Cam Performance

[VOODOOCHILD]

I have a 98 YZ400F and did a search for info on the Hot Cam vs. 450 OE. There was plenty of info on a 426 and the performance results , but found nothing for a 400. Are the results the same? I would assume that the 03' 450 Cam would have the same broad range effect as it did on the 426 and the 426Cam would be more benefical with purchasing and using both cams together. I am more than likely going to go with the OE. Need some input to make my decision. Thanks for your time.?

[jayh300]

i did the hot cams in my 99 400. If i had it to do over again, I would prolly do the 450 cam. it is cheaper and from what I have read gives more power than the hot cam's ex cam alone. on mine, the abrupt low end hit right off the bottom is gone,14/51 geared, and the low end power is way more usable, not sure that is the correct term, but that is the way it feels. It does start a little different than before, but you get used to it pretty quick. We trail ride exclusivly and it is way easier to deal with without the decomp lever now and usually starts on the first kick when warm, no problem. You will need to re-shim probably, and if you don't know whow long the cam chain has been in it, I would put a new one in for sure.

ja