![]() ![]() ![]() 3 V6 OHV Cylinder Heads PAIR CAST# 7113 VORTEC (CORE RETURN REQUIRED) (Renewed) Brand: Amazon Renewed. Open and closed chamber cylinder heads differ in combustion chamber capacity. Let’s use a small-block Chevy as an example. A plus for the angle plug version is it also has both Vortec and old style intake manifold bolt patterns drilled and tapped for intake fit, the straight plug versions don't have the Vortec pattern. The vacuum preasure shakes between 11-14 psi and I believe it should be a steady 18. It has been pressure checked for cracks and resurfaced. PROMAXX Performance (58) Trick Flow Specialties (52) World Products (39) Edelbrock (27). PROMAXX Performance Vortec 185cc Iron Cylinder Heads 2151. Even if I put a very mild cam in that 406 engine with an LCA of 112° or higher the engine … Get the Best Performance with ProMaxx Performance Small Block Chevy Vortec Cylinder Head Kit Includes: Cast Iron Vortec 185cc Cylinder Heads 2151K parts at JEGS. This head is a screw in stud cast iron replacement for Marine applications. ” - Neil G I am running a 355ci, Vortec heads, balanced, 10 to 1 compression rpm intake, 600 cfm carb, auto tranny and a gm hei distributor. … You are right about Vortec heads out flowing them to. ![]() Even better, you can buy a head reconfigured for more lift from ScogginDickey or one of several other GMPP dealerships that have modified these heads to accept additional valve lift for under $600 for a pair of complete heads. Way back when the Ford Flathead ruled the world, hot rodders saw the benefit from adding performance cylinder heads. I run Profiler heads cast, machined, and assembled in Ohio. Choose one and use it, you cannot use two, or the three together. ![]()
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