Does anyone offer "new" heads with hardened valve seats installed? Only want to buy and do heads once so want to go overkill. Would be great if I could find some w/ hardened seats and a port/polish job already done.
From what I understand I wouldn't do a port and polish head on a daily driver. Makes them to weak for cracks. But hardened seat and a valve job I'd look into. I honestly don't know anyone that has brand new one heads with all that done.
78 F-150 300 straight 6, 3 on the tree
03 F-250 6.0 Play toy
06 F-250 6.0 (general nightmare) 2.5 pulling truck
12 F-350 6.7 Tow rig