| Brand: | Speedmaster |
| Part Number: | 1-286-001-01 |
| Part Type: | Engines, Bare Block |
| Cylinder Bore Diameter: | 4.000 in. |
| Bore & Stroke: | 4.185 in. x 4.000 in. Max Recommended |
| Cam Journal OD: | Standard SBC - 1.869 |
| Cam Plug: | 2.375 in. Dia. Cup Plug |
| Cylinder Wall Thickness: | 0.275 in. min @ 4.185 in. Bore |
| Deck Height: | 9.025 in. |
| Deck Thickness: | 0.675 in. Min |
| Fuel Pump : | Standard Mechanical Provision |
| Fuel Pump Pushrod: | Standard Length |
| Freeze Plugs: | 10 x 1-5/8 in. Press In Cup Plugs |
| Lifter Bores: | SBC 0.8427-0.8437 in. |
| Main Bearing Size: | 2.450 in. (SBC 350) |
| Main Bearing Bore: | 2.649 in. (SBC 350) |
| Main Cap Bolts: | #1 7/16 in. (2) 3/8 in. (2) #2, 3, 4 7/16 (2) Splayed (2) #5 7/16 in. (2) 3/8 in. (2) |
| Main Cap Press: | 0.005 in. |
| Main Caps: | All 5 Billet Steel. 3 Center Caps Splayed |
| Main Cap Register: | Deep Stepped Register (No Need for Dowels) |
| Oil System: | Wet Sump - Main Priority Oiling (Can Use Dry Sump) |
| Oil Pump Shaft: | 350 0.481 in. OD - Standard |
| Oil Filter: | SBC, Uses 2 Bolt Adapter |
| Oil Pan: | Standard 350 SBC |
| Rear Main Seal: | Standard 350 SBC |
| Serial No. Location: | Laft Front & Main Caps |
| Starter: | Standard SBC |
| Stud Holes, Head: | Blind Holes |
| Timing Chain/Gears: | Standard SBC Components |
| Timing Cover: | Standard Cam Location SBC |
| Torque Specs: | 1 - 5 7/16 in. Bolts 65 ft. lbs. 1 & 5 3/8 in. Bolts - 35 ft. lbs. |
| Weight: | 205 Lbs @ 4.0 in. Bore |
| Quantity: | Sold individually. |
| Notes: | Cam Bearings not Included, Replaces Dart 31181111 |
