I´m looking for a way to lower my Tbird.
Moog has this great list of all their springs.
Rockauto lists part # 8314 for front and 8545 for rear application.
The original Ford Specifications form says a front weight of 2495lb and rear weight of 2034lb for my vehicle.
I made a Excel Sheet with potential spring alternatives for lowering the vehicle.
The last column contains calculated installed height of the spring in the Tbird.
Calculation is based on the following formula to receive the final installed height in my Tbird: FreeHeight - (FrontOrRearWeight/2)/SpringRate)
I substract how much the spring will be compressed when installed, from the free height of the spring, to receive the installed height. Front and rear weight are divided by two, because there are two springs in the front and back, not just one. Spring rate tells me how many lb are needed to compress the spring by one inch.
I would say my calculation should be correct.
So, if I want to lower the car by about 2 inches, I would go with part # 8654 in front and 60230 or 60232 in rear.
Fixed values (with just tiny derivation) are/were Inner Diameter and the End Types of course. Moreover Spring Rate should fit more or less, in case I don´t want to ride a boat or a stiff carriage.
Any objections?
Moog has this great list of all their springs.
Rockauto lists part # 8314 for front and 8545 for rear application.
The original Ford Specifications form says a front weight of 2495lb and rear weight of 2034lb for my vehicle.
I made a Excel Sheet with potential spring alternatives for lowering the vehicle.
The last column contains calculated installed height of the spring in the Tbird.
Calculation is based on the following formula to receive the final installed height in my Tbird: FreeHeight - (FrontOrRearWeight/2)/SpringRate)
I substract how much the spring will be compressed when installed, from the free height of the spring, to receive the installed height. Front and rear weight are divided by two, because there are two springs in the front and back, not just one. Spring rate tells me how many lb are needed to compress the spring by one inch.
I would say my calculation should be correct.
So, if I want to lower the car by about 2 inches, I would go with part # 8654 in front and 60230 or 60232 in rear.
Fixed values (with just tiny derivation) are/were Inner Diameter and the End Types of course. Moreover Spring Rate should fit more or less, in case I don´t want to ride a boat or a stiff carriage.
Any objections?