Opinions about original helper springs

[Metalaroundstone]

I am thinking about finding and installing a set of original helper springs to beef up the load capacity of my 66 c10 lwb. I carried a full load of compost the other day and the bed really angled down in the back. I would like some opinions about how well these helper springs work, and any ideas on where I could get a set. I think this is what one of the springs looks like.
Robert

[1963c-10]

You will have to find the rear end that has the bumpers on them for the auxiliary springs to rest on....I have a pic somewhere...let me look

[1963c-10]

Heres some pics of the mount that goes between the trailing arms and the rear end...the springs will rest on these and mount to the frame

[jayoldschool]

The springs in the top pic aren't the factory helper springs. The springs in post #3 are.

[1963c-10]

I wouldn't mind finding a set myself.

[1963c-10]

Heres a better reference pic Woogeroo. These pics are of a truck that 5150 parted out a few months back.....i missed out due to my schedule, but I'll come across another set soon...hopefully.

[jayoldschool]

My 65 has them. Going from memory, the GVW is higher for trucks equipped with this option.

[1963c-10]

ive got a data sheet on them somewhere in my stack of books...ill check through them this weekend if someone else doesnt have them.

[1963c-10]

ive seen them in the single leaf and triple leaf design. i think the single leaf was 67-72 though, maybe someone knows more specifics

[1963c-10]

Originally Posted by jayoldschool

My 65 has them. Going from memory, the GVW is higher for trucks equipped with this option.

They are good for an extra 500lbs per each side.

[1963c-10]

Here are some pics of a single leaf design that I came across last night.

[1963c-10]

Ill get the part numbers posted tonight. Ive seem them listed as auxiliary springs in my literature. Found a nice set last night, shortly after posting that I wanted a set. Should be enroute as we speak.

[aerotruk63]

1965 GMC used Timbren Rubber Springs for leafspring overload



1963 Custom Accessories Book.
1 part number for both 10 and 20 series.

[1963c-10]

is that a short bed frame? i could use some mounting measurements

[63burban]

Long box 3/4 ton 1965

[jayoldschool]

My 65 (LWB C10) has the multi-leaf springs. I'd never seen the single leaves until this thread.

[jayoldschool]

No problem, I'll shoot some tomorrow. Bed's off, too!

[1963c-10]

67-72 models had the single leaf from what ive seen and the triple leaf in 60-66. just from what i gathered off the 67-72 threads...but the frame and rear ends were thhe same, so i dont see where either model wouldnt work just fine

[1963c-10]

and the mounts look the same, the springs are reproduced, so i imagine you could always put new triple leafs on...lmc shows the same part for 60-72

next concern is figureing out placement of tow bar, factory rear tow hooks and the overload springs...this will be fun

[jjzepplin]

http://tampa.craigslist.org/pnl/pts/4081629358.html These?

[1963c-10]

no problem woogeroo, im always glad to post info if i have it.

jjzeplin, those are correct, just missing the mounts for under the trailing arms.

it appears my frame is drilled for them...i have 4 holes drilled in the rear and the pattern is consistent w/the mount. ill know in a few days when they arrive. i need to check my 64 and 61 frames and see if they have the holes predrilled

[Metalaroundstone]

Originally Posted by 1963c-10

no problem woogeroo, im always glad to post info if i have it.

jjzeplin, those are correct, just missing the mounts for under the trailing arms.

it appears my frame is drilled for them...i have 4 holes drilled in the rear and the pattern is consistent w/the mount. ill know in a few days when they arrive. i need to check my 64 and 61 frames and see if they have the holes predrilled

After studying the pictures posted of the correct 3 leaf assist springs, I looked under my 1966 c10 1/2 ton and could not find the 4 necessary holes pre-drilled in the frame. Was your 64 frame pre-drilled? I am wondering if these were a dealer option and the frame had to be drilled for them.
Robert

[aerotruk63]

Below are order sheets for 66 and 63. Auxillary springs were G60. Many Accessories could be installed by the dealer if it was not factory ordered.

1966



1963

[firemanjimtfd]

Here is the pic of the helper or over load springs on my 66 C-10

[jayoldschool]

First time I've ever seen that setup!