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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 performance, bracket racing, heads up<br />
and super classes. Over 7,500 RPM, 540+ cubic<br />
inches, a great head for maximum effort comp or<br />
bracket cars.<br />
The PRO1 24° 355cc CNC heads are for<br />
uncompromising performance and racing<br />
applications which favor high RPM power<br />
over low end flexibility. Best for big cubic<br />
inch, high RPM use.<br />
Every intake port, exhaust runner, valve<br />
bowl, and every combustion chamber is<br />
100% CNC machined on special dedicated<br />
PRO1 castings. Our 5-axis, computer<br />
controlled machining centers produce<br />
compound curves and complex shapes<br />
that no human could duplicate with a hand<br />
grinder.<br />
Assemblies include Stainless Steel valves,<br />
premium springs, locks, retainers, guide<br />
plates and seals.<br />
Heads are sold individually.<br />
24°<br />
355cc<br />
CNC<br />
DART MARINE PRO1 CYLINDER HEADS<br />
Features an exclusive Teflon© surface finish to<br />
inhibit corrosion and extend the life of the head.<br />
Fitted with Inconel exhaust valves to withstand<br />
the extended running time and temperatures<br />
typical of marine usage.<br />
PRO1 24° 355cc CNC - ALUMINUM<br />
PART NO. CONFIGURATION FOR USE MAX. LIFT<br />
19574030 Bare Head<br />
19574136 1.625” Dual Springs for Solid Roller .850”<br />
19574139 1.650” Triple Springs for Solid Roller Cam .900”<br />
PRO1 24° 355cc CNC - ALUMINUM (Marine Heads)<br />
PART NO. CONFIGURATION FOR USE MAX. LIFT<br />
19574030M Bare Head<br />
19574136M 1.625” Dual Springs for Solid Roller .850”<br />
BIG BLOCK CHEVY<br />
CAST ALUMINUM CYLINDER HEADS<br />
Head parts kit - see page 118.<br />
Uses +.250” long intake valves.<br />
RECOMMENDED MANIFOLDS<br />
FOR 9.800” DECK BLOCKS<br />
41114000 Single Plane 4150<br />
41124000 Single Plane 4500<br />
FOR 10.200” DECK BLOCKS<br />
41115000 Single Plane 4150<br />
41125000 Single Plane 4500<br />
PRO1 24° 355cc CNC SPECS<br />
Material:<br />
RMR Cast<br />
Aluminum Alloy<br />
Valve Angle: 24°<br />
Intake Port Volume: 355cc CNC<br />
Intake Valve: 2.300”<br />
Exhaust Valve: 1.880”<br />
Chamber Volume: 121cc<br />
Intake Port Shape: Rectangle<br />
Exhaust Port Location: .300” raised<br />
FLOW DATA @ 28” WATER<br />
LIFT INTAKE EXHAUST<br />
.200” 177 136<br />
.300” 251 178<br />
.400” 310 235<br />
.500” 360 265<br />
.600” 399 282<br />
.700” 402 296<br />
.800” 426 303<br />
Not intended for sale or use with pollution controlled vehicles.<br />
82<br />
248.362.1188 / DARTHEADS.COM Connect with us socially, search: DART MACHINERY
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