For those with driver Shelby's does anyone know of a leaf spring supplier who can offer a set of rear leaf springs with the correct size smallest (bottom) leaf? This is the leaf with the stamped Shelby part number.
Eaton just gives a hard time stating to duplicate this leaf (excluding any stamping of course) would be an extra $800+.
Thanks,
TonyS
Quote from: TS69GT500 on June 23, 2026, 06:35:41 PMFor those with driver Shelby's does anyone know of a leaf spring supplier who can offer a set of rear leaf springs with the correct size smallest (bottom) leaf? This is the leaf with the stamped Shelby part number.
Eaton just gives a hard time stating to duplicate this leaf (excluding any stamping of course) would be an extra $800+.
Thanks,
TonyS
All of the times I have talked to Eaton he insists that there is no such thing as the S9MS marked leaf springs and that he should know because he has all of the Ford engineering drawings. I hope that you are aware that the only leaf that is the same as a regular mustang is the top leaf that the bushing is pressed in and the other end is for the spring shackle. The bottom leaf you described and so you are aware the next two leafs are Shelby unique and each longer then the typical Mustang leaf's. It is a rare unique set. I know a guy who has a set of left and right leafs in case you want original.
If you don't care about the historical look then a set for a 69 Mustang will work fine . The vast majority will not know the difference.
A great path... " I havent seen it so it doesnt exist"
Hello Bob,
Thanks for the reply.
I still have my originals (the second leaf from the bottom broke on the drivers side).
I am using a set of big block 69 Mustang springs that were purchased from Mustangs Unlimited years ago.
Don't resemble originals but the ride height and spring rate were dead on, excellent set of springs.
I'd like to get back to something resembling original because that's just me.
For all the positive publicity the Mustang world (print, online and video) gives Eaton, I find their attitude a bit surprising.
The 69 shelby is the only mustang i know of with a unique totally different rear leaf spring design so i wonder if a different vendor was used beside the regular eaton company?
Quote from: TS69GT500 on June 24, 2026, 08:42:47 AMHello Bob,
Thanks for the reply.
I still have my originals (the second leaf from the bottom broke on the drivers side).
I am using a set of big block 69 Mustang springs that were purchased from Mustangs Unlimited years ago.
Don't resemble originals but the ride height and spring rate were dead on, excellent set of springs.
I'd like to get back to something resembling original because that's just me.
For all the positive publicity the Mustang world (print, online and video) gives Eaton, I find their attitude a bit surprising.
There was a company EATON who was a OEM supplier to Ford ("E" marked on bottom spring leaf) for years who is still in business but gobbled up by a conglomerate and consequently a name change. For Years people assumed that Detroit Eaton was the same old Ford supplier company (not true) and the people there kept up that charade . People not knowing it was a different company thought that since they were the original Ford spring supplier that they knew everything (wrong). I knew this and asked the question and number of years ago now. It took several times of me asking the question of if they were the OEM supplier to Ford in the past and getting double talk before he finally admitted that his was a different company. Yes he is very difficult to deal with and since he doesn't have the Ford drawings of S9MS leaf spring that it doesn't exist. I for one have always had problems with their Detroit Eaton's springs regardless of if coil or leaf setting too high compared to Ford documents as listed on their so called application chart. This is even though they claim that they make each up special depending on application. I find it puzzling that if that was true how I could get so many that were the wrong height over the years. First you have to convince him that there is a problem and if you are able to do that he says send them back which seems good at first until you consider that it is at your expense. The cost of sending back and the cost of sending a replacement set expense ads up and is comparable to the cost of a new set plus the time and stress associated with that process so he is not doing you any favors. It is cheaper to take the leaf's to a shop and have them re arched or cut the coils of coil spring to compensate. Oh and I forgot to mention that they dip the leaf's in a vat of black paint and the coating comes out extra thick with drips many times. Putting the thick drippy painted leaf's on looks terrible and painting over them with metal colored paint doesn't help . Stripping the paint is a big chore and of course you have to change out the leaf clamps because they are different then factory if you care about those things. With all that said as long as you know this going in you will not have unrealistic expectations of what you will get. Unfortunately I have not found a viable alternative.