317 or 243 heads with boost
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317 or 243 heads with boost
Let me give you some background I have an '03 Z06 with a twin turbo setup. The car has a LS6 with 243 heads. I just bought a 6.0 truck engine with the 317 heads. I plan on running high boost after I buy a set of AFR's but for now I will use one of these sets. I know the 243s have the hollow intake valves and sodium filled exhaust valves but which set is better for boost. I am only going to run about 15 psi or so. The reason I am building a motor is because I broke a ringland. I was stupid and running without methanol at 10psi on a 10.5 to 1 motor.