Thread: 69 460 valve train upgrade?

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If it already has the holes drilled and tapped to 7/16" then you save a bit on machining costs..... What pressure are your valve springs? The stud girdles are reasonably priced and serve to not only keep the studs all straight but will also help to maintain the valve adjustment.....

The valve springs are the stock ones but are all new.

Originally Posted by topgun

The valve springs are the stock ones but are all new.

Stock installed height of the OEMvalve springs is supposed to be 1.820", and the seat pressure is a measely 80 pounds or so. Hopefully you increased seat pressure slightly; otherwise do not expect this engine to rev much past 5000 rpm.

Since your installed height has not been increased, be sure to watch closely for the rocker body bottoming out on the stud even after you have determined correct pushrod length. There are a few ways around this if you have this problem.

Paul