Head selection is a critical element of any engine build. Aluminum is a much better conductor of heat than iron. Switching from iron to aluminum heads typically allows an additional point of compression. That by itself is a big deal. Once past that decision, it comes down to which of the many options offers the best combination of performance and cost.
Dart’s SHP (Special High Performance) 23 degree, 200cc cylinder heads provide an affordable option for larger displacement street performance engines. The SHP is designed to work with most off the shelf components. These heads are intended for street performance, restricted oval track, and marine performance upgrade and work best mid-range to 6,500 RPM. They are intended for use with 383-434 cubic inch engines.
The SHP head’s precision cast ports are designed to offer excellent flow and power without the need for CNC porting. Optimized chambers increase combustion efficiency, multi-angle intake seats and radiused exhaust seats dramatically increase performance. Manganese Bronze valve guides increase the life of the head.
A set of these heads (64cc chamber size, fully assembled) topped off the 383 stroker in the photo. This pump-gas, hydraulic-roller, street cruiser put out over 500 hp on our dyno with no porting or special work. Pretty much out of the box. That's big performance at a really solid price!
These heads are available bare or fully assembled with either a 64cc or 72cc combustion chamber (see specs below).
Call us at 815-725-2727 with any questions or just click through the "Buy It Now" link to place your order.