DRD L5 TURBO , CNC ported type1 heads, 94mm bore (Built in the USA)

DRD Cnc ported L5 TURBO, type 1 heads. New type 1 head castings are used with 12mm spark plug holes. 40mm X 37.5mm Stainless steel valves installed, Short turbo exhaust guides installed, HI rev dual springs, Heavy dusty cromolly retianers and keepers. State of the art CNC ported, intake and exhaust ports, CNC machined combustion chambers to take advantage of to days pump gas. Turbo cumbustion chamber, Approx 66CC chamber volumes. These heads are great for street and off road Turbo engines with 1700CC and up, power up to 250 hp output on large stroker engines. Designed and maufactured with the use of the latest computer design software, optomized for maxium torque output. DRD heads are better by design, offering more torque per dollar hands down. Power range from idle to approx 6500 rpms. Listed price is for a pair heads, 2 cylinder heads, 94mm bore.