SKU: SKU: EDE54903U-904
Engineers at RHS® have designed a high-performance aluminum engine block for GM LS applications to meet the needs of race and street performance engine builders alike. To go beyond the limitations of other existing LS blocks, the new RHS® LS Race Block is available in both standard deck and tall deck height configurations. Additionally, this innovative aluminum block features a raised cam centerline and outboard priority main oiling to allow rod clearance for a 4.600” stroke and to minimize windage in the crankcase. And for quality control assurance, RHS® conducts a CT scan (similar to a medical CAT scan) on each block to ensure maximum casting precision and consistency. When you combine unmatched finishing quality with added clearance for increased stroke applications, precision computer aided design and extra surface material to allow custom machining, you get the new benchmark for LS horsepower, torque and durability.
RHS LS Block, Standard 9.240" Deck, .904 Lifter, 55mm Roller Cam Bearing (Machined Only) - Hone to 4.120"
| Prop 65 Y/N | Y |
| Prop 65 - Long Label | WARNING: This product can expose you to Lead, Nickel, Chromium and other chemicals known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov. |
| Manufacturer | RHS |
| 6618 | 8 |
| 4089 | 6 |
| 10 | Aluminum |
| 6621 | 9.240 IN |
| 3390 | Performance |
| 4098 | 4.125 IN |
| Cam Housing Bore Diameter | 55mm roller bearing or 60 mm babbit |
| Lifter Bore Diameter | 0.904 IN |
| Required Products | 549401-SET or 549402-SET or 549403-SET or 549404-SET and 5496 or 5497 |
| Related Products | 70361251-8 70362501-8 70363001-8 70364001-8 70340001LUN 70840001LUN |