Sean Hyland Motorsport are proud to announce the release of the 5.4 and 4.6 aluminum motorsport engine block. These blocks have taken a year to design, and incorporate features designed to provide durability and increased performance.
The 5.4 block can be ordered with a bore size of up to 3.75", which results in a 6 liter all aluminum engine for your Lightning, Mustang or rod project. The aluminum motorsport blocks benefit from many design features listed below. Order yours today for early 2004 delivery.

Sean Hyland 4.6/5.4 Motorsport Blocks

356T-7 aluminum alloy

lightweight, only 95lbs for the 5.4, 88lbs for the 4.6

smooth, deep skirt construction

billet steel main caps, main studs supplied, optional aluminum main caps

13mm thick deck

External oil drain backs reduce windage losses

cast iron sleeve, 3.55-3.75 bore

Block designed for semi-stressed mid engine applications

2500 hp capable