Looks like your rocker bolt pulled or loosened up. I notice you didn't do a trunion upgrade on the rocker arms. I would definitely look into doing some upgrades, the trunion kits are around $140 and include longer Allen bolts to give better reliability. Doing some research after I bought my L92 Super Victor.....it seems the single plane intakes give up some torque and HP on a normally aspirated LS motor over the factory plastic intake.....around 30-40 ft/lbs in the lower RPM ranges....the Victor only seems advantageous in high RPM operation ( over 7K RPM ) I hope your also running LS3 intake valves, they are 90 grams, the L92 valves are heavy around 116grams, if you don't have LS3 hardware the hollow stem Ferrera stuf is 106 grams. The factory LS3 valves are pretty good stuff and really lightweight but, don't put a lot of spring pressure on them! If your going to rebuild the LS do yourself a big favor.....pitch the stock connecting rods for some Manley rods or Callies forged rods cheap insurance. Brian Tooley racing has some great hardware for LS valve springs.....stay away from the titanium retainers....stick with tool steel retainers....almost as light as Ti and won't flake away in operation like Ti will. If your motor builder know his stuff on LS motors he will know he needs to port the oil galleys and drill the lifter retainers for high RPM oil drain back. Hope all goes well in the refresh
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