srw to drw

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.

87silveradok20

Full Access Member
Joined
Jun 29, 2014
Posts
684
Reaction score
138
Location
Ohio
First Name
Levi
Truck Year
1987
Truck Model
Silverado k20
Engine Size
350
I want convert my truck to a drw. At the same time i want to do disc brakes. If i find a disc brake kit for a 14bt ff dually axle will i need anything else to convert my 14 bt sf to a dually. on the front i am going to run single wheels.
 

Konas new ride

Full Access Member
Joined
Feb 18, 2013
Posts
791
Reaction score
47
Location
Alberta
First Name
Gerald
Truck Year
1980
Truck Model
K20
Engine Size
350
Are spacers needed to clear the tire from rubbing on the frame when converting a srw to a dually? I was thinking the rear axle will be narrower for a srw truck.
I know a hub spacer for the front is needed to run the dually rim.

Anyone know any of this for sure?
 

kleedus

Full Access Member
Joined
Jan 25, 2012
Posts
1,726
Reaction score
162
Location
wyo
First Name
Ray
Truck Year
1960 threw 91
Truck Model
c10 to k30
Engine Size
350 threw 454
what axle are you going to use they had different width axles a lot of variables need to know what axle you plan to use.

single wheel 14 bolt 3/4 or 1 ton. spring perches are narrower on a 1 ton single wheel axle
dually with a bed used a dana 70 witch is wider
cab and chassis used a narrow 14 bolt

if you use the cab and chassis rear you will need 1 ton spring hangers the springs are closer to the frame on a 1 ton for added clearance for the inner wheel.

I have bolted dual wheels to a 3/4 ton 14 bolt but you should get longer studs to run the lug ring thing

diy4x.com disc brake brackets
http://diy4x.com/cart/index.php?route=product/category&path=37
 

87silveradok20

Full Access Member
Joined
Jun 29, 2014
Posts
684
Reaction score
138
Location
Ohio
First Name
Levi
Truck Year
1987
Truck Model
Silverado k20
Engine Size
350
what axle are you going to use they had different width axles a lot of variables need to know what axle you plan to use.

single wheel 14 bolt 3/4 or 1 ton. spring perches are narrower on a 1 ton single wheel axle
dually with a bed used a dana 70 witch is wider
cab and chassis used a narrow 14 bolt

if you use the cab and chassis rear you will need 1 ton spring hangers the springs are closer to the frame on a 1 ton for added clearance for the inner wheel.

I have bolted dual wheels to a 3/4 ton 14 bolt but you should get longer studs to run the lug ring thing

diy4x.com disc brake brackets
http://diy4x.com/cart/index.php?route=product/category&path=37

I dont know if i want to convert my truck to dually now, i wanted to only because i found a cheap dually bed. On the disc brake conversion will the conversions they have for the full float work on a semi float??
 

kleedus

Full Access Member
Joined
Jan 25, 2012
Posts
1,726
Reaction score
162
Location
wyo
First Name
Ray
Truck Year
1960 threw 91
Truck Model
c10 to k30
Engine Size
350 threw 454
I do not know if the disc brake brackets fit a semi float or not. I do not waste my time with the semi float axles. they are a good upgrade for a half ton if you can find one of the 6 lug versions.
 

68post

very, VERY, limited access member
Joined
Feb 20, 2014
Posts
281
Reaction score
97
Location
Indianapolis
First Name
Tim
Truck Year
1984
Truck Model
84 K30 SRW Silverado, 85 C20 C6P
Engine Size
454, TBD
Last edited:

68post

very, VERY, limited access member
Joined
Feb 20, 2014
Posts
281
Reaction score
97
Location
Indianapolis
First Name
Tim
Truck Year
1984
Truck Model
84 K30 SRW Silverado, 85 C20 C6P
Engine Size
454, TBD
You are so very welcome, glad to assist.
 

68post

very, VERY, limited access member
Joined
Feb 20, 2014
Posts
281
Reaction score
97
Location
Indianapolis
First Name
Tim
Truck Year
1984
Truck Model
84 K30 SRW Silverado, 85 C20 C6P
Engine Size
454, TBD
what axle are you going to use they had different width axles a lot of variables need to know what axle you plan to use.

I have bolted dual wheels to a 3/4 ton 14 bolt but you should get longer studs to run the lug ring thing

Please excuse this thread hi-jack.

I will be doing this to a C20 , did you have interference from the spring to inside tire ? Semi to full floater conversion ( 3/4 ton axle ), and changeover to dually.
I also need to convert from the small 3/4 ton brakes to dually large drums or disc brakes - any insight to those brake issues ? Disc the easiest route ?

I'll be going back to the "14 Bolt Bible" for alittle more insight myself , but it's not spelled-out too clear to me yet !

Thanks for anyones help on this , I may start a thread.
 

kleedus

Full Access Member
Joined
Jan 25, 2012
Posts
1,726
Reaction score
162
Location
wyo
First Name
Ray
Truck Year
1960 threw 91
Truck Model
c10 to k30
Engine Size
350 threw 454
if I remember right I had no clearance issue tire to spring. but the lug studs need changed to longer studs so you can run the ring for the lug nut tapper

semi floater to full floater is a direct swap

disc brakes on a full floater are easy but I would not waste the money putting discs on a semi floater. or putting dual wheels on a semi floater they are barley better than a 12 bolt half ton rear in my opinion.

diy4x.com makes nice disc brackets for the full floater for 70 bucks. then you can buy the calipers and rotors local to save shipping. if you want a park brake you will need Cadillac rear calipers and they are expensive
 

68post

very, VERY, limited access member
Joined
Feb 20, 2014
Posts
281
Reaction score
97
Location
Indianapolis
First Name
Tim
Truck Year
1984
Truck Model
84 K30 SRW Silverado, 85 C20 C6P
Engine Size
454, TBD
Thanks ! The full float axle would get the duals. What is the era of Caddy caliper to buy ?
19xx to 19xx ? ( I can find that with a search I'm sure , thanks for reminding us of it tho' )

The semi ain't so bad with a 9.5 ring gear and it's other shaft 'n bearing specs,( Dana 60 is only a 9.75 diameter), is it ? Mine has the large brakes on it too.

For what my trucks need to do a full float is the best for the job, but I'd like a semi in my '94 K1500 so I could put down more pwr , the front is a lost cause tho' !

THANKS Kleedus !
 

kleedus

Full Access Member
Joined
Jan 25, 2012
Posts
1,726
Reaction score
162
Location
wyo
First Name
Ray
Truck Year
1960 threw 91
Truck Model
c10 to k30
Engine Size
350 threw 454
if I remember right 76 to 78 caddy rear calipers
 

68post

very, VERY, limited access member
Joined
Feb 20, 2014
Posts
281
Reaction score
97
Location
Indianapolis
First Name
Tim
Truck Year
1984
Truck Model
84 K30 SRW Silverado, 85 C20 C6P
Engine Size
454, TBD
Thanks, that is great info for this thread .
 

87scotty

Full Access Member
Joined
Oct 8, 2015
Posts
1,087
Reaction score
319
Location
Central il
First Name
Andrew
Truck Year
1987
Truck Model
V20
Engine Size
5.7 for now
I am wondering about doing the oppisite i have a 1 ton dually 14bff i want to swap in my srw 87 3/4 14bsf spot
 

kleedus

Full Access Member
Joined
Jan 25, 2012
Posts
1,726
Reaction score
162
Location
wyo
First Name
Ray
Truck Year
1960 threw 91
Truck Model
c10 to k30
Engine Size
350 threw 454
You can change the spring hangers and make it a bolt in deal. I done it on my 90 crew cab you can see pics and info in my 90 crew cab short bed build in the under construction forum page 18 or 19 somewhere.
 
Last edited:

Latest posts

Forum statistics

Threads
44,164
Posts
950,709
Members
36,278
Latest member
kodyg86
Top