Silver Cloud I Long Wheelbase Chassis Info
The chassis number for these models is an initial letter to determine the series from A to C. The second and third letters L & C determine the model as a long wheelbase. It ends with a number from 1 to 51.
The chassis number can be found on a plate attached to the engine compartment bulkhead.
| Release Date | Chassis Number | Modification Detail | introduced at Chassis: |
| November 1957 - June 1968 | ALC1 to ALC26 | Improved type door seals | ALC15 |
| Stronger rear shock damper link bushes | ALC19 | ||
| February 1958 - January 1959 | BLC1 to BLC51 | Modified rear silencer mounting to prevent burning mounting rubber | BLC1 |
| Improved propeller shaft centring button and seal | BLC1 | ||
| Deletion of idler lever lubrication pipe | BLC1 | ||
| Intermediate heater and de-mister controls | BLC1 | ||
| Wire type clips on propeller shaft grease seal | BLC5 | ||
| Twin jet centrally mounted windscreen washer | BLC11 | ||
| Final type modified stub axles | BLC11 | ||
| Modified rear brake expander wedges | BLC18 | ||
| Grease lubricated track rods | BLC18 | ||
| Grease lubricated centre steering | BLC28 | ||
| Strengthened front hubs | BLC38 | ||
| C.48 dynamo | BLC39 | ||
| Modified radiator heater and de-mister connections | BLC38 | ||
| December 1958 - July 1959 | CLC1 to CLC47 | Modified door handles with button sealing | CLC8 |
| Extended neck on propeller shaft seal | CLC26 | ||
| Deletion of check valve in brake fluid supply pipes | CLC31 |
