SBC 230cc Pro-1 Head 64cc A/P 2.08/1.60 Assm.

The SBC 230cc Pro-1 Head 64cc A/P 2.08/1.60 Assembly from DART is purpose-built for small-block Chevrolet enthusiasts seeking maximum flow capability without sacrificing reliability or ease of installation. These assembled cylinder heads represent a proven solution for street performance, mild turbocharged applications, and naturally aspirated builds where breathing efficiency directly translates to horsepower gains. Whether you're rebuilding a vintage 350 or optimizing a LS-adjacent platform, this head assembly eliminates the guesswork of selecting compatible valve sizes and chamber volumes.

The 230cc intake port volume unlocks superior flow characteristics across the RPM band, delivering measurable improvements in volumetric efficiency compared to factory castings. The 64cc combustion chamber is optimized for compression ratios between 9.5:1 and 11:1 depending on piston selection, balancing detonation resistance with power output. Valve sizes of 2.08 inches (intake) and 1.60 inches (exhaust) provide the ideal compromise for SBC applications, maximizing scavenging and fuel charge velocity while maintaining valve seat durability and long service intervals. DART's quality casting and assembly ensures consistent port matching and proper valve seat angles, eliminating the labor-intensive porting work that many builders would otherwise perform.

This head assembly suits builders planning 350–400 hp naturally aspirated builds or entry-level forced induction platforms where cost-effective flow takes priority over exotic materials or extreme porting. Direct bolt-on installation to standard SBC blocks (262–454 displacements) requires only gasket sets, bolts, and basic machine work verification. Pre-assembled construction saves 15–20 hours of valve lapping and seat work compared to bare castings, accelerating project timelines without compromising performance integrity or long-term reliability in street or weekend track duty.