The Shelby Alloy Windsor block is 45 percent lighter, yet stronger than the factory cast iron version. It retains original factory engine mounting bosses and bell housing bolt pattern, making it a bolt-in replacement for cast iron Windsor blocks. The Shelby 351 block is fully CNC machined.
The Shelby block offers these premium performance features:
- Expanded Water Jackets
- Also available as a solid block
- Thick 0.750-inch deck delivers the foundation needed for maximum head gasket sealing and retention.
- Accepts Canted Valve Heads
- Shelby's 351 Alloy block delivers superior bottom end stability at high rpm.
|AA356,T6 aluminum Blocks is CNC machined
|Cylinder bore range
Wet - 4.030 or 4.120
Solid - 4.120-inch
|Displacements up to
|461 cubic inches
|Centrifugally cast dry sleeves
|Siamese with dry liners
|Main bearing cap
|Main bearing cap bolt
|studs;4 splayed bolts on 2-3-4 mains
|Accommodates wet or dry sump oiling systems
|Head stud diameter
|Bare block weight
|90 pounds, approximately