Back in the "days of old when knights were bold"- - - - -Chevy spray-oiler 235 engines used with Powerglide transmissions had bigger than standard intake valves- - - -1.94" in diameter. Those valves can be fitted to other stovebolt heads with a little creative machining, assuming one can find a source for them. They're getting pretty hard to find, and E$$$PENSIVE, since the last engines to use them were produced in 1953.
However- - - - -there's a work-around available. There's a high performance exhaust valve made for Chevy big block V8s that has almost identical dimensions- - - -head diameter, stem diameter, and stem length. Using an exhaust valve in an intake application isn't a problem- - - - -just don't try to use intakes for exhaust valves- - - -they'll burn out quickly. The only big difference is the location of the keeper groove, and it's a very simple lathe operation to add a groove at the right place. The part is a Manley brand #11583-1, and Summit racing has them, priced at about $38.00 apiece. Not everybody's cup of tea, I'm sure, but this is just another example of being able to use a non-standard part to duplicate something that's getting hard to find!
Jerry
