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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 />
Designed for high performance and heavy duty<br />
applications, the Sportsman block is ideal for drag<br />
racers, circle track competitors, off-roaders, and<br />
high performance marine enthusiasts.<br />
Dart’s Iron Eagle Sportsman block is the affordable<br />
alternative for Sportsman racers and serious<br />
street performance.<br />
The Sportsman block shares most of the Iron<br />
Eagle’s best features, but saves you money. Dart<br />
blocks are cast from premium high strength Iron<br />
with extra thick cylinder walls and decks. Main<br />
bearing caps are 4-bolt on the center three and<br />
2-bolt on the ends to simplify oil pan fitment.<br />
FEATURES<br />
SPORTSMAN - IRON<br />
SMALL BLOCK FORD<br />
CAST IRON ENGINE BLOCKS<br />
• Siamesed cylinders: Standard 4.000” or 4.125” cylinders can be safely<br />
bored to 4.185” diameter, extra thick walls prevent cracking and produce<br />
excellent ring seal.<br />
• Extended cylinder barrels for improved piston support.<br />
• Steel 4-bolt main bearing caps are standard. Three center caps have<br />
splayed outer bolts for maximum strength; rear cap uses standard one<br />
piece seal. Sportsman blocks use 4-bolt centers and 2-bolt end caps.<br />
• Upgraded oiling system has been completely redesigned with a low<br />
restriction priority main oiling system with rear external oil pump feed.<br />
• Scalloped water jackets increase coolant flow around cylinder barrels to<br />
prevent detonation, extend engine life and produce consistent cylinder<br />
temperatures.<br />
• Stock components make Dart blocks a direct replacement for most<br />
production small blocks. Provisions for stock motor mounts, accessory<br />
drives, smog pumps, starter brackets, oil pans and pumps.<br />
• Reinforced head bolt bosses are blind to prevent leaks and produce more<br />
accurate torque readings. Extra thick decks prevent head gasket leaks.<br />
• Standard camshaft and camshaft drive can be used. Lifter valley of the<br />
Sportsman block has bosses for production hydraulic roller lifters.<br />
• Parts kit sold separately (PN 32000003 - see page 118).<br />
PART NO. DESCRIPTION CAPS MAIN SIZE DECK BORE<br />
31354175 302 Sportsman Steel 302 8.200" 4.000"<br />
31354275 302 Sportsman Steel 302 8.200" 4.125"<br />
31355135 351 Sportsman Steel 351C 9.500" 4.000"<br />
31355235 351 Sportsman Steel 351C 9.500" 4.125"<br />
SPORTSMAN SPECS<br />
Material: High Nickel 220<br />
BHN Cast Iron<br />
Deck Height: 8.200” or 9.500”<br />
Cylinder Bores: 4.000” or 4.125”<br />
4.185” (max)<br />
Main Bearings: 302 or 351C<br />
Main Caps:<br />
Steel<br />
4-bolt #2,3 & 4<br />
2-bolt #1 & 5<br />
Lifter Provision: OE roller<br />
or aftermarket<br />
Restrictor Provision: None<br />
Freeze Plugs: Press fit<br />
Weight:<br />
178-210 lbs.<br />
Not intended for sale or use with pollution controlled vehicles.<br />
100<br />
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