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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 />
Recommended for engines with 4.000” bore or larger.<br />
Maximum competition, comp/modified drag racing,<br />
circle track, and heavy duty applications.<br />
Dart's new LS based PRO1 LS 15° 280cc Aluminum<br />
rectangle port cylinder head for GM LS series<br />
small block V8 engines take performance to the<br />
next level. Offers higher performance and more<br />
versatility than factory designs.<br />
The 15° based high performance cylinder head<br />
has better airflow, more efficient combustion<br />
chambers and more user friendly features than<br />
production LS castings. The Dart PRO1 280cc<br />
cylinder head retains stock valve angles, stock<br />
valve locations and stock accessory mounting<br />
holes to make installation easy. Virtually everything<br />
else has been improved.<br />
Heads are sold individually.<br />
NEW OPTION<br />
15°<br />
280cc<br />
LS<br />
PRO1 LS 15° 280cc - ALUMINUM - LS3 COMPATIBLE (RECTANGLE PORT)<br />
PART NO. CONFIGURATION FOR USE VALVES MAX. LIFT<br />
11030050 Bare Head<br />
11030152 1.290" Beehive springs for Hydraulic roller 2.165” / 1.600” .625”<br />
11030153 1.295" Dual springs for Hydraulic roller 2.165” / 1.600” .650”<br />
GEN III - RECTANGLE PORT<br />
CAST ALUMINUM CYLINDER HEADS<br />
SMC (SUPER MOD COMPLETE)<br />
Head parts kit - see page 118.<br />
PRO1 LS 15° 280cc SPECS<br />
Material:<br />
RMR Cast<br />
Aluminum Alloy<br />
Valve angle: 15°<br />
Intake port volume: 280cc<br />
Intake valve: 2.165”<br />
Exhaust valve: 1.600”<br />
Chamber Volume: 68cc<br />
(SMC) PRO1 LS 15° 282cc SPECS<br />
Material:<br />
RMR Cast<br />
Aluminum Alloy<br />
Valve angle: 15°<br />
Intake port volume: 282cc<br />
Intake valve: 2.165”<br />
Exhaust valve: 1.600”<br />
Chamber Volume: 68cc<br />
FLOW DATA @ 28” WATER<br />
LIFT INTAKE EXHAUST<br />
.200” 163 126<br />
.300” 233 171<br />
.400” 283 204<br />
.500” 321 235<br />
.600” 343 244<br />
.700” 371 249<br />
(SMC) FLOW DATA @ 28” WATER<br />
LIFT INTAKE EXHAUST<br />
.200” 155 130<br />
.300” 222 171<br />
.400” 269 199<br />
.500” 318 228<br />
.600” 356 244<br />
.700” 376 252<br />
Not intended for sale or use with pollution controlled vehicles.<br />
60<br />
248.362.1188 / DARTHEADS.COM Connect with us socially, search: DART MACHINERY
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