Reply to "Pushrod diameter - 393cui"

George PAdmin.

That is completely dependent upon the wall thickness of the tubing, the material the tubing is made of, if the tubing has been heat treated, etc. In other words, knowing the tubing is 5/16" in diameter is not enough.

I agree with Garth, the manufacturer can provide guidelines, but it is also dependent upon the length of the pushrod, the maximum engine speed, and even the angle of the pushrod. The 351C with its canted valve heads is much harder on push rods than an in-line type cylinder head.

-G

3/7/1210:08 PM

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