Corp 14 bolt, different lengths?

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Corpse

Full Access Member
Joined
Feb 9, 2012
Posts
81
Reaction score
1
Location
Toronto, Canada
First Name
Ramon
Truck Year
1983
Truck Model
K5 Blazer
Engine Size
6.2 Diesel
I was watching extreme 4x4 and slappy spikey hair said that there are two different lengths of 14 bolts 63" and 67"(dont quote me, i think those are the dimensions he said)

Anyway... So gm likes to put shorter rear axles in their trucks(anyone know why?) and to me it looks stupid... So should i get the same length 14 bolt(as my stock 10 bolt) and get spacers or properly offset wheels to match the front or should i get the longer one?
 

Swims350

Full Access Member
Joined
Jul 30, 2010
Posts
4,351
Reaction score
812
Location
Logan WV
First Name
Chris
Truck Year
1983
Truck Model
K10
Engine Size
none
my guesses would be one(shorter) being for dual rear wheels, and the longer for single rear.

If not then it's year range, the 73-87's compared to 88-98 trucks have wider or shorter rears. I think the 88-98's are wider.
 

Tyger13us

Full Access Member
Joined
Jan 13, 2012
Posts
267
Reaction score
8
Location
BFE,Ut
First Name
Jeff
Truck Year
78
Truck Model
k10
Engine Size
450hp/357cid
I was watching extreme 4x4 and slappy spikey hair said that there are two different lengths of 14 bolts 63" and 67"(dont quote me, i think those are the dimensions he said)

Anyway... So gm likes to put shorter rear axles in their trucks(anyone know why?) and to me it looks stupid... So should i get the same length 14 bolt(as my stock 10 bolt) and get spacers or properly offset wheels to match the front or should i get the longer one?

narrower in the rear and wider in the front is so they dont plow like a dump truck,, nothing worse than coming into a corner and turn the wheel and it keeps going straight.....
 

X-cabsquarebody

Full Access Member
Joined
Aug 19, 2012
Posts
213
Reaction score
73
Location
Western NC
First Name
Billy
Truck Year
80, 80, 87, 91
Truck Model
C10, C10 ,K30 , 3500
Engine Size
305 TPI, 454, 8.1
On 14 bolt axles, there are two widths. SRW and DRW pick up 14 bolt axle are 67" , chassis cab trucks have 63" axle. The housings are the same, the difference in the widths is in the off set on the hubs.
 

woodsrider250

Full Access Member
Joined
Sep 25, 2012
Posts
302
Reaction score
7
Location
Fredneck, MD
First Name
John
Truck Year
1974
Truck Model
C20
Engine Size
350-Qjet
Bible? SWEET! Lots of good stuff in there! thx.
 

GreaseDog

Full Access Member
Joined
Aug 8, 2010
Posts
1,189
Reaction score
33
Location
Elkhart, IN
First Name
Jeremy
Truck Year
1977 K20
Truck Model
1980 K2500
Engine Size
350
On 14 bolt axles, there are two widths. SRW and DRW pick up 14 bolt axle are 67" , chassis cab trucks have 63" axle. The housings are the same, the difference in the widths is in the off set on the hubs.

Having owned several c&c 14 bolts, I can assure you, the c&c housing is considerably narrower.
 
Last edited:

GreaseDog

Full Access Member
Joined
Aug 8, 2010
Posts
1,189
Reaction score
33
Location
Elkhart, IN
First Name
Jeremy
Truck Year
1977 K20
Truck Model
1980 K2500
Engine Size
350
Another thing to consider with your "source"... if you remember, before the show was created, there was an internet based contest for a host for an off road show for spike tv... He won his job in an internet contest, and is now a puppet for writers who are sometimes misinformed.
 

crazy4offroad

Equal Opportunity Destroyer
Joined
Jul 30, 2010
Posts
8,468
Reaction score
1,070
Location
West BY-GOD Virginia
First Name
Curt
Truck Year
1979
Truck Model
K-10
Engine Size
350/SM465/NP205
A regular dually truck has the bed fenders to cover the back wheels, where a C&C tucks dually wheels under the width of the bed.
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
29,127
Reaction score
24,038
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
Having owned several c&c 14 bolts, I can assure you, the c&c housing is considerably narrower.

The housing actually is the same width, that's why the axle shafts interchange between the two. However, it does look much narrower because of where the backing plates are mounted on the housing. When you strip it all down it becomes obvious that the only difference is where the backing plate mounts are welded to the housing.
 

GreaseDog

Full Access Member
Joined
Aug 8, 2010
Posts
1,189
Reaction score
33
Location
Elkhart, IN
First Name
Jeremy
Truck Year
1977 K20
Truck Model
1980 K2500
Engine Size
350
Having had 2 of them stripped down next to each other, the housing lengths are different from spindle to spindle.
 

Corpse

Full Access Member
Joined
Feb 9, 2012
Posts
81
Reaction score
1
Location
Toronto, Canada
First Name
Ramon
Truck Year
1983
Truck Model
K5 Blazer
Engine Size
6.2 Diesel
And how wide is the d60 in comparison? Or are their different variations of that too?
 

GreaseDog

Full Access Member
Joined
Aug 8, 2010
Posts
1,189
Reaction score
33
Location
Elkhart, IN
First Name
Jeremy
Truck Year
1977 K20
Truck Model
1980 K2500
Engine Size
350
And how wide is the d60 in comparison? Or are their different variations of that too?

there are only 2 different widths on a front 60. a DRW and a SRW. the DRW is 5-6" wider IIRC.
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
29,127
Reaction score
24,038
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
Having had 2 of them stripped down next to each other, the housing lengths are different from spindle to spindle.

I just don't see how that can be. The dually hubs alone are enough to push the wheel in right next to the spring, if the housing were narrower the tire would be touching the spring. Unless the housing isn't very much narrower at all. From spindle to spindle, what kind of difference are we talking here?
 

crazy4offroad

Equal Opportunity Destroyer
Joined
Jul 30, 2010
Posts
8,468
Reaction score
1,070
Location
West BY-GOD Virginia
First Name
Curt
Truck Year
1979
Truck Model
K-10
Engine Size
350/SM465/NP205
14b FF, from here http://www.pirate4x4.com/tech/billavista/14b_bible/index.html

SRW (single rear wheel truck) 67.5"

DRW (dual rear wheel truck) 72"

C&C (cab and chasis truck) 63.5"

Van 70" G30 and G35T


D60, from here http://www.pirate4x4.com/tech/billavista/60_front/
Dodge and Chevy front Dana 60s are very similar, and in many cases fairly interchangeable - both parts and entire assemblies...
All SRW Chevy D60s are 69" wide wheel-mounting-surface to wheel-mounting-surface (wms-wms).
A Dodge DRW D60 is 75.5" wms-wms.
 
Last edited:

Forum statistics

Threads
42,182
Posts
910,809
Members
33,675
Latest member
johnalen76
Top