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  1. Help Grinding 406 Connecting Rods/Bolts For Roller Cam Clearance?

    Engine
    So I’m in the middle of a SBC 406 top end upgrade with the engine block still in the car consisting of new AFR heads and a new retro-roller camshaft. The first retro-roller camshaft once installed and indexed would not clear the number two (I believe) connecting rod. It would lock the engine at...
  2. Strange sort of........

    Engine
    I'm getting a 400 sbc built for my 68 camaro, got every thing ordered to match as close to one and other as possible cam to heads heads to intake carb pistons to crank, etc. So a couple of days ago the machine shop got all the parts in and went on to balance the engine but to there and my...
  3. How much power loss when valve lash is way too loose?

    Engine
    My 406 sb was dynoed at 532 horsepower...valve lash was set at .016/.018 cold as an initial setting. The lash was never adjusted after the motor was warmed up or before we made the dyno pulls. I'm gonna check them hot but many of them could be loose by .007 to .008 from what I see (and hear)...
  4. help w/ engine noise

    Engine
    out of nowhere my solid roller cam, AFR-alum head 406 started making a loud noise and I shut her down. it was a loud banging/ clanking noise over the pass side head. drained the oil, removed filter, checked plugs, removed valve covers, checked fuel pump. nothing looked abnormal so I ran her for...
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