Question: what are mopar w2 heads?
Answer: Show Product Info. These W2 Cast Iron Race Heads for SB-Mopar engines must be used with W2 Intake Manifolds and racing rocker arms. Because the exhaust port shape and bolt pattern vary from stock, W2-style headers are also required. Raised oval intake ports. Machined for 2.02" Intake/1.60" Exhaust valves.