Are You putting this motor in Your truck for the street? You dont want runners anywhere near that big with the 327. The Edelbrock E-TEC 170 looks like and interesting head for your combination. They have 1.94/ 1.55 valves which should work well and should give You a fair amount of torque. Big runners and big valves would absolutely kill your bottom end ( TORQUE). If You wanted to go a little bigger You might look at the BRODIX RACE RITE 180. .I would not go any larger than that. Remember, Bigger is not always better. If I had to guess I would think the E-TEC would be a better street head that would be stronger up to about 5000 RPM. At 5500 I would say the advantage would go to the RACE RITE 180.













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