one ton dually questions......... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

qksilver · 12-13-2007, 05:05 PM

Just picked up a 68 C-30 ramp truck.
It has split rim wheels on it plus factory drum brakes with power assist.

I have a set of dually wheels off of a 94.
what do I use for lug nuts/studs?
exactly where do I mount the ring that goes over the lugs?

I want to swap to front discs. Are the 71-71 3/4 spindles the same as a one ton? Calipers etc, except for the rotors?
If all the other parts listed above are the same except for the rotor, what do I use? Are the discs serviced separate from the hub/hat/spacer for dually wheels?

The major thing at this point is fitting the newer wheels on the truck, drums stop it pretty good but with all the 3/4 ton stuff I have it would be nice to have front disc.
I know I will need a new master cylinder and prop valve plus maybe new lines with new front brake hoses.

BCOWANWHEELS · 12-13-2007, 05:24 PM

looks like i,am comming to ft.bragg in the next couple weeks want me to bring you that rear end you had me pull for you a year ago.....

67_C-30 · 12-13-2007, 05:33 PM

You need bigger studs (9/16" or 14mm) to run the newer wheels. You can buy studs for a '71 - '72 since they stepped up to 9/16" in those years. You can just bolt them on, but I wouldn't due to the weight of a loaded ramp truck. To my knowledge the 3/4 spindles are the same, but I haven't actually tried that. I know You can change out spindles with any year from '71 - '87 C-30 on your truck. You will have to use 71-72 ball joints and tierods, but you can use your control arms. Another alternative is swapping out the the compate crossmember from a '71 - '87.

NOW - Let's see some pics of that bad boy! Of all the musclecars and old trucks I have, I get asked to sell my ramp truck more than any of them.
Here's mine.

stllookn · 12-13-2007, 07:46 PM

Love them ramps!!!!!!!!!!!!!

qksilver · 12-14-2007, 05:42 AM

Bob, I will pass on to the new owner of my wrecker your info. I was looking to get some better mileage for long distance, he is using it as a yard truck, so I don't know. The rear was in good shape except for the high gear ratio.

12-13-2007, 05:05 PM	#1
qksilver Senior Member Join Date: Dec 2004 Location: Southern Pines NC Posts: 3,853	one ton dually questions......... Just picked up a 68 C-30 ramp truck. It has split rim wheels on it plus factory drum brakes with power assist. I have a set of dually wheels off of a 94. what do I use for lug nuts/studs? exactly where do I mount the ring that goes over the lugs? I want to swap to front discs. Are the 71-71 3/4 spindles the same as a one ton? Calipers etc, except for the rotors? If all the other parts listed above are the same except for the rotor, what do I use? Are the discs serviced separate from the hub/hat/spacer for dually wheels? The major thing at this point is fitting the newer wheels on the truck, drums stop it pretty good but with all the 3/4 ton stuff I have it would be nice to have front disc. I know I will need a new master cylinder and prop valve plus maybe new lines with new front brake hoses.

12-13-2007, 05:24 PM	#2
BCOWANWHEELS Registered User Join Date: Nov 2006 Location: KINGSPORT,TN. Posts: 3,035	Re: one ton dually questions......... looks like i,am comming to ft.bragg in the next couple weeks want me to bring you that rear end you had me pull for you a year ago..... __________________ I BELIEVE IN JOHN 3:16

12-13-2007, 05:33 PM	#3
67_C-30 I have a radical idea! Join Date: Jan 2005 Location: Sweet Home Alabama! Posts: 6,513	Re: one ton dually questions......... You need bigger studs (9/16" or 14mm) to run the newer wheels. You can buy studs for a '71 - '72 since they stepped up to 9/16" in those years. You can just bolt them on, but I wouldn't due to the weight of a loaded ramp truck. To my knowledge the 3/4 spindles are the same, but I haven't actually tried that. I know You can change out spindles with any year from '71 - '87 C-30 on your truck. You will have to use 71-72 ball joints and tierods, but you can use your control arms. Another alternative is swapping out the the compate crossmember from a '71 - '87. NOW - Let's see some pics of that bad boy! Of all the musclecars and old trucks I have, I get asked to sell my ramp truck more than any of them. Here's mine. Attached Images __________________ '67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! Last edited by 67_C-30; 12-13-2007 at 05:37 PM.

12-13-2007, 07:46 PM	#4
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	Re: one ton dually questions......... Love them ramps!!!!!!!!!!!!! __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary)

12-14-2007, 05:42 AM	#5
qksilver Senior Member Join Date: Dec 2004 Location: Southern Pines NC Posts: 3,853	Re: one ton dually questions......... Bob, I will pass on to the new owner of my wrecker your info. I was looking to get some better mileage for long distance, he is using it as a yard truck, so I don't know. The rear was in good shape except for the high gear ratio.



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