Cylinder Head Rebuild - Sleeper S10 Part 2 - More Prep For BIG POWER 

In this episode we lap the valves, remove some broken exhaust manifold bolts, and install dual valve springs to support the stage 3 turbo cam. LS cylinder heads flow really well from the factory but after a bunch of miles they definitely need some love to prepare them to make a lot more power.
In the next episode we will start building the motor to support up to 1000 hp at the wheels!
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