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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 />
QUICK INFO >>><br />
Maximum competition. High torque, high compression<br />
- low dome. 8,000+ RPM, 500+ cubic inches.<br />
Race Series big block 18° oval port heads<br />
bridge the gap between conventional heads<br />
and <strong>Dart</strong>’s Big Chief heads.<br />
Utilizing Pro Stock style oval intake ports<br />
with 330cc or 383cc runners in a conventional<br />
asymmetrical port design, and featuring<br />
an 18° rolled valve angle with redesigned<br />
shallow combustion chambers, this<br />
design is ideal for drag racing, marine applications<br />
and dirt modified classes permitting<br />
big blocks.<br />
Heads are sold individually.<br />
RACE SERIES 18° 330cc - ALUMINUM<br />
PART NO. CONFIGURATION CNC PORTING PORT VOL. VALVES SPRINGS CYL. BORE.<br />
16876040 Bare Head Full Port 330cc 2.250"/1.840" 4.500"<br />
16876146 Assembly Full Port 330cc 2.250"/1.840" 1.625"D 4.500"<br />
16877040 Bare Head Full Port 330cc 2.250"/1.840" 4.600"<br />
16877146 Assembly Full Port 330cc 2.250"/1.840" 1.625"D 4.600"<br />
RACE SERIES 18° 383cc - ALUMINUM<br />
18°<br />
330/383cc<br />
Head part kits - see pages 118.<br />
Uses +.350” long intake valves.<br />
Must use shaft mount rockers.<br />
Requires special pistons.<br />
PART NO. CONFIGURATION CNC PORTING PORT VOL. VALVES SPRINGS CYL BORE.<br />
16874050 Bare Head Full Port 383cc 2.350"/1.840" 4.500"<br />
16874156 Assembly Full Port 383cc 2.350"/1.840" 1.625"D 4.500"<br />
16875050 Bare Head Full Port 383cc 2.350"/1.840" 4.600"<br />
16875156 Assembly Full Port 383cc 2.350"/1.840" 1.625"D 4.600"<br />
BIG BLOCK CHEVY<br />
CAST ALUMINUM CYLINDER HEADS<br />
<strong>Dart</strong> Aluminum valve covers feature machined gasket<br />
surfaces to prevent messy oil leaks. Our new inverted<br />
flange valve covers provide extra room for long ratio<br />
rockers and oversized springs. See page 96.<br />
RECOMMENDED MANIFOLDS<br />
FOR 9.800” DECK BLOCKS<br />
41214100 Single Plane 4150<br />
41214100 Single Plane 4500<br />
FOR 10.200” DECK BLOCKS*<br />
41215100 Single Plane 4150<br />
41215100 Single Plane 4500<br />
*Requires spacer plate kit.<br />
62210007 330cc Intake Ports<br />
62210009 383cc Intake Ports<br />
RACE SERIES 18° 330/383cc SPECS<br />
Material:<br />
RMR Cast<br />
Aluminum Alloy<br />
Valve Angle: 18°<br />
Intake Port Volume: 330/383cc<br />
Intake Valve: 2.250”/2.350”<br />
Exhaust Valve: 1.840”<br />
Chamber Volume: 102cc<br />
Intake Port Shape: Oval<br />
Exhaust Port Location: .400” raised<br />
330cc FLOW DATA @ 28” WATER<br />
LIFT INTAKE EXHAUST<br />
.200” 190 120<br />
.300” 254 164<br />
.400” 318 191<br />
.500” 377 222<br />
.600” 404 257<br />
.700” 412 276<br />
.800” 413 301<br />
383cc FLOW DATA @ 28” WATER<br />
LIFT INTAKE EXHAUST<br />
.200” 162 136<br />
.300” 236 177<br />
.400” 314 216<br />
.500” 376 254<br />
.600” 420 289<br />
.700” 444 316<br />
.800” 450 330<br />
Not intended for sale or use with pollution controlled vehicles.<br />
88<br />
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