Question 1

What is a Squarebody Chevy truck?

Accepted Answer

"Squarebody" is the enthusiast nickname for the third-generation Chevrolet and GMC C/K full-size truck and SUV platform, produced from 1973 through 1987. The name refers to the boxy, squared-off body lines introduced for the 1973 model year. The generation covers C10, C20, C30, K10, K20, and K30 pickups, the K5 Blazer, the full-size Suburban, and the GMC Jimmy.

Question 2

What brake lines fit a 1973–1987 Chevy C10?

Accepted Answer

OvrDrive carries complete brake line kits, front brake line sets, intermediate brake lines, and rear axle brake lines specifically for the 1973–1987 Chevy C10. Lines are pre-bent to OEM specs in steel or stainless steel for direct bolt-on fitment without cutting or bending.

Question 3

Do you carry Squarebody fuel lines for both C10 and C20?

Accepted Answer

Yes. We carry Chevy Squarebody fuel lines for C10 and C20 (Chevrolet) as well as C1500 and C2500 (GMC) applications — chassis lines and pump-to-carburetor lines in both steel and stainless steel.

Question 4

What transmission cooler lines fit a Squarebody truck?

Accepted Answer

We carry transmission cooler line sets for 1973–1979 Chevy C10, 1973–1980 C10/C20 and GMC C1500/C2500 with Turbo-Hydramatic 350/400, and 1981–1987 Chevy K10/K20 and GMC K1500/K2500 4×4 trucks with the 700R4. Both steel and stainless are available.

Question 5

Will these parts fit a GMC Squarebody truck?

Accepted Answer

Yes. Chevrolet and GMC shared the same C/K platform for the Squarebody generation. Parts listed for Chevy C10 typically fit the GMC C1500, Chevy C20 fits GMC C2500, and so on. Product listings show all compatible makes and models.

Question 6

What is the difference between a C10 and K10 Squarebody?

Accepted Answer

The "C" prefix denotes a 2-wheel-drive (2WD) Squarebody truck and the "K" prefix denotes a 4-wheel-drive (4WD) truck. C10 is the ½-ton 2WD; K10 is the ½-ton 4×4. The same pattern applies across tonnage ratings: C20/K20 (¾-ton) and C30/K30 (1-ton).

Chevy & GMC Squarebody Parts — 1973–1987 C/K Trucks