Drive Shaft Diameter?

[biohazardbill]

The sub originally had a driveshaft whose diameter was about as big as a soft ball, however picking up a junkyard driveshaft off a 3/4 ton truck to get a pinion that one had a diameter of about a base ball. Sub was a one piece, truck was a 2 piece.

Is there a difference in strength or an advantage of one over the other?

[towersddg9]

Originally Posted by biohazardbill

The sub originally had a driveshaft whose diameter was about as big as a soft ball, however picking up a junkyard driveshaft off a 3/4 ton truck to get a pinion that one had a diameter of about a base ball. Sub was a one piece, truck was a 2 piece.

Is there a difference in strength or an advantage of one over the other?

I have a Denny's shaft, I originally ordered the 2.5 inch one piece shaft, the tech called and said that a 3 inch would be much stronger at the length needed, my truck is swb, 700r4 using forward hole on eng perch, I think it was around 53inch

[Dunenutt]

For long shafts they use larger diameter for the rigidity over the span. The smaller diameter shafts are usually thicker wall for strength. Both will work, as long as the span isnt too long.

[biohazardbill]

Thanks.. Guess I will wait til i get the trans in and measure... leave it up to the drive shaft place..