Could anyone please verify the numbers below: -
The independent front suspension and leaf-sprung rear counterpart were automatically upgraded when the K-code 289 was specified. Affected components included the front and rear spring rates, which were increased from 89 to 101 lb./in. (front) and from 101 to 130 lb./in. (rear) respectively. Along with heavier shock absorbers, the front anti-roll bar was increased from .69" to .84" in diameter, while the steering ratio was reduced from 22:1 to 16:1.
Thank you for any help you may provide,
The Coupes and fastbacks used the same front springs and there were 2 versions for '65 that were used in the Special Handling Package which was included with GTs and K Codes. It also could be ordered separately on all V8 models. The C5ZZ-5310-E spring was rated at 1491 pounds and was identified by a brown stripe. These were used with power steering and W/ and W/O A/C or manual transmission with A/C. The C5ZZ-5310-F spring was rated at 1413 pounds with a red stripe and were used with manual steering and no A/C.
There were 2 sets of rear leaf springs used. The coupes used 1 style, while the fastbacks and convertibles used the other as they were heavier in the rear than coupes. The fast back and convertible used C5ZZ-5560-E rated at 650 pounds load rate, while the coupes used C5ZZ-5560-F rated at 610 pounds load rate.