Well no. There'll be no cracking in here.
Valves. They control when intake and exhasut enter a cylinder head (and a bit of how much).
Now, I'm on a psychotic binge on making my inline faster while being cheap at it.
As far swapping heads with other inlines, could I put another head onto my 250 (from a motor that is other than a 250) and improve engine performance?
If this is so, what head would you recommend putting on a 1967 250 inline 6 that would also fit my original intake and exhaust manifolds?
