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Re: Called the junkyard about a 14 bolt [Re: Fred T] #1286196 Mon Nov 05 2018 01:35 PM
Joined: May 2005
Posts: 9,115
G
Grigg Offline
.
1/2" difference on one side is probably not an issue, also better to skip spacers if possible.


1951 GMC 250 in the Project Journals
1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-
Re: Called the junkyard about a 14 bolt [Re: Fred T] #1286208 Mon Nov 05 2018 03:51 PM
Joined: May 2005
Posts: 9,115
G
Grigg Offline
.
Originally Posted by Fred T
...One thing that I am looking for is a listing of widths. With the popularity of the 14 bolt I believe such a page exists.

Yes, this resource, linked early in my thread about the 14 bolt swap. Lots of good info but some questions left unanswered, and some measurements listed differ slightly from my own measurements.
http://www.pirate4x4.com/tech/billavista/14b_bible/


1951 GMC 250 in the Project Journals
1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-
Re: Called the junkyard about a 14 bolt [Re: Fred T] #1286528 Wed Nov 07 2018 11:39 PM
Joined: Jun 2000
Posts: 2,773
F
Fred T Offline OP
Shop Shark
Went to a friendlier yard today. There are no yards in the area with 3.42 gears. He found some in the surrounding states, but at a cost of $600 minimum plus shipping he didn't recommend them. There 3 in the area with 3.73 gears, priced $375-400. Definitely time to go scrounging the local ads. I had printed out the chart from https://www.roundforge.com/articles/14-bolt-axles-differences-between-srw-drw-and-cc . It gave him something to look up. After selling everything that wasn't nailed down to China, they are finally getting some vehicles back in stock. But with the area economy just now starting to grow, demand for used parts is still high. Many yards are still bare, parting out cars as soon as they cross the scale, and selling the parts while they are still warm.


Fred
52 3600
69 C-10
Re: Called the junkyard about a 14 bolt [Re: Fred T] #1286555 Thu Nov 08 2018 03:06 AM
Joined: May 2005
Posts: 9,115
G
Grigg Offline
.
I’ve bought a few, think $250 is most paid for a real clean one from under a little used RV.
Lots of 4.56, some 4.10, and 3.73 is quite hard to find, I did find one to try.
Any faster gears seems better to buy new than hunt used unless extra lucky.


1951 GMC 250 in the Project Journals
1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-
Re: Called the junkyard about a 14 bolt [Re: Fred T] #1286683 Fri Nov 09 2018 03:39 AM
Joined: Jun 2000
Posts: 2,773
F
Fred T Offline OP
Shop Shark
I looked at new gears. They come in 3.42 and 3.21. I think I need counseling. drive


Fred
52 3600
69 C-10
Re: Called the junkyard about a 14 bolt [Re: Fred T] #1286709 Fri Nov 09 2018 12:23 PM
Joined: May 2005
Posts: 9,115
G
Grigg Offline
.
Don’t get to excited about fast gears without better brakes and more power.
What do you have for an engine?

My seat of the pants feeling is a 235 or 228 in a 1 ton is good with 4.10, and depending on location, driving style, and what you haul or not then 3.73 might be OK. After that probably need more engine and pretty sure more modern brakes would be appreciated.


1951 GMC 250 in the Project Journals
1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-
Re: Called the junkyard about a 14 bolt [Re: Grigg] #1288321 Wed Nov 21 2018 07:52 PM
Joined: Jun 2000
Posts: 2,773
F
Fred T Offline OP
Shop Shark
Originally Posted by Grigg
Don’t get to excited about fast gears without better brakes and more power.
What do you have for an engine?

My seat of the pants feeling is a 235 or 228 in a 1 ton is good with 4.10, and depending on location, driving style, and what you haul or not then 3.73 might be OK. After that probably need more engine and pretty sure more modern brakes would be appreciated.


Grigg - 235 with a 3/4 race cam, polished and shaved heads, Pertronix. Stock intake, carb, exhaust. It has just enough rumble to notice with a good ear. I have had it turning 4,500 rpm at 100 mph. Timed by my son, the speedo was pegged at 90. I have hauled some heavy load, but am now osing a walker, so the truck's primary work load is to the lumber yard.

My reason for the change is brakes. My 52 has Huck, and I need drums. Last time I checked used drums were $75, no guarantee they could be turned. I had another HO52 from a 69, thought I could swap the brakes & hub. But I found the 69 axle has an extra inch from the backing plate to the axle end. Was considering having the housings cut, but decided to go with the 14 bolt.


Fred
52 3600
69 C-10
Re: Called the junkyard about a 14 bolt [Re: Fred T] #1288403 Thu Nov 22 2018 01:25 PM
Joined: Jun 2005
Posts: 154
W
whateverpratt Offline
Shop Shark
Originally Posted by Fred T
I have had it turning 4,500 rpm at 100 mph. Timed by my son, the speedo was pegged at 90.

big_eek


'66 c10 rust bucket, 350 nv4500 stock bellhousing, '85 c30 front suspension, h072 rear axle with 3/4 ton rear coil springs
'67 cj5 225 oddfire motor, time for disc brake conversion, offset rear dana 44, intermediate pedals and steering upgrade
'48 3804 frame and bed + '52 6400 cab and front clip + 4bt, need to put them together
Re: Called the junkyard about a 14 bolt [Re: Fred T] #1288508 Fri Nov 23 2018 12:09 PM
Joined: Jun 2000
Posts: 2,773
F
Fred T Offline OP
Shop Shark
I found an error in the chart from
www.roundforge.com/articles/14-bolt-axles-differences-between-srw-drw-and-cc
Using that, I ordered a 14 bolt, 8 lug, full float, SRW from an 04 Silverado 2500 pickup, should be 65" according to the chart. Actual width was 69". That cost me shipping both ways. frown


Fred
52 3600
69 C-10
Re: Called the junkyard about a 14 bolt [Re: Fred T] #1288516 Fri Nov 23 2018 01:43 PM
Joined: May 2005
Posts: 9,115
G
Grigg Offline
.
Your mistake may have been on the year model. The information might be right for a 14 bolt, now old, but not for the modern AAM axle (also kind of a 14 bolt..)


1951 GMC 250 in the Project Journals
1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-
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