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Discussion Starter · #1 ·
Did a 274 hyd comp cam in 390 build. Fired reletively quick. Clattered a wee. We kept breaking in. Temp got SO HOT it stopped engine. All sounds good. One roller rocker .018 loose. I snugged enough to not clack but with not much pre load. Cam scrub or I'm told cheap roller rockers sometimes need re adjust. Thoughts?
PS all break in oils.
PSS Surprisingly it snaps to life. I lost one b4. Seems to me that from first click sound to banging popping wipe werent 30 mins
 
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