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QUALITY STRENGTH PERFORMANCE SINCE 1981<br />
Dart Race Series 12.5° 296cc CNC heads offer<br />
outstanding performance in a raised runner<br />
style casting. By reducing the valve angle, reshaping<br />
the raised intake ports and optimizing<br />
the combustion chambers, we produced a significant<br />
increase in both airflow and combustion<br />
efficiency.<br />
It is recommended that you contact a Dart<br />
technical representative before placing an<br />
order for this item. Detailed information about<br />
your planned engine build will help to ensure<br />
that you choose the right configuration for<br />
your motor and that any special parts and considerations<br />
are taken into account.<br />
Heads are sold individually.<br />
12.5°<br />
296cc<br />
CNC<br />
QUICK INFO >>><br />
Maximum competition, comp/modified drag racing,<br />
circle track. Over 7,000 RPM, high compression - low<br />
dome.<br />
RACE SERIES 12.5° 296cc CNC - ALUMINUM<br />
PART NO. CONFIGURATION FOR USE MAX. LIFT<br />
14400000C Bare Head - No Porting<br />
FULL PORT CNC - 2.150"/1.600" VALVES<br />
PART NO. CONFIGURATION FOR USE MAX. LIFT<br />
14472010 Bare Head<br />
14472111 1.550” Dual Springs for Solid Roller Cam .750”<br />
FULL PORT CNC - 2.180"/1.600" VALVES<br />
PART NO. CONFIGURATION FOR USE MAX. LIFT<br />
14482030 Bare Head<br />
14482131 1.550” Dual Springs for Solid Roller Cam .750”<br />
SMALL BLOCK CHEVY<br />
CAST ALUMINUM CYLINDER HEADS<br />
Head parts kit - see page 118.<br />
Requires shaft mount rockers<br />
and offset lifters.<br />
Requires special pistons.<br />
Assemblies with 1.550” valve spring<br />
use +.600” long valves.<br />
RECOMMENDED MANIFOLD<br />
42711000 Single Plane 4150<br />
RACE SERIES 12.5° 296cc CNC SPECS<br />
Material:<br />
RMR Cast<br />
Aluminum Alloy<br />
Valve Angle: 12.5°<br />
Intake Port Volume: 296cc CNC<br />
Intake Valve: 2.150”/2.180”<br />
Exhaust Valve: 1.600”<br />
Chamber Volume: 38cc w/Ti<br />
Plug Type: Angle<br />
FLOW DATA @ 28” WATER<br />
LIFT INTAKE EXHAUST<br />
.200” 157 116<br />
.300” 231 162<br />
.400” 287 206<br />
.500” 340 251<br />
.600” 367 271<br />
.700” 377 279<br />
.800” 385 281<br />
.900” 386 283<br />
SHORT BLOCKS TOP KITS BLOCKS HEADS MANIFOLDS CRANKSHAFT ACCESS SBC LS BBC SBF HON COATINGS BILLET<br />
Not intended for sale or use with pollution controlled vehicles.<br />
248.362.1188 / DARTHEADS.COM Connect with us socially, search: DART MACHINERY<br />
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