Morning All, my buddy (Buick guy) is getting rapid increasing crank end play on his 455. Build spec is .003-.009, his was .006 but after not many miles, less than 500, it’s up to .015. His forums not being much help, hoping some of you engine aces can chime in with a possible cause/solution. Not aware of any such issue with our Mopars. It’s a 70’ GS 4 speed car.