yz 426 and 450 cylinder

[markvette]

ok will a yz450 cylinder work on a yz426 motor. bore is the same so what is different and can it be made work without a lot of work. a new yz426 cylinder is $367 and a new yz450 cylinder is $211.

Mark

[kyledvor61]

Yes it will work I have a 450 cylinder and head on my 426 bottom end right now.

I have a perfect stock 450 cylinder for sale.... PM me if interested

[voodoochassis]

same cylinder will work just slap it on,many will tell you it will not work but it will.

[C41Xracer]

i know this is an old post but will the 426 head work with the 450 cylinder? and what year 450 cylinder do you use?

[kyledvor61]

no. 426 cylinder has to have 426 head. and 450 cylinder has to have 450 head.

[C41Xracer]

damn, my head is ported already, what about stroker cranks?

[kyledvor61]

That, I have no idea. The crank in my motor has a 63.4 stroke, which is what the 06+ yfz's had, to make 449 cc instead of the older 439. But, it says Hot Rods on it, and the wrist pin is an 18mm instead of 20mm so it as to be a WR.

Anyway to answer your question, no clue lol.

[C41Xracer]

actually you answered my question, but i wonder if my 444 cylinder will work with that crank

[kyledvor61]

I wouldnt see why not?

[C41Xracer]

i guess theres only one way to find out..................i wonder what the displacement would be then

[kyledvor61]

What is the bore? 96 or 97?

[C41Xracer]

97mm

[kyledvor61]

468cc

http://www.bgsoflex.com/cgi-bin/displacement?ncyl=1&diam=97&osize=0.0&stroke=63.4&mode=Millimeters

[C41Xracer]

thanks