Re: Problem with lash closing up
 

I learned to get the feel with a feeler blade, that checked correctly with my “P&G Valve Gapper. Ran no faster, showed no better on the dyno using it, than the “feeler blade” after learning that. Seems many set them too tight with feeler blades. If you found what lash runs quickest with feeler blades, there is no power to be gained, in my limited experience, using the P&G. If they are even still made & sold. Worked with mine about 1970. I don’t think I know everything, just sharing what I experienced.

Re: Problem with lash closing up
 

There is a guy that is selling one of those P&G gappers on Craigslist Detroit . Says its for a 427 Ford .

I agree , seems like once you get the feel right on a feeler gauge setting lash goes pretty fast . I would be very interested in how the factory adjusted a solid lifter engines back in the early days . On hydraulics, many engines had no adjustments , like Pontiac , Oldsmobile , etc .

Re: Problem with lash closing up
 

Ford had go nogo feeler gauges on the FE 427 line at Dearborn Engine plant!