Another MOOG front spring question - 68 Cutlass Holiday Sedan 4dr
#1
Another MOOG front spring question - 68 Cutlass Holiday Sedan 4dr
Any of you know the stock spring rate for a 68 Cutlass Supreme 4dr Holiday Sedan w/AC? Need to replace front coil springs and debating between Moogs recommended 5374 vs 5450. Looking for tighter handling and something to balance my rear air shocks.
5374 - Spring size: Inside Diameter 4.090", Bar Diameter 0.671", Installed Height 12" Load: 1886lbs Spring Rate: 317lbs
5450 - Inside Diameter 3.62", Bar Diameter .69", Installed Height 11.5", Load: 1642lbs, Spring Rate: 450lbs
Is 317lbs a bit too soft? Thanks!
5374 - Spring size: Inside Diameter 4.090", Bar Diameter 0.671", Installed Height 12" Load: 1886lbs Spring Rate: 317lbs
5450 - Inside Diameter 3.62", Bar Diameter .69", Installed Height 11.5", Load: 1642lbs, Spring Rate: 450lbs
Is 317lbs a bit too soft? Thanks!
#2
Hey Buddy: I have not been able to find the spring specs for all the differnet options that were offered, but the AMA Specs for this base model (34269 I believe - you may want to confirm that) call for a SAE 6290, 11.3 in ride height, 3.60 ID, .588 diam length 127.0. spring rate of 280. The factory AC is going to add another 122lbs.
#3
What engine do you have? 280lb without AC or 310lb with AC are pretty close factory values with a 350 engine. A 455 would be 310 and 335 respectively.
These are all standard-ride springs, which gave a very smooth ride.
FE2 springs were 435lb and were offered for handling performance on the 2 door models. Moog's 5450 is the FE2 replacement and will give better handling but less smoothness. I have them on Lady and the ride is still not harsh and choppy. I think you will be happy with those.
These are all standard-ride springs, which gave a very smooth ride.
FE2 springs were 435lb and were offered for handling performance on the 2 door models. Moog's 5450 is the FE2 replacement and will give better handling but less smoothness. I have them on Lady and the ride is still not harsh and choppy. I think you will be happy with those.
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