someotherguy
I'm Awesome
Stick with the zip ties. They'll last forever, or until the next time you need to pull the cap and just cut 'em off. Oversize screws will just end up breaking the tabs off the distributor body which is plastic, and already cracked.For the sake of anybody searching in the future, best I can find is that the original cap screws (GM part #10475922) can be replaced with an oversize screw (GM part #10457666). I would assume that just makes the problem bigger at some point. If the distributor holes stripped with small bolts, they're going to strip with bigger bolts. I see that as a temporary fix, though it might be several years worth of temporary, until the next time you need to unscrew the cap.
The Dorman part looks promising, but damn...somebody is making a fortune stamping those out in China, and getting 20 bucks a pop. And if I need it today, $30+ at my local parts stores. I've also seen it suggested to put 2 small studs in the distributor, with various combinations of Loctite or epoxy (JB Weld?), and never have to deal with it again. I can get a couple little studs at ACE hardware for probably 27 cents.
For now....zip ties to the rescue
Richard