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Iron Eagle 4.500BS

Iron Eagle SBC 4.500″ BS

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Description

Advanced engine builders, maximum competition, unlimited late model, off-road truck. Spread bore space requires special 4.500″ cylinder heads and components.

This block features cylinder bores which have been spread to 4.500” from the standard 4.400” center to center dimension. This allows larger bore diameters while maintaining adequate cylinder wall thickness and gasket sealing surface between bores.

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• 4.500” bore spacing allows bore sizes up to 4.250”.

• Deck heights of 9.025” up to 9.325” versions allow greater versatility for preferred rod ratio and angle.

• Raised camshaft .391” (4.912” camshaft-to-crankshaft centerlines) 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.

• 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 an external pump.

• Parts kit included (PN 32000011).

31521312 – 4.500” Bore Space +.391” BBC Steel 350 9.025 4.180

31521313 – 4.500” Bore Space +.391” 50mm Steel 350 9.025 4.180

31521342 – 4.500” Bore Space +.391” BBC Steel 350 9.075 4.180

31521322 – 4.500” Bore Space +.391” BBC Steel 350 9.325 4.180

31522312 – 4.500” Bore Space +.391” BBC Steel 400 9.025 4.180

31522313 – 4.500” Bore Space +.391” 50mm Steel 400 9.025 4.180

31522342 – 4.500” Bore Space +.391” BBC Steel 400 9.075 4.180

31522322 – 4.500” Bore Space +.391” BBC Steel 400 9.325 4.180

31522323 – 4.500” Bore Space +.391” 50mm Steel 400 9.325 4.180

Iron Eagle SBC Block Information Packet – B04

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