Subscribe to a magazine


Back to article View Gallery
6 of 8
The Vortec heads feature standard exhaust ports, so unlike fancy D-port heads, any small-block Chevy exhaust manifold or header will work. The intake ports are raised, having a taller ceiling for improved flow and higher velocity. The Vortecs use self-aligning rocker arms, so you can't reuse your old ones unless you have the heads machined for screw-in studs and run pushrod guide plates. Since the Vortec's pressed-in studs don't tend to pull out at higher lifts like those of earlier heads, converting to the screw-in studs so you can run standard rockers is financially a wash unless you've already got expensive roller rockers.