1970 L47 400 BB Torque and HP chart

[Steeveedee]

Originally Posted by geezer#99

Considering your wife’s need for max 55 mph and quiet running then a swap to 4.10 gear isn’t worth it.
In second uphill you’re turning 3300 now. Switch to 4.10 and you’ll be up to 3900 rpm.
You might not get into 3rd. If you do it might be louder. Drones usually occur at lower rpm.
Best thing to do might be swapping to a lighter trailer.

That trailer is only 4 years old; I'd have to pry her cold, dead fingers off of it to sell it.

The RV store had some of the retro trailers, but she wanted a nice bathroom. That's what really drove her to the one she picked. I don't actually care, except for having to get it safely to where we're going.