Big block problems (Chevelle)

[72c20customcamper]

Got stuck again with my Chevelle same problem as before the rocker nut cracked causing a loud tic and a miss . Second one in a month first one said ok crap happens second one not so much . I’m changing them all out but it’s only happening to the exhaust rockers . Seems the builder ground down the hex head enough to clear low deck valve covers don’t know why I’ve got tall decks. My opinion is he heated them up to much taking the temper out and hardened them making it brittle. I had one at my house but I needed to be towed as it was getting dark . Not out money because it’s covered under my roadside assistance . Just pissed me off to no end .

This morning I went and got the extra at my garage about an hour from my house took literally 5 minutes to fix . The new nuts are $50 so I’m not going after the builder. Just more or less venting . But here’s a picture I took last night on the side of the road glad I always carry some tools.