Hello. Got a couple knucklehead castings I'm working over to install on a 86" stroker. Both required some work, a little welding, and thread repair. That's all gone well and done. Now noticed that one intake seat has a larger ID than the other. This one is @ 1.700 ID x 1.875 OD for the installed seat. The other is stock like @ 1.562 x 1.875. I think there are two alternatives to have them match. Find OS intake valves and open up the stock seat to match the OS seat. Or, pull the OS seat and intall stock seat and stock valves. Assuming I can locate OS intake valves, would it be better to go that route to get more flow seeing it's a stroker and using a heartier Leineweber #2 cam? I have seen OS intakes at 1.875 from Flo Headworks and 1.94 elsewhere. That's 1.875 valve over a 1.700 seat so does that leave enough contact area for the seat? I've also seen posted oversized knuckle valves at .002 and .004 OS. Is this in reference to head diameter or the stem? I also have another abortion of a head that looked to have had 2.+++ car intake valve but it must have had to be cut down as the stem tip was mushroomed big time.
Any ideas where to find OS intake valves? I've looked at Manley and Rowe already plus Flo which I have to check out.
Any advise or comments are appreciated.