- Engines & Components
- Engine Blocks
- Dart Iron Eagle PRO Small Block Ford Engine Blocks
A true race block that is modified
to accommodate 21st century power levels
for most nitrous, blower or turbo applications.
The new superior strength 220 BHN cast iron Dart Iron Eagle PRO is the perfect high performance upgrade for your factory small block. Working with leading Ford racers and engine builders, they designed the Iron Eagle Race Series and Sportsman small blocks to solve the shortcomings of production engine blocks used in high performance and competition applications. Dart blocks for Fords are produced on dedicated tooling and machined on state-of-the-art CNC equipment. They added the features that Ford racers need to build powerful and reliable engines. Staring with the small block Ford's big achilles heel, the oiling system!
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With Dart's vastly improved oiling system, the need to "band-aid" the oiling system with a high volume oil pump is a thing of the past. Using a standard oil pump and today's lifters, without restrictors, makes engine assembly easier and eliminates the guess work of determining restrictor size. Factory stock engine blocks were designed to be mass-produced economically and to operate in a passenger car environment. Original equipment oiling systems are typically restrictive and feed oil to the top of the engine first. The common practice has been to use a high-volume oil pump to offset these shortcomings and help the main bearings get more oil to survive. Dart aftermarket blocks have been designed with a less restrictive oil system which feeds oil to the main bearings first; a "priority main" oiling system. Many of us in this industry are inclined to use a high-volume oil pump due to history. However, this causes excessive oil to the top of the engine. Restrictors are then used in the lifter galleys to reduce the amount of oil to the top. Modern lifter designs typically have small oiling orifices which restrict the oil reaching the top of the engine. Using a standard -volume oil pump with current lifter designs and the Dart priority-main oiling system eliminates the need for restrictors, simplifying engine assembly and taking the guess work out of oiling system design.
Features:
- Siamesed Cylinders: Standard 4.000" or 4.125" cylinders can be safely bored to 4.185" diameter. Extra-thick walls prevent cracking and produce excellent ring seal.
- Scalloped Water Jackets: Increase coolant flow around cylinder barrels to prevent detonation, extend engine life and produce consistent cylinder temperatures.
- Steel Four-Bolt Main Bearing Caps: Upgraded main bolts to main studs, rear cap uses standard 1-piece seal.
- Upgraded Oiling System: Has a complete stock-type system plus a low-tension priority main oiling system with front and rear external oil pump feeds.
- Dual Crossovers: Allow oil flow to be metered with restrictors for roller lifter cams and/or roller rocker arms to reduce oil flow and windage.
- Reinforced Head Bolt Bosses: Blind tapped to prevent leaks and produce accurate torque readings. Extra-thick decks prevent head gasket leaks.
- Reduced .250” main oil feed holes
- Reduced .090” cam to crank oil feed (Babbit cam)
- Removed cam to crank oil feed (Roller cam)
- Removed oil filter location
- Removed front -10AN oil feed
- Removed rear lifter cross over
- External dry sump or external wet sump only
- Removed stock oil pump mounting boss.
Ford Factory Standard Engine Dimensions:
- 302ci 1968-1996 - 4.000" Cylinder Bore; 8.206" Deck Height; 2.249" Main Journal Diameter
- 351W 1971-1996 - 4.000" Cylinder Bore; 9.503" Deck Height; 3.000" Main Journal Diameter
- 351C 1970-1974 - 4.000" Cylinder Bore; 9.206" Deck Height; 2.749" Main Journal Diameter
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Iron Eagle PRO 302
Iron Eagle PRO 302
Iron Eagle PRO 351W
Dart 31384296
Dart Small Block Ford 351W Iron Eagle PRO Engine Block 220 BHN Cast Iron 4.125 / 9.200
$4,120.77
Ships on 09/03/24
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