The Shelby Alloy 289 Block is much lighter and stronger than the factory cast iron version. The Shelby 289 block is fully CNC machined. It also will feature a casting number similar to the original 289 HIPO blocks.
Shelby 289 Aluminum Block Technical Features:
| Block Material | AA356,T6 aluminum Blocks is CNC machined |
| Deck Height | 8.2-inch |
| Deck Thickness | 0.750-inch |
| Cylinder bore range | 4.030-inch,std.,to special order 4.155-inch |
| Maximum Stroke | 3.4-inch |
| Displacements up to | 368 cubic inches |
| Cylinder sleeve | Centrifugally cast dry sleeves |
| Cylinder wall | Siamese with dry liners |
| Main bearing cap | Billet steel |
| Main bearing cap bolt configuration |
studs;4 splayed bolts on 2-3-4 mains |
| oil sump | Accommodates wet or dry sump oiling systems |
| Head stud diameter | 0.500-inch |
| Bare block weight | 90 pounds, approximately |
The Shelby 289/302 block uses a 351 Windsor oil pan, distributor, and oil pump drive shaft.