1st gear......
mine didn't weigh 6, it weighed closer to 5.
well 3,500lb car, spare tires, and the trailor.
16 foot dual axle trailor.
I'm not saying I was racing F-250's at the lights..... but it pulled it fine.
And yes I used up every bit of rpm's I had prior to shift.
And yes there was some obvious slippage of the clutch taking off.... but the car was well balanced, and it did not hurt the truck, at all.
I would not be afraid to do it again.
and Muehlenburg, and all of Western Ky, is not flat.
I specifically remember stopping on a hill, with it on the back because some women were in the road I knew... and wanted to look the car over. Took off fine.... drove on home.
Frank