Originally Posted by Woodswarrior
Done this before; here it is again (or reason not to worry):

"Let's see, we take out an old engine that puts out maybe 250 lb. ft. torque, backed by a granny tranny with a 7.0 low gear, and replace it with a V8 with, say, 400 lb. ft. torque and an auto tranny with a 2.5 low gear.

250 x 7.0 = 1750 lb. ft. torque to the rear versus 400 x 2.5 = 1000 lb. ft. torque to the rear.

And how come nobody worries about the driveshaft and U-joint as well as the rear end?

Just sayin'!"
Great post Woody!

1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission