

Has additional vacuum tap off of runner. Recommended intake manifold gasket set 5821 or 101G. Port Size: 1.92" height, 1.16" width. Height: Front 4.19", Rear 5.27".
Exhaust Crossover for Improved Street Drivability (Standard Small Block Chevy Heads). So we have a chance to make it right - we want your repeat business! Check out the official Holley Performance.