You need to find out for sure. I believe all MSD distributors come with an iron gear. So you, or someone, would need to install the bronze piece. If it is bronze on a billet cam and its gone in 10 miles, I would look into a possible oil pump issue.
Some Comp Cams have a removable rear journal and cam gear that doesn't use the bronze gear. Is that what you have?
well thats my thought "the oil pump" which I replaced not very long ago the dizzy gear I am almost 100% positive is /was the right one. I put in a new oil pump when I replaced the rod and main bearings about a month ago.
But like I mentioned it was all good when with the dist locked .
I had this happen also. MSD is now using chinese gears on their distributors and they will wear out rapidly. 10 miles seems excessive though. Drop the distributor in without a gasket to see if it bottoms on the oil pump shaft. If it doesn`t, you should be fine.
I lost mine on a 40 mile drive to the dragstrip. When I got there. I pulled the distributor and borrowed a gear from another racer. I raced all day and then lost a rod bearing. Turns out the cam gear was damaged enough that it tore up the new distributor gear. The timing was far enough off at that point that it got into detonation.
By the time it was done I replaced the entire rotating assembly and had to go .010 larger on the bores. Make sure that your cam gear isn`t damaged!
The best way to go on a replacement gear is to use a GM replacement melonized gear and have it honed to fit the MSD. Also, remove the lower oring on the housing where it seals the cam galley and cut a small groove with a dremel cutoff wheel to lube the cam and distributor gears. Clock it in the right place so it sprays on both gears.
In an effert 2 possibly help someone else
verdict is not enough gap on the MSD dist collar
when tightened down it pushed the oil pump shaft hard against the pumps houseing therefore causeing unwanted friction and resistance.
thanks to all those that helped I owe you a COLD 1