It's not quite as cut and dried as taking off .110 or any other amount
from your head.
1. You must first determine which of the 3 different heads you have on
your car.
2. Remember that the head may have been shaved before.
3. The most accurate way is to cc the combustion chambers. I would
recommend that you pick up the competition prep book for more details
(since I'm a crappy typist!)
FWIW when I took a head to 10 to 1 CR, I did need the short pushrods. I
got em at British Parts NW since they were way cheaper.
Good luck,
Jim
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