The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - differences in 3/4-1/2 ton frames???

Longhorn Man · 02-04-2010, 04:15 PM

Wes... for YEARS I've been reading that the frames are the same, both on here, and elsewhere. Knowing that you have gutted more trucks than I have even laid eyes on, I had to break out the books.
I flipped to 1969, since it is such a common year for the trucks (record sales) and I found you to be 100% right.
C/10 frames listed as:
39,000-lb test steel; section modulus 2.98
Then, flipping to the 3/4 ton page:
39,000-lb-test steel; section modulus 3.48

Now, I have no idea what section modulus means, but, it tells me enough to say thank you for teaching me something today.

02-04-2010, 04:15 PM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: differences in 3/4-1/2 ton frames??? Wes... for YEARS I've been reading that the frames are the same, both on here, and elsewhere. Knowing that you have gutted more trucks than I have even laid eyes on, I had to break out the books. I flipped to 1969, since it is such a common year for the trucks (record sales) and I found you to be 100% right. C/10 frames listed as: 39,000-lb test steel; section modulus 2.98 Then, flipping to the 3/4 ton page: 39,000-lb-test steel; section modulus 3.48 Now, I have no idea what section modulus means, but, it tells me enough to say thank you for teaching me something today.