340 build

While it is good practice to keep the pushrods/rockers in order if not no big deal.Have the machine shop check the balance while its there.The valve pockets can be laid back without machining the tops,hell its only the intake pockets you can probably do that with a dremel.You already have witness marks.While checking the valves for straightness before you pull the heads apart fill the champers with alcahol or dry gas to see if they leak if not and free in the guide get some lapping compound and check the seats as 318 will run showed in his 318 build.You have to buy a cam and lifters anyway so have the machine shop check valve spring for enough pressure for the cam.If the bores arent bad you could probably give it a quick hone and your ok.