I see that the difference between the 60lb. and 80lb. pumps on Butler's site is mainly the spring length.
But is adding a shim to a 60lb. pump just as good as using an 80lb. pump?
Otherwise, why wouldn't the 80lb. pump simply be using a stiffer spring instead of the longer spring?
I hope I am not asking too many questions, but I got stiffed by crooked machine shop and had to go to another shop to get the short block redone correctly.
So I want to be sure everything is correct this time.
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