Will bigger cams effect reliability of Honda 400ex

DeathMoose5000 · 11-11-2009, 02:04 AM

does bigger cams effect the relableity of his 400ex and will it keep up wit 450

*Stoopidbot1* · 11-11-2009, 09:41 AM

No it won't hurt reliabilty. Depending on what stage you get. Most increase mid-high end or the RPMs. You won't gain top speed without changing your gearing. Maybe 1-2 mph.

*DirtDemon* · 11-11-2009, 11:01 PM

I think it would take more than cams to make a 400ex keep up with any 450. But, it is a good start and like Bot said, it won't hurt reliability much, as long as you don't go with a cam with a really aggressive profile. If you aren't doing a bunch of other mods to go with it, you don't really want really aggressive cams anyway.

BTW, I changed the thread title.

CK1999_400ex · 11-15-2009, 11:59 AM

a stage 1 or stage 2 cam will not hurt ... but if you go with any thing larger then it will ! i run an XR 400 cam in 1 of mine and it was a big difference .. the dirt bike cam is a little more than a stage 1 cam for the 400ex .. but is a little less than a stage 2 ... its kind of in the middle ... and it is a stock honda cam and is legal to run in any stock 400 class ... i run a few hill climbs that the motor must remain stock... so its legal but its kind of not ...lol... if ya want to know any more about the 400ex send me a message ... i own 2 of the 400 ex's and have 9 motors that i use for different races and or classes that i run...