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tubman · 11-27-2020, 12:11 PM

I have 3.55's in my '51 (no overdrive). I had no problem cruising at 60-65 with the somewhat tired original engine. With the new 255 Merc, a 70 mph cruise is easy, except in heavy traffic. This is not a problem with the car, but with other drivers.

I am in the (lengthy) process of installing an overdrive, but find that the 3.55's are optimum (unless you live in the mountains).

11-27-2020, 12:11 PM	#4
tubman Senior Member Join Date: Dec 2013 Location: Minnesota, Florida Keys Posts: 10,369	Re: Another gear ratios question I have 3.55's in my '51 (no overdrive). I had no problem cruising at 60-65 with the somewhat tired original engine. With the new 255 Merc, a 70 mph cruise is easy, except in heavy traffic. This is not a problem with the car, but with other drivers. I am in the (lengthy) process of installing an overdrive, but find that the 3.55's are optimum (unless you live in the mountains).