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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 />
Serious street performance, mild bracket racing,<br />
and marine. Over 7,000 RPM, 525+ cubic inches. Can<br />
be used on smaller engines with a tight converter.<br />
The PRO1 24° 325cc delivers increased<br />
airflow at high valve lift for high RPM, big<br />
cubic inch engines, and still remains compatible<br />
with off the shelf pistons, valve<br />
train components, and intake manifolds.<br />
Long wearing Bronze valve guides,<br />
screw-in studs, multi-angle intake seats<br />
with hardened, radiused exhaust seats<br />
are standard. Best of all, our precision<br />
cast ports produce outstanding airflow<br />
without time consuming porting.<br />
Assemblies include Stainless Steel valves,<br />
premium springs, locks, retainers, guide<br />
plates and seals.<br />
Heads are sold individually.<br />
24°<br />
325cc<br />
PRO1 24° 325cc - ALUMINUM (w/ 2.250” Intake Valve)<br />
PART NO. CONFIGURATION FOR USE MAX. LIFT<br />
19200010 Bare Head<br />
19200111 1.550” Single Springs for Hydraulic Flat Tappet Cam .660”<br />
19200112 1.550” Dual Springs for Solid Roller .700”<br />
19200116 1.625” Dual Springs for Solid Roller Cam .850”<br />
PRO1 24° 325cc - ALUMINUM (w/ 2.300” Intake Valve)<br />
PART NO. CONFIGURATION FOR USE MAX. LIFT<br />
19200030 Bare Head<br />
19200132 1.550” Dual Springs for Solid Roller .700”<br />
19200136 1.625” Dual Springs for Solid Roller Cam .850”<br />
PRO1 24° 325cc - ALUMINUM (Marine Heads w/ 2.250” Intake Valve)<br />
PART NO. CONFIGURATION FOR USE MAX. LIFT<br />
19200010M Bare Head<br />
19200112M 1.550” Dual Springs for Hydraulic Roller Cam .660”<br />
PRO1 24° 325cc - ALUMINUM (Marine Heads w/ 2.300” Intake Valve)<br />
PART NO. CONFIGURATION FOR USE MAX. LIFT<br />
19200030M Bare Head<br />
19200132M 1.550” Dual Springs for Hydraulic Roller Cam .660”<br />
BIG BLOCK CHEVY<br />
CAST ALUMINUM CYLINDER HEADS<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 />
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° 325cc SPECS<br />
Material:<br />
RMR Cast<br />
Aluminum Alloy<br />
Valve Angle: 24°<br />
Intake Port Volume: 325cc<br />
Intake Valve: 2.250”/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” 166 127<br />
.300” 245 170<br />
.400” 297 211<br />
.500” 330 244<br />
.600” 355 267<br />
.700” 370 282<br />
.800” 377 294<br />
Not intended for sale or use with pollution controlled vehicles.<br />
78<br />
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