Help: ?'s about dually rears - The 1947 - Present Chevrolet & GMC Truck Message Board Network

SCOTI · 01-24-2003, 09:13 PM

Does anyone know the axle housing diameter of a stock 73 & later dually rearend? Are they bigger than 3" diameter tubing like similar year 12 bolt rears?

MOUSE · 01-24-2003, 11:00 PM

the 73 i had was a 3/4 ton and it had the 14 bolt corporate rear end. the tubes WERE 3". hope this helps...1PHATC

SCOTI · 01-24-2003, 11:05 PM

Hhmmm... my guess is the 14 bolt rear was pretty standard as far as packaging dimesions so the dually should be the same as the 3/4 ton.

Lester · 01-25-2003, 11:16 AM

The C30 and K30 dually rear ends were Dana 70's.

The C20 and K20 rear ends were mostly GM rearends, some were Dana 60's.

They are similar looking but are slightly different.

Lester

SCOTI · 01-25-2003, 11:59 AM

I figure someone on this board has access to a dually to measure the axle housing diameter & hopefully confirm/deny the 3" diameter.

u2slow · 01-26-2003, 02:19 AM

The DRW Dana 70s used in the C/K30 pickups have a 4" tube on them. Other ones (mostly vans) have a 3.5" tube. 14FF's have a 3-3/8" tube

01-24-2003, 09:13 PM	#1
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,064	Help: ?'s about dually rears Does anyone know the axle housing diameter of a stock 73 & later dually rearend? Are they bigger than 3" diameter tubing like similar year 12 bolt rears? __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

01-24-2003, 11:05 PM	#3
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,064	Hhmmm... my guess is the 14 bolt rear was pretty standard as far as packaging dimesions so the dually should be the same as the 3/4 ton. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

01-25-2003, 11:59 AM	#5
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,064	I figure someone on this board has access to a dually to measure the axle housing diameter & hopefully confirm/deny the 3" diameter. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

01-26-2003, 02:19 AM	#6
u2slow Web Wheeler Join Date: Jan 2000 Location: BC, Canada, eh? Posts: 388	The DRW Dana 70s used in the C/K30 pickups have a 4" tube on them. Other ones (mostly vans) have a 3.5" tube. 14FF's have a 3-3/8" tube __________________ '66 C10 longstep - Clifford equiped '84 C20 Suburban 6.2L - awaiting 4x4 conversion '91 V3500 Crewcab - awaiting diesel swap

01-24-2003, 11:00 PM	#2
MOUSE Registered User Join Date: Jan 2003 Location: Texas Posts: 16	the 73 i had was a 3/4 ton and it had the 14 bolt corporate rear end. the tubes WERE 3". hope this helps...1PHATC

01-25-2003, 11:16 AM	#4
Lester Registered User Join Date: Oct 2002 Posts: 84	The C30 and K30 dually rear ends were Dana 70's. The C20 and K20 rear ends were mostly GM rearends, some were Dana 60's. They are similar looking but are slightly different. Lester



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