help with c30

[tnblazerk5]

i got a 69 c30 and dont know what to do with it yet
how can i tell what gear is in the rearend of it or do i have to take the cover off to see ?
how hard will it be to make a 4x4 out of it ?
i have got a tranny and xfer case and a 8 lug 10 bolt for the front end out of a 77 3/4 ton truck can i take the spring purches of the 77 and put them on the 69 ?
do i need to use the 14 bolt rear out of the 77 too ?if so where can i get a duelly conversion kit for it ?

[tnblazerk5]

anybody ?

[JIMs70GMC]

is it a daully c30? probably has 5.14 gears. You could jack up one tire and rotate the wheel twice and count the number of times the driveshaft turns, little over 5=5.14 right at 4.5=4.57 or just over 4= 4.10.
yukon jack has a buddy that has converted a 2wd C30 to a 4wd. PM him.

[tnblazerk5]

i will get pics as soon as the batterys charge
and i dont think the rear is factory from the looks of the rear of the frame it was a dump truck at one time
and thanks i will pm him

[1969 GMC]

if the rear axle isnt too rusty, the gear ratio might be stamped on the outside of the third member. both of the third members I have are this way.

[tnblazerk5]

ok i will look when i get the pics ,thanks

[67_C-30]

You could give it to me!! - j/k. I'm building a dually out of mine. Here are a few threads that may give you ideas!

http://67-72chevytrucks.com/vboard/s....php3?t=140970


http://67-72chevytrucks.com/vboard/s....php3?t=126946

[tnblazerk5]

give it to you sorry i just got it and have been wanting a 1 ton for a long long time now i got one ,,,,,,,,well part of one anyway so far its a rolling frame with a flatbed on it and i want to make a 4 wheel drive out of it like the one yukon jack's buddy has but with a 67 cab and front clip on it

[Tx Firefighter]

I've got a couple of duallys.

They usually have some sick ratio in the rearend like 4.56 or 5...something. What I did was to pull a center section out of a 3/4 ton rearend and put it in. That got me a 4.10 ratio, which isn't great, but better.

The centersection swap is dead easy. Just unbolt the axles and pull them out a few inches, then unbolt the center section. It will drop onto the ground.

The dually has an HO72 rearend and the 3/4 ton has an HO52 rearend. But, the centers swap directly without mods. The HO72 dually rearend is hypothetically somewhat stronger, but it's splitting hairs in my opinion.

[tnblazerk5]

this rear looks alot bigger than a HO72/52 to me, it looks like what ya find under dumptrucks or school buses as soon as i get new batterys for the camera i will get pics of it ( the rechargeable ones died )

[JIMs70GMC]

Is the cover removable? If not its a H110. the no-spin is still available for it.

[tnblazerk5]

ok i got batterys for the camera and heres pics of the rear end . what is it ?

wheels


rear end

[1969 GMC]

yup, thats the H110. it was an optional rear axle for the C30 series. 11,000# capacity 12.25" ring gear...its a big'un.

[67_C-30]

Wow! I didn't know you could get a 1 ton with that rearend. What size rims does truck have??

[tnblazerk5]

can a 78 4x4 front end be used under the a 2 wheel drive 69 c30 if i use the 4x4 front springes and purches from the 78 ? anybody did this ?

69 front end


78 front end


78 front spring rear mount


78 front spring front mount

[tnblazerk5]

Originally Posted by 67_C-30

Wow! I didn't know you could get a 1 ton with that rearend. What size rims does truck have??

18 inch split rims and they got to go lol

[67_C-30]

Are you going to put a bed on it, or leave it as a flatbed?

[tnblazerk5]

Originally Posted by 1969 GMC

yup, thats the H110. it was an optional rear axle for the C30 series. 11,000# capacity 12.25" ring gear...its a big'un.

ok thanks at least i know what it is now so i can look for the gear ratio on the stump sumwhere then ?

[tnblazerk5]

Originally Posted by 67_C-30

Are you going to put a bed on it, or leave it as a flatbed?

flat i am also goin to add a goose neck hitch to it !!!!!

[67_C-30]

If you are going to leave it flatbed, I have a '66 3/4 ton 4X4 that you could put your body on. It already has a 14 bolt rear and D44 frontend. It has a 305V6 with a SM420 4 speed.

[tnblazerk5]

what ya wantin for it ? how would i get it to here ?

[67_C-30]

I was hoping to get $800 out if it since the old V6 runs so good. I know it will part for more, but I'd like tro see somebody be able to use it as is. I could possibly deliver it since your in TN. Also, if you are still looking for a 4 speed bell housing, I can put one on your door step for $50. I get a great rate on shipping and you are close.

[tnblazerk5]

Originally Posted by 67_C-30

I was hoping to get $800 out if it since the old V6 runs so good. I know it will part for more, but I'd like tro see somebody be able to use it as is. I could possibly deliver it since your in TN. Also, if you are still looking for a 4 speed bell housing, I can put one on your door step for $50. I get a great rate on shipping and you are close.

i will have to think on that and i really dont need the motor but i may be interested in the bell housing

[JIMs70GMC]

Probably has 5.13 gears. The no-spin is still available for that rear also.

[tnblazerk5]

Originally Posted by JIMs70GMC

Probably has 5.13 gears. The no-spin is still available for that rear also.

ok but where would i find a front gear to match it at will that low of a gear even fit in the front housing i got ? i really want it to be a 4x4 i kinda need 4x4 around here with all the hills and wet weather