Machine shop called again today, said there was wear on the front of the block where the cam rides. He recommended a torrington needle bearing or a bronze shim. What do you guys use to keep the cam from moving in and out?
I'd recommend, if the block is scored, using the bronze shim instead of the torrington brg as it's installation doesn't require the deeply machined landing that would possibly break into the oil galley- especially if it's been opened up. I rely on the machined face on the cam and a thrust button to limit total axial movement to .010". Too much forward movement will cause a loss of lubricant flow to the cam/distributor gears. I'd also recommend having the machine shop check the lifter bores to be perpendicular to the cam bore. Hope this helps.
