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I then set the Edelbrock Performer Air-Gap (PN 7501) intake manifold on the motor and torque the ARP intake bolts to 24 ft-lb. I used the Edelbrock Air-Gap manifold because air will pass between the motor and the intake, lowering the intake temp. Another benefit of the air gap is that the intake will run cooler due to the oil from the lifter valley area not heating the underside of the intake. The longer-than-stock intake runners should also help in producing more power throughout the powerband.