best 400ex cam

[backwoods 400ex]

HI i have a 2006 400ex with a lexx pipe uni air filter, sparks key and some other little things what would be the best cam...ive been looking at a curtis sparks or web cam?

[bigballz400]

i seen this in another thread..........hope it might help
cam: Intake lift; Exhaust lift; Intake duration; Exhaust duration

stock............... .316, .302, 234, 238

XR400.............. .326, .321, 240, 244
HRC................. .350, .339, 254, 256
GT Thunder....... .350, .345, 256, 256
WB Track.......... .350, .345, 256, 256
WB All Around.... .345, .335, 240, 248
WEB 450/451..... .350, .345, 256, 256
WEB 479........... .378, .378, 250, 250
WEB 463/9i....... .385, .370, 272, 270
Hotcams stg 1... .354, .354, 246, 246
Hotcams stg 2... .354, .350, 254, 248.5
HC stg 2 (old).... .348, .349, 254, 254
Hotcams stg 3 (stroker). .358, .354, 262, 257
Megacycle x1..... .346, .346, 246, 246
Megacycle X2..... .378, .378, 254, 254
Megacycle X6..... .402, .385, 270, 262

[honda400ex2003]

it all depends on where you want the power band to be and how you want your machine to perform. it will also depend on compression and such too. it is just not as simple as dropping a cam in. the wrong one and you will not be happy with your choice.

what sort of riding are you doing?
most of the time with a stock bore and compression the stage 1 hot cam will be the best cam for improved mid and top end as compared to the stock cam. it will probably have about the same or just a tad less low end though than the stock cam.

my vote goes to a stage 1 hotcam or something close to that grind. there are grinds that are similar to this by both sparks and web. the x1 by sparks is sort an inbetween stage 1 and stage 2 hotcam sort of deal that may be another option if you want a bit more top end out of it.

i vote the stage 1 to go with your sparks key and you would be happy with a general all around style setup without going to crazy.

steve
steve

[backwoods 400ex]

OKay i ice race and trail ride but i only have stock compresion id like a whole powerband gain if thats posible

[CJM]

You want the stage 1 then, it works best on stock to mild motors with stock sized pistons.

[honda400ex2003]

stage 1 it is. steve

[Colby@C&DRacing]

I agree stg 1 with stock compression

[backwoods 400ex]

okay thats what i was thinking but one of my friends that races pro class and the owner of Rossier Engineer in Plover Wi told me hot cams arent the best and i was just wondering what brand stage 1 cam would give me the best gains????

[CJM]

Originally posted by backwoods 400ex
okay thats what i was thinking but one of my friends that races pro class and the owner of Rossier Engineer in Plover Wi told me hot cams arent the best and i was just wondering what brand stage 1 cam would give me the best gains????

its really not gonna help you too much since you still will have a stock bore. Not gonna be like you added another 5hp or make the quad a rocket. What it will do is give you lowend torque. kindalike going from driving a 4cyl car to driving a v8 if you know what i mean. changes the power curve of the engine when you drop in the cam.

The cam really only changes where you make the power. stage 1 gives you stump pulling torque, this is good b/c it will get you going quick, bad is once you reach the wide open throttle it tapers off a bit. stage 2 works better on a modified engine, IE 416, 426 with exhaust, etc. This gives you all around gains but much higher top end than the stage 1 and its good if your gonna go fast, people make up for the loss of the lowend by the power the machine itself makes due to the larger displacement, gearing, carb, etc.

The sparks drop in cam is said to be between a stage1 and 2 hot cam, almost like a 1.5. ive never used one but its what i heard.