225 Porting

If you want durability, spend money NOW and have hardened exhaust seats installed.

My machinist didn't want to do it but I insisted cause I wanted another 50 yrs service..
When I got the rebuilt milled head back and looked it over, I just couldn"t throw it on the fresh block so I did some pocket porting and gasket matching. I also ported the intake and exhsust manifolds a little, nothing outrageous. This was 4 yrs ago and yeah, I hogged out the exhaust outlet.
I didn't screw the seats on this one up quite as bad as the last heads I tried to port, but once it hits the machine shop for a shave and the rest of the "valve job" it's going straight onto the block. So any and all porting will be finished before then.
I had a set of 318 heads done once and then decided to take them apart and clean them up a bit and had to take them back to the machine shop for rework since I oops'ed a few seats.