The Boss 5.0 block is a 4.6L deck height, 94mm cylinder bore cast iron block. Cast in Ford's Cleveland plant, it uses a proprietary iron mix to yield the strongest possible casting strength with least porosity and greatest consistency. NOTE:The Boss 5.0L modular block does not have a finish milled head deck or cylinder bores. The engine builder will have to mill the deck and finish bore then hone each bore specifically for their combination.
Siamese 94mm Bore
17mm Main Web Minimal Thickness
4 Bolt Main With Interference Fit Nodular Iron Machined Caps
Increased Main Web Window Size For Less Oil Movement And Greater Power
Head Gaskets For 3V Applications Use M-6067-3V50
2005-2010 Mustangs require the engine mounting bracket M-6031-BOSS50
2008 NMRA EFI Renegade champion used a Boss 5.0L block
2009 NMRA EFI Renegade champion used a Boss 5.0L block
NMRA Drag Radial competitor runs a Boss 5.0 block en route to a best ET of 8.06 making over 1500hp!
Justin Burcham, of Glen Burnie Maryland, has been running a Boss 5.0l block for 2 seasons in True Street with his street legal and street driven 2006 Mustang. Et's in the mid 8's with horsepower over 1300 hp!
Land Speed Racing - Steve Benyo and and Team Saline have driven their Mustang with Boss 5.0 power to numerous records at Maxton in 2008 and hold the current World Land Speed Record in the Production Supercharged Class with a speed of 232.27mph!
Main Bolt Style
Rear Main Seal Style
Main Journal Type
Main Cap Fasteners Included
Main Bearings Included
Engine Block Weight lbs
Cylinder Bore as Shipped
Raised Cam Location
Engine Block Style
Finished Cylinder Bores
Engine Block Material
Main Caps Included
Cam Bearings Included
Main Cap Material
Freeze Plugs Included
Ships on 08/10/20
Ford Racing Engine Block
Modular 5.0L Cast Iron 94mm Siamese Bore 4-Bolt Main
Ships on 08/10/20