DART Iron Eagle Block # 31395235 4.125 X 9.500 X Clev main FREE Ship/see details

This auction is for a completely New DART Iron Eagle Block SBF  part # 31395235 and has a 4.125 bore X 9.500 deck with a std Clev main size 2.749 This block needs to be finish honed to fit pistons and cleaned and all machine work inspected before assembling. This is also the newer version of Dart's Iron eagle block with o-ring style pipe plugs which do come with it as well.

Block Specs below:

Deck Height:  9.500″
Bore: 4.125″ unfinished
Main Bearing Size: 351 (2.749″)
Weight: 9.500″ – 195 lb
Maximum bore: 4.185″
Camshaft Journal diameter:  Standard 351
Camshaft Position: Standard 351
Cylinder wall thickness, min.: .250″ @ 4.185″ bore
Deck thickness, min.: .675″

Iron Eagle

31395235 – 351 Std. Deck Steel 351C 9.500 4.125

Dart’s Iron Eagle is a true race block which will work with most standard components. Provisions for wet or dry sump oiling systems. Great for power adders and maximum effort engines.

Dart’s Iron blocks for Ford are designed to work with stock components, but are much more than a stock replacement.

Designed from the ground up for hard core racing, all the weaknesses of the factory castings have been addressed. Dart blocks are cast from premium high strength Iron with extra thick cylinder walls and decks. The main webs are beefed up and fitted with steel 4-bolt main caps.

• NEW! 18 Bolt Deck, has the Extra 4 upper & 4 lower bolt holes in Deck (Similar to Man O’ War Blocks)
• Siamesed cylinders: Standard 4.000” or 4.125” cylinders can be safely bored to 4.185” diameter, extra thick walls prevent cracking and improve ring seal.
• 9.500” (351W) allow increased displacements up to 468 cubic inches.
• Steel 4-bolt main bearing caps are standard. Three center caps have splayed outer bolts for maximum strength.
• Main bearing diameters: 351C (2.749”) for large journal crankshaft.
• Upgraded oiling system has been completely redesigned with a low restriction priority main oiling system with rear external oil pump feed.
• Reinforced head bolt bosses are blind tapped to prevent leaks and produce accurate torque readings. Extra thick decks prevent head gasket leaks.