Need some valve train advice
#1
Need some valve train advice
been some time since I worked on the valve train of a motor. I am adding roller rockers and guide plated to a F-Body LS1. Some questions. Will the stock valve cover bolts be long enough to use adding a 1/2 inch spacer? How much pre load on the stock lifters? I read 1/4 to 1 turn but another guy said 1.5 turns. Finding TDC. If I watch the exhaust valve close and the intake open and close, at that point, If I rotate the motor another 180 degrees, should I be at TDC? Thanks
#7
TECH Junkie
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1/2" spacer you will need longer bolts, but they should have been provided in spacer kit. i'm sure the comp rockers call for 1.5-2.0 full turns pass zero lash. that puts preload in the .080-.110 range. stock preload is around .060-.070 i think.