Join Date: Sep 1999
Location: Vancouver, Washingon
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Re: Should a newly installed crank be tight?
Checking the bearings and crank in the 305 block is a good idea. It's more common to line "hone" blocks. Line boring is not as common. Line boring will remove about .010" metal from the main bearing caps, then the main caps are bored. Line boring will move the crankshaft closer to the the camshaft. Line boring a block will require a special undersize timing chain and gear set to correct the new line bored closeness of the crank and cam. Line honing will not remove much metal from the main caps, then the main caps are honed. It's common to line bore a block when the main caps are donated from another block. Seems it's common for some people to loose the main caps to there block, then a machine shop will need to line bore the mains to get the mix match of mains caps and block correct.