I pulled down the knocking 350, it spun the #1 rod bearing. I kept the block and main caps, the rest is trash. The 204/214 cam still looks great and the lifters easily came out. I installed the cam, straight up on the unknown double roller timing set in the 403 where it was in the 350, since I degreed it. I used the oil pump that was in the 403, a Melling 22F. I cleaned up the already Gold 350 pan, there were a lot of metal in the bottom, lucky the cam survived. I already installed the AMC 252 neoprene rear main, I installed the upgraded Felpro pan gaskets already coated in rubber, just Optimum Black on the lip seals and corners. I put the shields on both motor mounts. Also Felpro timing cover and fuel pump gaskets, both sides lightly coated in Optimum Black along with a new front seal. I decided to put both shields back on the motor mounts and torque them to 80 foot pounds. The flex plate that came with the 403 and balancer back on. The short block will get dropped in tomorrow then the #6 heads and the Performer intake which I stole the restricted heater hose outlet off the #17 307 intake to save the heater core.