Do these intake numbers refer to the valve head diameter?
I only ever heard about standard or the larger ones for engines with powerglide trannys.
I have a NOS 848 head I like to use with a late 261. The head is factory with guides and has never been installed or milled.
I like to tune for street and mostly freeway driving at 2500-3000 rpm average and 3500 max.
How much if any should I mill this head?
Will porting & polishing make a difference for this average rpm?
What kind of pistons and rings shall I shop for?
I heard about forged and cast ones.
...I got this 54 Chilton's motor age magazine with ads presenting the latest chrome rings, but also heard to stay away from them...
This will be my first rebuilt, if you can't tell already...
