I resolving the dowl issue, I got it down to .13"
I finally got through to Comp Cam Tech Support. Gave him all the info and, it's a bit of a toss-up.
End play is not an issue with flat tappet hydraulic cams, even less so with the gear drive as it does not have the chain dragging on it. The cam will be pushed forward by the tapered lobes into the thrust plate where it stops at the proper location, and the gear will simply step out the .1" and ride on the idler gears with no issue. He said he would be a lot happier if it were only .10" and not .13"
But, he thinks the .13" end play is a bit excessive none the less, he would like my setup to be at the most .1". He left for a bit to consult something or someone and came back suggesting I put another upper gear on and see what readings I get. He did suggest that it may be an issue of the gear not fully seating on the cam, I am going to have to order another timing gear/chain set so I can install it and make a measurement. It is possible the Pete Jackson upper gear with shim might not be seating correctly on the cam snout.
He would not say if that is or is not a reason for the distributor gear issue. And, it seems the gear Summit sold me was the Melonized gear. That was the one that was destroyed in less than 30 min.
If this resolves the end play issue, I still say I am good with what I have using the gear drive as the tech stated.
Last edited by 69GT350H; 06-07-2019 at 12:39 PM.