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morepowerjoe · 03-14-2024, 04:06 PM

I'm not sure about all that turning stuff, but this is how I do it. Get to zero lash on the base circle of the cam by rotating the engine until the cam is not on the lobe. Put the rocker arm on and hand tighten the rocker arm bolt all the way down and you should be able to just spin the pushrod checker. If it's too loose remove the checker and unscrew the checker until there is no play in the pushrod length checker and you can just spin the checker. If it's too tight then screw in the checker until you can again just spin the checker. Then measure the checker with a large caliper and add however much preload you want to run. I shoot .060-.080

So if you have measured out a 7.3 inch pushrod with your checker and add say .060 for preload then you would need a 7.36 pushrod

I bought this caliper to measure the pushrod checker
https://www.amazon.com/VINCA-DCLA-12..._ba_s_3_t&th=1

03-14-2024, 04:06 PM	#3
morepowerjoe Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020 Location: Austin, TX Posts: 2,155	I'm not sure about all that turning stuff, but this is how I do it. Get to zero lash on the base circle of the cam by rotating the engine until the cam is not on the lobe. Put the rocker arm on and hand tighten the rocker arm bolt all the way down and you should be able to just spin the pushrod checker. If it's too loose remove the checker and unscrew the checker until there is no play in the pushrod length checker and you can just spin the checker. If it's too tight then screw in the checker until you can again just spin the checker. Then measure the checker with a large caliper and add however much preload you want to run. I shoot .060-.080 So if you have measured out a 7.3 inch pushrod with your checker and add say .060 for preload then you would need a 7.36 pushrod I bought this caliper to measure the pushrod checker https://www.amazon.com/VINCA-DCLA-12..._ba_s_3_t&th=1 __________________ DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer Build Thread https://www.camaro5.com/forums/showthread.php?t=609817 Last edited by morepowerjoe; 03-21-2024 at 04:11 AM.