The Ford Barn - View Single Post - 3.78 vs 3.54 rear end and speedometer/miles

30 Closed Cab PU · 08-19-2020, 08:06 PM

My late 30 pickup also had a 4.11 in it and had a shop put in 3.54. Rebuilt engine standard head. Nice to now be able to keep up with other club members at 45 mph without the engine at really high revs. Good power for hills, max top speed is 55 mph. I do not drive highway speeds so this is OK with me.

From what I've read people who drive highway speeds run a Mitchell with 3.78 rear end. Do not remember which ratio Mitchell most run.

08-19-2020, 08:06 PM	#12
30 Closed Cab PU Senior Member Join Date: Aug 2018 Posts: 2,332	Re: 3.78 vs 3.54 rear end and speedometer/miles My late 30 pickup also had a 4.11 in it and had a shop put in 3.54. Rebuilt engine standard head. Nice to now be able to keep up with other club members at 45 mph without the engine at really high revs. Good power for hills, max top speed is 55 mph. I do not drive highway speeds so this is OK with me. From what I've read people who drive highway speeds run a Mitchell with 3.78 rear end. Do not remember which ratio Mitchell most run.