1/2 ton vs. 3/4 ton vs. 1 ton Springs

[8t5Silverado]

How many different types of springs are there. Is it more dependent on the engine type or are there different springs for each of these trucks?

1/2 ton 6 cyl.
1/2 ton small block
1/2 ton big block

3/4 ton small block
3/4 ton big block

1 ton big block

Also, is a "Heavy Half" just a 1/2 ton with rear 3/4 ton springs, or does it have them in front too?

[8t5Silverado]

anyone know?

[SanitysBane]

the big block springs are able to hold up to the added weight. on my truck taht came with small block springs when i put the big block in it droped it down about 2 inches or so, and on our 77 3/4 with a 454 when we put a small block in it, the front of the truck was higher than stock. im not shure about weither its from a 1/2 3/4 or 1 ton but i think that the spring does change as to how much weight that it can hold. and didn't they put small block in the 1 tons? i don't know about the heavy half, but i do that in 77 if u got a 3/4 with a 454 it was a 1 ton, xpt minus the dualy. it had heavy duty 1 ton front brakes and light duty 1 ton brakes on the rear. i wish i was able to adapt thoes spindles and calipers for my truck, as well as get that dana 60...hind sight is always 20/20 i guess

[dswancutt]

I checked my 85 GM parts manual, and on the half ton alone, there are 5 different spring P/N, based on which brake option and if it has the heavy duty suspension. The heavy duty spring package in the half ton shares a spring with the 3/4 ton. Let me see if I can scan this page at work and try to post it.

Doug

[8t5Silverado]

PM'd you, Doug.