Dually Wheel Fitment Help

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.

Grit dog

Full Access Member
Joined
May 18, 2020
Posts
7,109
Reaction score
12,540
Location
Auburn, Washington
First Name
Todd
Truck Year
1986, 1977
Truck Model
K20, C10
Engine Size
454, 350
Unfortunately that is the only way to get these so I do have polished inners as well. Nothing like not seeing your money haha
I was just gonna say you're a real baller!
 

Grit dog

Full Access Member
Joined
May 18, 2020
Posts
7,109
Reaction score
12,540
Location
Auburn, Washington
First Name
Todd
Truck Year
1986, 1977
Truck Model
K20, C10
Engine Size
454, 350
As for getting it on the road it is a flip kit drop, so it would have to be one heck of a spacer. I'm actually getting my stock wheels back and just going to slap those on until I can figure everything out.

If you could slap a cheap set of helper springs in it (presume you removed some leafs or a flip kit would be more than 8" on a 1 ton), to crank'er up just a little.
Can you roll the wheel well lip without messing up the paint? That would help, but I no good at bodywork.

Or **** can your rear wheels and have em make some super singles!

Now lets see a pic of what's parked next to it!
And have to post your color sand/cut/polish recipe. That paint job is perfect!
 

Craig 85

Full Access Member
Joined
Jan 25, 2017
Posts
3,918
Reaction score
4,129
Location
Nashville, TN
First Name
Craig
Truck Year
1985
Truck Model
K30 SRW
Engine Size
454/TH-400/NP205
Here's some reference info for you. I've posted this picture on the forum before (photo #1), its one I grabbed off the internet.

Form what I read, this is a chassis cab truck with a short bed installed. It is running standard 16" dually wheels, that just barely stick out from stand fenders. The inner tire is close to the spring with this set up (see photo #2 & 3). FYI the chassis cab rear end is a 14 Bolt, not a Dana 70 like you probably have. Photo #4 is my K30 SRW with a 14 bolt, but it has 13x3.5" drums like a dually does. My drums are spaced a little further out than the Chassis cab version.

FYI 3/4 ton 14 bolts are the same as mine with a couple of differences. Drums are only 3" wide, the spring hangers are farther apart and the shock mounts are on opposite sides of the axle.

Last photo is from AMD Direct. They make 4" wider inner wheel tubs, but of course they are out of stock. They would work if you used one of the narrowed axles.

You must be registered for see images attach

You must be registered for see images attach

You must be registered for see images attach

You must be registered for see images attach

You must be registered for see images attach
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
30,639
Reaction score
28,942
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
*Disclaimer* I'm not at all familiar with how these trucks are normally done with large dually rims...

I don't believe that a cab&chassis rear axle is a good option here. That will narrow up the track width way too much. Spacers would be needed, which I guess is why it works for most folks because they use an 8-10 lug adapter.

If you run a SRW axle, that will put the track width somewhere close to what is needed? I don't recall the difference compared to the D70 dually axle.

Another option may be a 14bolt full float axle from a G30 van. Iirc, they are a couple inches wider than a SRW truck axle and probably just a smidgen narrower than a full width dually axle.
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
30,639
Reaction score
28,942
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
Also, I must say that I really like the concept of these wheels. Looks like 10 lug, no adapters, wider fronts, polished inners.... I just dig it.
 

Android04

Junior Member
Joined
Sep 22, 2020
Posts
16
Reaction score
21
Location
Louisville, KY
First Name
Andrew
Truck Year
1985
Truck Model
C30
Engine Size
400 SBC
Now lets see a pic of what's parked next to it!
And have to post your color sand/cut/polish recipe. That paint job is perfect!

Both are just painted, no wet sand or buff! OrangeSlice is Prowler Orange and Willy is the original color. Cab is original other then rockers and floor pans. All other metal is replaced other then the hood and then all painted to match the patina look

You must be registered for see images attach
 

Android04

Junior Member
Joined
Sep 22, 2020
Posts
16
Reaction score
21
Location
Louisville, KY
First Name
Andrew
Truck Year
1985
Truck Model
C30
Engine Size
400 SBC
*Disclaimer* I'm not at all familiar with how these trucks are normally done with large dually rims...

I don't believe that a cab&chassis rear axle is a good option here. That will narrow up the track width way too much. Spacers would be needed, which I guess is why it works for most folks because they use an 8-10 lug adapter.

If you run a SRW axle, that will put the track width somewhere close to what is needed? I don't recall the difference compared to the D70 dually axle.

Another option may be a 14bolt full float axle from a G30 van. Iirc, they are a couple inches wider than a SRW truck axle and probably just a smidgen narrower than a full width dually axle.

I talked with a few guys yesterday and may just either narrow the rear and or try and find a 3/4 ton rear end.

I greatly appreciate everyone’s knowledge
 

Android04

Junior Member
Joined
Sep 22, 2020
Posts
16
Reaction score
21
Location
Louisville, KY
First Name
Andrew
Truck Year
1985
Truck Model
C30
Engine Size
400 SBC
Here's some reference info for you. I've posted this picture on the forum before (photo #1), its one I grabbed off the internet.

Form what I read, this is a chassis cab truck with a short bed installed. It is running standard 16" dually wheels, that just barely stick out from stand fenders. The inner tire is close to the spring with this set up (see photo #2 & 3). FYI the chassis cab rear end is a 14 Bolt, not a Dana 70 like you probably have. Photo #4 is my K30 SRW with a 14 bolt, but it has 13x3.5" drums like a dually does. My drums are spaced a little further out than the Chassis cab version.

thank you for the info!
 

da_raabi

Trailer Park Supervisor
Joined
Aug 7, 2013
Posts
1,403
Reaction score
901
Location
FloriDUH
First Name
Adam
Truck Year
1986
Truck Model
c30
Engine Size
454
Why not just pull a little of the drop back out of it? Those wheels would probably fit fine at stock height. Would losing an inch of drop be all that bad for the look you want? Seems simpler than swapping axles etc etc.
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
30,639
Reaction score
28,942
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
I talked with a few guys yesterday and may just either narrow the rear and or try and find a 3/4 ton rear end.

I greatly appreciate everyone’s knowledge

Don't bother with a 3/4 ton rear axle unless it's free. A rear from a 1 ton (single rear wheel) truck will bolt right in without having to relocate the spring perches and shock mounts.
 

newbie17

Member
Joined
Jan 14, 2019
Posts
40
Reaction score
9
Location
tx
First Name
bob
Truck Year
1987
Truck Model
R30
Engine Size
5.7 tbi
No offense, but---YUK!!
 

Android04

Junior Member
Joined
Sep 22, 2020
Posts
16
Reaction score
21
Location
Louisville, KY
First Name
Andrew
Truck Year
1985
Truck Model
C30
Engine Size
400 SBC
No offense, but---YUK!!
If you have to say "No Offense" then why post? I'll never understand that mentality.

Best thing about our hobby is we build them for ourselves not for everyone else.

Don't bother with a 3/4 ton rear axle unless it's free. A rear from a 1 ton (single rear wheel) truck will bolt right in without having to relocate the spring perches and shock mounts.

That's exactly what I did. I got a SRW and I'm swapping on DRW C&C Hubs this week it should be on the road. Thanks for all the help everyone.
 

Big Chip

Full Access Member
Joined
Oct 19, 2017
Posts
4,656
Reaction score
6,736
Location
Michigan
First Name
Kevin
Truck Year
1979
Truck Model
C35
Engine Size
454
No offense, but---YUK!!
...says the guy with the ****** bag yellow turd. A little advice: don't be a dick and things will go a lot easier for you.
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
30,639
Reaction score
28,942
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
If you have to say "No Offense" then why post? I'll never understand that mentality.

Best thing about our hobby is we build them for ourselves not for everyone else.



That's exactly what I did. I got a SRW and I'm swapping on DRW C&C Hubs this week it should be on the road. Thanks for all the help everyone.
Do you even need the DRW hubs? Still not enough clearance with the SRW hubs? Take any pictures showing the fitment differences?
 

bucket

Super Moderator
Staff member
Super Moderator
Joined
Aug 3, 2010
Posts
30,639
Reaction score
28,942
Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
...says the guy with the ****** bag yellow turd. A little advice: don't be a dick and things will go a lot easier for you.
Man, we can't even say *********?

Hey! .....I like yellow trucks too :rofl:
 

Forum statistics

Threads
44,426
Posts
957,656
Members
36,788
Latest member
GMack923
Top