Description
Unleash serious horsepower with Dart’s Pro 1 CNC-ported aluminum cylinder head, part #11971143P. Engineered for high-compression or boosted small-block Chevy builds, each head is 100 % CNC-machined for consistent flow and maximum efficiency. Key features include:
-
Large 227 cc intake runners & 66 cc CNC chambers for outstanding air-flow on 327-400 cid SBC engines
-
Assembled and ready to run with 2.080″/1.600″ stainless valves, 1.550″ dual springs, 7° retainers & machined locks
-
Angle-plug design improves spark-access and header clearance for street/strip or bracket racing
-
Lightweight A356-T6 aluminum casting (≈ 26 lb each) cuts front-end weight and dissipates heat faster than iron
-
Stock valve angle & standard accessory bolt pattern—drop-in fit with off-the-shelf pistons, rockers and intake manifolds
-
Compatible with unleaded fuels thanks to hardened exhaust seats & manganese-bronze guides for long life
- Price is for 1 cylinder head
Whether you’re chasing ETs at the drag strip or building a stout street bruiser, Dart Pro 1 heads deliver the flow you need to support 600-plus horsepower with rock-solid reliability and room to grow. Order today—Virtual Speed Performance ships fast and backs every sale with real racer tech support.
Explore more from our collection.
Reviews
There are no reviews yet.