Thanks for all the very useful advice. It's very appreciated.
I can get a '61 NOS 261 head complete with rockers, valves and springs. The casting# is 3836850. The 850 is probably the 261 version of a 848 235 head.
Anybody knows if that will work?
Will I need a different push rod length with the 261 head?
I am thinking of installing hardened valve seats, although the stock ones are unused (but not OK with unleaded fuel).
I don't want to keep using the lead-substitue - not sure if it ever really helped.
I will do all the necessary work on the block and I will definetly go with Patricks cam and lifters.
His ring & pinion rearend set has made the greates difference so far on my daily driver.
