Bigger pushrods?

BlackBandit

God loves Buicks!
Joined
Mar 29, 2003
I'm going to swap in a roller and was wondering what the largest diameter pushrod is that can be run with stock rockers? TIA
 
If you try to go with bigger pushrods, you may have interference between the pushrod and the cylinder head- the little holes are not big enough to clear bigger pushrods unless the castings are exactly right, and the rocker arms have exactly the right offset. But there are plenty of high performance pushrods available in the stock diameter.
 
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