Milling TR6 head to 10:1

[rgb@hal.com (Roger Bolick)]

Unless your engine is perfect, I would suggest against it as
it will push bearings, etc. to the limit.  Also, make sure you
know your starting point PRIOR to messing with the head, i.e.
do you want mine, ~11.5:1 runs great on super WITH additive and
reduced timing...

IF the engine is perfect, buy a used head and give it a try, this
way the mod is reversible if you get tired of paying 30 cents a
gallon more for gas.