Will these cams work (426)

2 replies to this topic
  • solarRMS

Posted March 28, 2008 - 12:36 PM


Ok i bought a set of new hot cams from a buddy that got them for his 03' 450 I am puting them in my 00' 426, hot cams tells me these wont work, the part # is diferent but the only diference is the 426 hot cam has an adjustable sprocket. Does anybody know if these will work!! 426 part# 4035-1E and 4002-1N intake...... I have, part# 4023-1N and 4022-1E for a 03 and up 450, im thinking these will work please help thank you..

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted March 28, 2008 - 01:15 PM


They may eventually work, but it won't be easy, and I don't recommend it.

The 426 and 450 heads are different, and the timing sprocket tooth profile is also different. The sprocket differences were enough to keep people from trying to use the 450 exhaust cam in a 426 for a while. It doesn't seem sound, on the face of it to use two such cams in the engine, although no one has yet had a problem with the 450 exhaust cam due to this.

The other thing is that the timing marks on the cams cannot be used in a 426. When using the 450 exhaust cam only, one times the intake cam by its original marks, then times the 450 cam in a certain relationship to that. Since neither set of marks would align correctly, you would have to get the correct timing specs from Hot Cams, and use a degree wheel to set up the engine, or guess at the timing by eyeballing the other end of the cams (don't try this at home).

It is more or less within reason that it could be done, but if it were me, I think I'd do something else.

  • solarRMS

Posted March 28, 2008 - 05:40 PM


thanks again gray, dont know what (any of us) would do with out you!!!!

Related Content


Chubby dad, looking at bikes , First trip to the orange/black forum ! by Slow_ride

Dirt Bike   Make / Model Specific   KTM   250-530 EXC/MXC/SXC/XC-W/XCR-W (4-Strokes)
  • Hot  28 replies

2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

Help with 2000 yz426 by weekend woods racer

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  36 replies

Michigan Motocross Tires by 288yz450

Dirt Bike   Dirt Bike Regional Discussion   North
  • 1 reply
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info

  • 0 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.