We tested two different Edelbrock intakes and carbs on this motor: the EPS and Air-Gap manifolds and the AVS 650 and AVS 800 carbs. Both carbs worked about the same on the dyno at wide-open throttle, but the smaller 650 would definitely work better around town with lots of stop-and-go driving. The large size of this engine craved the large-volume Air-Gap intake, so it'll stay.