- Joined
- Apr 14, 2019
- Messages
- 401
- Reaction score
- 202
- Location
- Center Valley , PA18034
- My Car
- 72 Vert 351C White
Hi,
I have a question and looking for feedback concerning my 72 351C vert I've been slowly doing a rolling restoration and next in line was my very noisy differential. I'm trying to keep the car stock and original. Just a plain old weekend car. Going in I knew it was a 2.75 standard diff mated to an FMX trans. It's all original and the diff tag matches.
The rebuilder is having trouble finding a 2.75 gear set 'domestically' made and says the closest would be a 3.0 ratio. The wear pattern is bad and he is concerned if it's not replaced along with the bearings it will whine.
1. Other than some loss of higher speed and maybe a little better acceleration do you see any other issues with this change?
2. Also, I suspect the speedometer will be off a bit, is this correct and could I change the speedo gear cable for a FMX trans.
Thanks
I have a question and looking for feedback concerning my 72 351C vert I've been slowly doing a rolling restoration and next in line was my very noisy differential. I'm trying to keep the car stock and original. Just a plain old weekend car. Going in I knew it was a 2.75 standard diff mated to an FMX trans. It's all original and the diff tag matches.
The rebuilder is having trouble finding a 2.75 gear set 'domestically' made and says the closest would be a 3.0 ratio. The wear pattern is bad and he is concerned if it's not replaced along with the bearings it will whine.
1. Other than some loss of higher speed and maybe a little better acceleration do you see any other issues with this change?
2. Also, I suspect the speedometer will be off a bit, is this correct and could I change the speedo gear cable for a FMX trans.
Thanks
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