Vortec heads on sbc 400. How did we do it, read the full article for details and some great tips. 030 over 400 small block. 8:1 with 64cc) New last year, 500 miles or so on it. (Image/Summit Racing) This simple illustration will help with the angle necessary to drill the steam holes. I know I will have to drill the steam holes to use these heads on the 400 motor. 94 / 1. Mar 13, 2020 · The easiest solution is the RPM Vortec manifold because it has a passage under the plenum to plumb with the heater circuit to keep things warm in the winter. (Graphic/Jeff Smith) Dec 30, 2024 · The Vortec Top End Kit includes intake and exhaust gaskets, head gaskets, a timing cover gasket set, valve cover gaskets, pushrods, a head bolt kit, manifold bolts, thread sealant, a manifold, a camshaft, a timing chain set, and heads. So steamholes must be drilled in non-400 heads. I would like to put a set of 062 vortec heads that I have but unsure what head gaskets would be best to use. zq4 lrjbmzq ja emjz mtohogf ky isw bop ike7 vaeln