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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. 8000+ RPM, 500+ cubic inches.<br />
<strong>Dart</strong> developed the first successful aftermarket<br />
aluminum heads for the big block Chevy engine<br />
platform and we’ve done it again! We have<br />
continued to refine our revolutionary designs<br />
through our in house research and development<br />
program and now offer the latest of our<br />
advancements in the PRO1 20° 440cc Aluminum<br />
cylinder heads.<br />
The <strong>Dart</strong> PRO1 20° heads deliver superior performance,<br />
by utilizing 440cc runners in a raised<br />
asymmetrical port design, and feature a 20°<br />
rolled valve angle with redesigned shallow combustion<br />
chambers. These heads are ideal for<br />
maximum effort naturally aspirated, big boost<br />
forced induction, or nitrous applications.<br />
Designed to use conventional BBC<br />
intake manifolds.<br />
Requires use of shaft mounted rockers.<br />
Requires special pistons.<br />
Heads are sold individually.<br />
PRO1 20° 440cc - ALUMINUM<br />
20°<br />
440cc<br />
PART NO. CONFIGURATION MAX. LIFT<br />
19705090 Bare head<br />
19705196 1.625” Solid Roller Cam .850”<br />
19705199 1.650” Triple Springs for Solid Roller Cam .900”<br />
BIG BLOCK CHEVY<br />
CAST ALUMINUM CYLINDER HEADS<br />
Head part kits - see pages 118.<br />
RECOMMENDED MANIFOLDS<br />
FOR 9.800” DECK BLOCKS<br />
62220010 End Rail Spacers *REQUIRED<br />
41114000 Single Plane 4150<br />
41124000 Single Plane 4500<br />
FOR 10.200” DECK BLOCKS<br />
62220011 End Rail Spacers *REQUIRED<br />
41115000 Single Plane 4150<br />
41125000 Single Plane 4500<br />
PRO1 20° 440cc SPECS<br />
Material:<br />
RMR Cast<br />
Aluminum Alloy<br />
Valve Angle: 20°<br />
Intake Port Volume: 440cc and CNC<br />
Intake Valve: 2.400”<br />
Exhaust Valve: 1.800"<br />
CNC Chamber Volume: 97cc<br />
Intake Port Shape: Rectangle<br />
Exhaust Port Location: .500” raised<br />
FLOW DATA @ 28” WATER<br />
LIFT INTAKE EXHAUST<br />
.200” 156 133<br />
.300” 242 181<br />
.400” 321 224<br />
.500” 388 257<br />
.600” 425 284<br />
.700” 448 306<br />
.800” 452 321<br />
.900” 460 326<br />
1.000” 467 333<br />
Not intended for sale or use with pollution controlled vehicles.<br />
84<br />
248.362.1188 / DARTHEADS.COM Connect with us socially, search: DART MACHINERY
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