GS450 to 500 swap questions

invalid@example.com (diptenkrom), diptenkrom
Thu, 26 Feb 2026 21:44:54 +0000
Performance/Tuning/Mods

I have bought some of the parts already. and i am ramping up to doing this swap soon.

I have a 500 cylinder jug and pistons, as well as cams and a badly running 1981 GS450 scrambler build.

I read elsewhere that the head studs from the GS500 were better, so i will be ordering those

My biggest question is the cams. how do i figure clearance for the valves, ;and how do i know what needs to come off the piston to make valve clearance?

i do plan on using GS500 carbs or some other upgrade...