spring size differences

[big_truxx]

whats the difference between 1/2 3/4 and 1 on springs both front and rear? are 1/2 & 3/4 52" rear and ton 56"? and is the front 48" on both the 1/2 and 3/4 and the ton bigger or are they all the same on the front?

 

[boz42]

all frts are 48", rear 1/2 got 52" or 56". all 3/4 & 1 ton rears are 56" this is true on the 73-91 solid axle trucks

 

[rubbinz raczn]

all frts are 48", rear 1/2 got 52" or 56". all 3/4 & 1 ton rears are 56" this is true on the 73-91 solid axle trucks

actually i think most 3/4 ton trucks got 52" rears. i have had 5 of the 73-87 year range and all had 52's. i had 2 3/4 ton suburbans and both had 56's.

 

[big_truxx]

sweet thanks! i love info. i spose im kinda the knowledge monster.

 

[dremu]

Note that you're a special case, as crewcabs, even 3/4's, all have the 1-ton frames. At least, this was the case in the 70's, donno about your newfangled ones

Easy thing, measure the spring perch spacing on your rear axle.

-- A

 

[big_truxx]

i had heard that all the crew cabs did have the one ton frame. but its cool that all fronts are the same. whats the difference in the 1/2, 3/4 and ton front springs? each have a leaf more than the other?

 

[rubbinz raczn]

i had heard that all the crew cabs did have the one ton frame. but its cool that all fronts are the same. whats the difference in the 1/2, 3/4 and ton front springs? each have a leaf more than the other?

i think 1 tons had 3" wide springs, front anyways. 1/2 3/4's had 2-1/2

 

[84_Chevy_K10]

All of our trucks have 3" wide front springs. Aftermarket lift springs are 2 1/2".

1/2 tons 52s or some had 56s
3/4 tons, most 56s, some 52s
1 tons, 56s

Front springs can be two, three, or four leaf from the factory. My K10 originally had 3 leaf front springs because it had that listed as an option.

 

[big83chevy4x4]

all stock front springs are 3" wide. there are 2 leaf packs and 3 leaf packs, both can be found in 1/2 and 3/4. i think the 1 tons got 3 leaf only, haven't seen to many of those to know for sure.

the rears are 52" and 56", 52s are found it blazers 1/2 ton trucks/burbs, some 3/4 ton trucks and some 3/4 ton burbs

the 56" were found in all 1 tons and some 3/4 ton trucks and burbs, it depends on the GVW of that particular vehicle.

i have seen 52" 1 ton springs made specifically for tow trucks

 

[rubbinz raczn]

All of our trucks have 3" wide front springs. Aftermarket lift springs are 2 1/2".

1/2 tons 52s or some had 56s
3/4 tons, most 56s, some 52s
1 tons, 56s

Front springs can be two, three, or four leaf from the factory. My K10 originally had 3 leaf front springs because it had that listed as an option.

sh%t sorry!

 

[R72K5]

84 chevy k10 has it right

alot of 70s 10 series got 56" in the big 10 and heavy half days

late 70s k20 alot of them were 52" rears

 

[k5floyd]

so where'd the 63 inchers come from?

 

[big83chevy4x4]

63" springs come from 88 (new body style) and newer trucks

 

[spoolnaround]

Thread hijack!

Where can I find specs on spring rates and centerpin alignment etc? I am thinking obout having some springs made for the rear. I have Ferd 57's and want something a tad stiffer and the center pin hole in the right spot without having to drill another in it.