Pull a lifter out...if its a solid lifter then adjust it to factory clearance.....if its hydraulic adjust it to zero lash. But all the 235's I've seen were solid lifter cams....that's why they always make that loud clacking sound. Especially the older gen ones. TJ



1964 C20 LWB 292 6 cyl/sm420 parts truck.
1966 C10 SWB 292 hotrod 6/TKO600 tremec 5 speed.
1964 GMC 1500 LWB 305E V6/ SM420 "Crustine"
1977 C20 LWB 496/turbo400(soon to be 572)
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