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The race cam is fine for street driving, but it requires manley race valves and PAC 1518 springs because its a fast ramp up rate. I am working on a tune for a customer with this setup, and you will need the 28# injectors. Just need to sort out the spark plug range (1 step colder right now, need to try 2 steps). Raised idle to 850 RPM. A double roller timing chain is advised for longevity. 94 gm timing chain would be the other option, since it is the strongest chain that fits the stock timing cover and crank. Basically, the Race setup costs a lot more in supporting mods to keep it reliable, but it will give you the best performance.
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