SB Cam Thrust Plate P5249637 no longer made? Only tensioner now?

The first motor He decked my block to 890 without telling me. My diamond pistons were not there. because he couldn't use my rods due to the pin being to big to keep it under the cut deck.To use the SB CHevy rods he had Offset grind another crank. Where did My 4 " Callies go or my Carrillo Bullet rods The intake was only about 1/8 inch thick. from him cutting it.

The worst was he charged me $450 to CNC fly cut the pistons. This is where he became liable. The motor came apart on startup after some dyno pulls. Come to find out the valves were hitting the pistons.

I drove out to Port Matilda. Pa. He was not there . But his brother was. There was a sprint motor there that came apart the same way and destroyed the car. Talking to his brother led to to fly cut method they used.

He stated this in front of two machinist I took with me.
They had a long stem file cutter they ran though my Guides and cut the pistons in the motor using my heads as their tool. They cracked most of the guide out of the heads. I asked his brother how this could work because the piston would rock. He said They do it after assembly. I could not believe my ears. I didn't know if I should laugh or cry.

I took the parts he got me. New crank , Rods, pistons. T&D Rockers that were terrible. Indy heads in which the quality was Real bad. They must have been returns. Here is a picture of the first X-block batten headed motor in the car. It was a 428 Made 593@7200

I sold the X-Block I got from them. Ray Barton gave me the resto block in with a deal for a couple 68 Darts and Barracdas over a Pizza. Then I started over. I Could have bought a Hemi for the total cost of a small block build.

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Really not sure how to respond to this post. I have had Ryan do work for me. Seems to do very nice work.
Not to pick sides but this sounds like one of those stories where Ryan would have a different answer as to what went wrong.
Sounds to me like there were communication issues as to what the build plan was and there were mismatched parts that could not be used together.
Regardless you have a motor that was run without verfification by whoever assembled the motor that there was sufficient piston to valve clearance.
I have in the past had Pistons flycut for clearance and the machinist and I got into trouble and ruined a set of Pistons in the process.
We guessed on the location and guessed wrong. On the replacement Pistons we put a modified valve stem ground to a point down the valve guide to mark the location of the cut.