 lonestar axle, yoshi cdi box,fmf tit.4 with power bomb header, eddy carb with a cut air box, k&n filter with a 400ex boot,tag over sized handle with +1 tag steering stem , black ac nerf bars, r.i.s front black bumper, x factor shrouds,black plastics with K&K decals,maxxis 18 inch tires (rear) kenda klaws 20 inch tires (fronts),beadlock omf rims(rear), black pc itp rims (front)
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