GP300 head onto EC/XC

[Harty89]

Has anyone been lucky enough to compare a 18/19 GP300 head to a EC/XC?
Failing that, how do the GP vs EC/XC compare riding back to back power wise, is it noticeable?

 

[Gasser Nate]

Yeah I would not bother. Still too much compression and too wide a squish. Better off to get the ex/XX head machines by someone like Tsp performance. Much better result.

 

[Wimpy525]

Yeah I would not bother. Still too much compression and too wide a squish. Better off to get the ex/XX head machines by someone like Tsp performance. Much better result.

I would second this, I have the GP and did the RK head and has made a big difference. But could have saved a ton by just getting the stock head machined.

 

[Harty89]

Cheers for the replies. I thought as much but i noticed a GP head for sale so thought i'd check