Dart’s Iron Eagle Small Block Chevy Race block is available with tall deck, raised cam locations and with ports for wet/dry sump oiling systems. This is the max effort racing block that Dart has for standard bore space Small Blocks. 4.5″ Bore Space Iron Eagles are also available.
Iron Eagle small blocks are available in standard (9.025″) or tall deck (9.325″) versions so you can select the crankshaft stroke and connecting rod length that’s right for your combination.
The camshaft has been raised .391″ and oil pan rails are spread to provide extra clearance for stroker cranks. The versatile Iron Eagle block is the perfect starting point for a big cubic inch small block project.
Standard 9.025” and tall deck 9.325” versions allow greater versatility.
Raised camshaft .391” (4.912” camshaft-to-crankshaft centerlines) provides more clearance for stroker cranks and eliminates need for fragile small base circle cams. Option for .434 raised cam also available.
Relocated oil pan rails are spread .400” per side (.800” wider than stock) to increase crank/rod clearance and reduce windage losses.
Requires use of remote oil filter. No provision for block mounted filters.
Oil pan bolt holes are relocated in line with main caps to eliminate interference with rotating assembly.
Big block camshaft bearings allow the use of cams with larger base circle diameter to improve strength and reduce twisting with cam-driven pumps (small block cam tunnel available).
Dual starter mounts allow starter to be mounted on either side of block for chassis and oil pan clearance.
Front & rear external oil inlets, crossovers and restrictor provisions to simplify plumbing with external pump.
Parts kit included (PN 32000011).
NOTE: This block has a Flat Rate Fee to a Commercial / Business Location Set, if shipping to a Residential Location, Freight Costs will be higher than indicated in checkout.
31121112 – Iron Eagle +.391” BBC Steel 350 9.025 4.000
31121212 – Iron Eagle +.391” BBC Steel 350 9.025 4.125
31121222 – Iron Eagle +.391” BBC Steel 350 9.325 4.125
31122112 – Iron Eagle +.391” BBC Steel 400 9.025 4.000
31122212 – Iron Eagle +.391” BBC Steel 400 9.025 4.125
31122222 – Iron Eagle +.391” BBC Steel 400 9.325 4.125
Deck Height: 9.025″ or 9.325″
Bore Size: 4.000″ or 4.125″
Main Bearing Size: 350 (2.45) 400 (2.65)
Weight: 210 lbs
Largest Recommended Bore: 4.185
Largest Recommended Crank Stroke: 4.125
Camshaft Bearing Diameter: SBC – 2.00″, BBC – 2.120″
Camshaft Position Raised : .391 w/ optional .434″
Cylinder Wall Thickness, min. : .275″ @ 4.185″
Deck Thickness, min :.625″ (5/8)
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