What pushrods?
I'd still measure things to make sure you won't have any issues.
http://www.4secondsflat.com/valvegeometry.html
With my combination I needed 7.00" pushrods! I have a MP short block w/ Edelbrock heads, Crane rollers, Comp XE274H cam, and FelPro gaskets. I had Smith Bros. make them for me.
http://www.pushrods.net/
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