[chuckbrandt]

Since I think we determined you have non-adjustable valvetrain there is just one basic pushrod length for the pushrod with ball ends on both ends. But... because there was no other way to adjust the length Ford used to sell them in longer and shorter sizes to compensate for milling the heads etc.

I think what you'll have to do is get some standard ones and compare them with your good ones. You could have custom length ones for all we know, it's fairly common to have to make up custom pushrods these days.

Chuck