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CHAMPIONSHIP ENGINE COMPONENTS<br />
MADE IN THE USA<br />
SHORT BLOCKS TOP KITS BLOCKS HEADS MANIFOLDS CRANKSHAFT ACCESS SBC LS BBC SBF HON COATINGS BILLET<br />
<strong>Dart</strong> PRO1 23° 200cc Platinum series heads<br />
offer increased air flow at high valve lift for<br />
large displacement engines. Long wearing<br />
Bronze valve guides, screw-in studs,<br />
multi-angle intake seats with hardened,<br />
radiused exhaust seats are standard. Best<br />
of all, our precision cast ports produce outstanding<br />
airflow without time consuming<br />
porting.<br />
Assemblies include Stainless Steel valves,<br />
premium springs, locks, retainers, studs,<br />
guide plates and seals.<br />
Heads are sold individually.<br />
23°<br />
200cc<br />
QUICK INFO >>><br />
Street performance, restricted oval track, and<br />
marine performance upgrade. Mid-range to 6,500<br />
RPM. Best for 383-434 cubic inch engines.<br />
PRO1 23° 200cc - ALUMINUM (Straight Plug Heads)<br />
64cc COMBUSTION CHAMBERS<br />
PART NO. CONFIGURATION FOR USE MAX. LIFT<br />
11320010P Bare Head<br />
11321111P 1.250” Single Springs for Hydraulic Flat Tappet Cam .510”<br />
11321112P 1.437” Dual Springs for Hydraulic Roller or Solid Flat Tappet Cam .620”<br />
11321113P 1.550” Dual Springs for Solid Roller Cam .700”<br />
72cc COMBUSTION CHAMBERS<br />
PART NO. CONFIGURATION FOR USE MAX. LIFT<br />
11420010P Bare Head<br />
11421111P 1.250” Single Springs for Hydraulic Flat Tappet Cam .510”<br />
11421112P 1.437” Dual Springs for Hydraulic Roller or Solid Flat Tappet Cam .620”<br />
11421113P 1.550” Dual Springs for Solid Roller Cam .700”<br />
PRO1 23° 200cc - ALUMINUM (Angle Plug Heads)<br />
64cc COMBUSTION CHAMBERS<br />
PART NO. CONFIGURATION FOR USE MAX. LIFT<br />
11310010P Bare Head<br />
11311111P 1.250” Single Springs for Hydraulic Flat Tappet Cam .510”<br />
11311112P 1.437” Dual Springs for Hydraulic Roller or Solid Flat Tappet Cam .620”<br />
11311113P 1.550” Dual Springs for Solid Roller Cam .700”<br />
72cc COMBUSTION CHAMBERS<br />
PART NO. CONFIGURATION FOR USE MAX. LIFT<br />
11410010P Bare Head<br />
11411111P 1.250” Single Springs for Hydraulic Flat Tappet Cam .510”<br />
11411112P 1.437” Dual Springs for Hydraulic Roller or Solid Flat Tappet Cam .620”<br />
11411113P 1.550” Dual Springs for Solid Roller Cam .700”<br />
SMALL BLOCK CHEVY<br />
CAST ALUMINUM CYLINDER HEADS<br />
Head parts kit - see page 118.<br />
Uses 3/8” screw-in rocker studs.<br />
7/16” upgrade available.<br />
Assemblies with 1.550” valve spring<br />
use +.100” long valves.<br />
RECOMMENDED MANIFOLDS<br />
42811000 SHP Dual Plane<br />
42411000 Single Plane<br />
PRO1 23° 200cc SPECS<br />
Material:<br />
RMR Cast<br />
Aluminum Alloy<br />
Valve Angle: 23° (stock)<br />
Intake Port Volume: 200cc<br />
Intake Valve: 2.020”<br />
Exhaust Valve: 1.600”<br />
Chamber Volume: 64 or 72cc<br />
Plug Types:<br />
Straight or angle<br />
FLOW DATA @ 28” WATER<br />
LIFT INTAKE EXHAUST<br />
.200” 139 117<br />
.300” 191 154<br />
.400” 235 179<br />
.500” 266 195<br />
.600” 274 205<br />
Not intended for sale or use with pollution controlled vehicles.<br />
34<br />
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