C-30 dually Wheel experts?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

da-burb · 09-07-2002, 12:29 AM

I want to get rid of the split rims I have on my C30. I need to know if there is anything special to look for. I have looked at a couple of wheel web sites and they show different part numbers for Ford, Dodge and Chevy up to 1998+- even though they all have 8 lugs @9/16 on 6-1/2 diameter. I suppose the hub diameter or offsets could be the difference. I just want a nice looking, safe aluminum wheel and a pair of steels for the inner duals.

The truck is a 1971 C-30. The glove box door says that it originally came with 2-16x6 and 4-16x8. I am guessing that this would have been the tire size with the rims being 6" wide for all 6 of them. Right now they have 7.50x16 tires mounted. GVW for the vehicle is 14,000#'s if that matters.

crews · 09-07-2002, 10:14 AM

I think the difference in the wheels has to do with the actual hub dia.
Most duallys run the same bolt pattern, but the hub size is different...I think the Ford/ Dodge ones are smaller...not 100% sure, but I think thats right....as far as putting new rims on your dually, I would try the 73-87 style chevy steel wheels to see if the have the right offset....If memory serves me correctly, the later model wheels have too much offset.

Sorry not much help.....

C10 - C90 Bill · 09-07-2002, 05:59 PM

Call your local truck wheel distributor. Around here we have Chesapeake Wheel and Rim. I've been told by them that I can move up to the 1 piece newer rims and they will fit OK. Even tho I need more, I have 2 that came on my '68 C-30 and if I remember right they are dated 1983. BTW, are you sure that you have a 14,000 GVW that only came with 16" wheels?

da-burb · 09-08-2002, 04:27 PM

The numbers are taken off of the door plaque. It shows the front @ 3000#'s and the rear axle @ 11,000#'s with the total GVW @ 14000#'s. I was reading the owners manual and spotted the same thing that you are thinking. It says that trucks with GVW 14000#'s should have the larger diameter wheels.

I was thinking that if the hub diameter isn't correct for the wheel, then you would probably have to use tapered lugnuts instead of the flat ones that I have now. I am guessing that the hub is carrying the weight and the lugnuts just keep the wheel on the hub.

dmec · 09-08-2002, 06:41 PM

even though the ford chrysler and chevy have the same bolt pattern. the chevy is 1 of a kind. the center hole for the hub and the holes for the studs are smaller. the ford and chrysler are the same.

Rod · 09-08-2002, 10:12 PM

Here what my 14000 gvw lugs look like on my 72.

C10 - C90 Bill · 09-08-2002, 10:41 PM

Hey da-burb, I was talking to a Firestone Accu-ride expert at the factory (who make most of if not all of our 1 ton wheels) and he stated that on these wheels the important part is how the wheel fits the hub. He also stated to never let the lugs hold the weight, but just to hold the wheel on.

*Fast68Chevy* · 09-09-2002, 04:24 AM

i thought 11,000lb H22 axle trucks had a different wheel stud pattern than the 7200lb axle trucks ?

Capacity 11,000lbs, 6.17 ratio, available only when standard transmission, HD radiator, and 7.00-18/D or 8-19.5/D or 8-19.5/E rear tires are ordered. not available on picklup models or when 400 engine is ordered. includes 2500 lb each front springs, 4000lb front suspension, HD front and rear shock absorbers and 5900lb each main and auxilliary rear springs............. H22

da-burb · 09-09-2002, 05:18 PM

I haven't gone looking for the gear ratio yet. It can really fly down the freeway at 75 mph. It doesn't sound like it is anywhere close to 3000 rpm's yet. I would have a hard time believing that is is anything other than a 4.10 gear.

09-07-2002, 12:29 AM	#1
da-burb "Ochre Ogre" Join Date: Apr 2000 Location: Springfield, MN Posts: 3,558	C-30 dually Wheel experts?? I want to get rid of the split rims I have on my C30. I need to know if there is anything special to look for. I have looked at a couple of wheel web sites and they show different part numbers for Ford, Dodge and Chevy up to 1998+- even though they all have 8 lugs @9/16 on 6-1/2 diameter. I suppose the hub diameter or offsets could be the difference. I just want a nice looking, safe aluminum wheel and a pair of steels for the inner duals. The truck is a 1971 C-30. The glove box door says that it originally came with 2-16x6 and 4-16x8. I am guessing that this would have been the tire size with the rims being 6" wide for all 6 of them. Right now they have 7.50x16 tires mounted. GVW for the vehicle is 14,000#'s if that matters. __________________ Bowtie Truck Stop Inc. Mid-West GM Truck Restoration Parts Supplier Your Key Parts, Auto Metal Direct, Dynacorn, and Goodmark dealer. like us @ www.facebook.com/BowtieTruckStop 1971 C-10 Suburban (Ochre) 1971 K-10 Suburban (Ochre) 1972 C-10 Suburban (Ochre) 1972 K-20 Suburban (Yellow- that just aint right!) Springfield, Minnesota 56087

09-07-2002, 10:14 AM	#2
crews It just doesn't matter Join Date: Apr 2001 Location: Huntington Beach, Ca Posts: 1,660	I think the difference in the wheels has to do with the actual hub dia. Most duallys run the same bolt pattern, but the hub size is different...I think the Ford/ Dodge ones are smaller...not 100% sure, but I think thats right....as far as putting new rims on your dually, I would try the 73-87 style chevy steel wheels to see if the have the right offset....If memory serves me correctly, the later model wheels have too much offset. Sorry not much help..... __________________ 05 Chevy Silverado..... A rogue BMW guy.... If you don't like me- TAKE A NUMBER; There are people ahead of you!!

09-08-2002, 04:27 PM	#4
da-burb "Ochre Ogre" Join Date: Apr 2000 Location: Springfield, MN Posts: 3,558	The numbers are taken off of the door plaque. It shows the front @ 3000#'s and the rear axle @ 11,000#'s with the total GVW @ 14000#'s. I was reading the owners manual and spotted the same thing that you are thinking. It says that trucks with GVW 14000#'s should have the larger diameter wheels. I was thinking that if the hub diameter isn't correct for the wheel, then you would probably have to use tapered lugnuts instead of the flat ones that I have now. I am guessing that the hub is carrying the weight and the lugnuts just keep the wheel on the hub. __________________ Bowtie Truck Stop Inc. Mid-West GM Truck Restoration Parts Supplier Your Key Parts, Auto Metal Direct, Dynacorn, and Goodmark dealer. like us @ www.facebook.com/BowtieTruckStop 1971 C-10 Suburban (Ochre) 1971 K-10 Suburban (Ochre) 1972 C-10 Suburban (Ochre) 1972 K-20 Suburban (Yellow- that just aint right!) Springfield, Minnesota 56087

09-08-2002, 10:12 PM	#6
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	Here what my 14000 gvw lugs look like on my 72. Attached Images __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.

09-09-2002, 05:18 PM	#9
da-burb "Ochre Ogre" Join Date: Apr 2000 Location: Springfield, MN Posts: 3,558	I haven't gone looking for the gear ratio yet. It can really fly down the freeway at 75 mph. It doesn't sound like it is anywhere close to 3000 rpm's yet. I would have a hard time believing that is is anything other than a 4.10 gear. __________________ Bowtie Truck Stop Inc. Mid-West GM Truck Restoration Parts Supplier Your Key Parts, Auto Metal Direct, Dynacorn, and Goodmark dealer. like us @ www.facebook.com/BowtieTruckStop 1971 C-10 Suburban (Ochre) 1971 K-10 Suburban (Ochre) 1972 C-10 Suburban (Ochre) 1972 K-20 Suburban (Yellow- that just aint right!) Springfield, Minnesota 56087

09-07-2002, 05:59 PM	#3
C10 - C90 Bill Registered User Join Date: Nov 2001 Location: Moneta, VA USA Posts: 3,087	Call your local truck wheel distributor. Around here we have Chesapeake Wheel and Rim. I've been told by them that I can move up to the 1 piece newer rims and they will fit OK. Even tho I need more, I have 2 that came on my '68 C-30 and if I remember right they are dated 1983. BTW, are you sure that you have a 14,000 GVW that only came with 16" wheels?

09-08-2002, 06:41 PM	#5
dmec Senior Member Join Date: Jun 2000 Location: yucaipa ca Posts: 580	even though the ford chrysler and chevy have the same bolt pattern. the chevy is 1 of a kind. the center hole for the hub and the holes for the studs are smaller. the ford and chrysler are the same.

09-08-2002, 10:41 PM	#7
C10 - C90 Bill Registered User Join Date: Nov 2001 Location: Moneta, VA USA Posts: 3,087	Hey da-burb, I was talking to a Firestone Accu-ride expert at the factory (who make most of if not all of our 1 ton wheels) and he stated that on these wheels the important part is how the wheel fits the hub. He also stated to never let the lugs hold the weight, but just to hold the wheel on.

09-09-2002, 04:24 AM	#8
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	i thought 11,000lb H22 axle trucks had a different wheel stud pattern than the 7200lb axle trucks ? Capacity 11,000lbs, 6.17 ratio, available only when standard transmission, HD radiator, and 7.00-18/D or 8-19.5/D or 8-19.5/E rear tires are ordered. not available on picklup models or when 400 engine is ordered. includes 2500 lb each front springs, 4000lb front suspension, HD front and rear shock absorbers and 5900lb each main and auxilliary rear springs............. H22

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