Hi CRWLR,

Both the 74 and 79 CJ's are narrow track aren't they?

The axles should be the same width.

I did the exact swap, although in doing a SOA, I didn't use the original
perches, so I am not positive about the perch width.

--
JimG
80' CJ-7, 258 CID
35" BFG MT's on 15x10 Centerlines
4.56 D30-D44 SOA
D300 w/4:1 & Currie twin sticks
Warn 8000i w/dual batteries
LockRight F&R



"CRWLR" <beerman@yahoo.com> wrote in message
news:101g69o7mtb5t54@corp.supernews.com...
> The spring perches will be in a different place and the width of the axles
> will be different. I don't think either of these issues is a show stopper,
> but it will take some fabrication skills to make this work. I don't think
> the concerns you listed up are going to be a concern at all. Perhaps the
> brake lines will present a small hurdle because the angle that they
approach
> the cylinders may be different. In any case, the brake lines are the least
> of your worries.
>
>
> "aGraham" <aarongraham@mac.com.removeme> wrote in message
> news:aarongraham-34DD60.13510328012004@corp-radius.supernews.com...
> > Hi-
> > As some of you know I may be replacing the AMC 20 rear end in my '79 CJ
> > 7 with a Dana 44 from a '74 CJ5. I am now trying to put together a list
> > of needed parts for the swap to see if it is feasable. Here are some of
> > my questions:
> >
> > 1.) Drive shaft, I assume they use the same u-joint.
> > 2.) Brake lines, will my existing lines work?
> > 3.) Braking power, will I notice any difference? The new rear end has
> > new cylinders, pads and turned drums so I assume they will work better
> > than my (who knows how old) current ones.
> >
> > --
> > o_o_o_o
> > /| ,[_____],
> > |ŻŻŻL --O|||||||O-
> > ()_)Ż()_) ŻŻŻŻŻ )_)
>

 

Hi CRWLR,

Both the 74 and 79 CJ's are narrow track aren't they?

The axles should be the same width.

I did the exact swap, although in doing a SOA, I didn't use the original
perches, so I am not positive about the perch width.

--
JimG
80' CJ-7, 258 CID
35" BFG MT's on 15x10 Centerlines
4.56 D30-D44 SOA
D300 w/4:1 & Currie twin sticks
Warn 8000i w/dual batteries
LockRight F&R



"CRWLR" <beerman@yahoo.com> wrote in message
news:101g69o7mtb5t54@corp.supernews.com...
> The spring perches will be in a different place and the width of the axles
> will be different. I don't think either of these issues is a show stopper,
> but it will take some fabrication skills to make this work. I don't think
> the concerns you listed up are going to be a concern at all. Perhaps the
> brake lines will present a small hurdle because the angle that they
approach
> the cylinders may be different. In any case, the brake lines are the least
> of your worries.
>
>
> "aGraham" <aarongraham@mac.com.removeme> wrote in message
> news:aarongraham-34DD60.13510328012004@corp-radius.supernews.com...
> > Hi-
> > As some of you know I may be replacing the AMC 20 rear end in my '79 CJ
> > 7 with a Dana 44 from a '74 CJ5. I am now trying to put together a list
> > of needed parts for the swap to see if it is feasable. Here are some of
> > my questions:
> >
> > 1.) Drive shaft, I assume they use the same u-joint.
> > 2.) Brake lines, will my existing lines work?
> > 3.) Braking power, will I notice any difference? The new rear end has
> > new cylinders, pads and turned drums so I assume they will work better
> > than my (who knows how old) current ones.
> >
> > --
> > o_o_o_o
> > /| ,[_____],
> > |ŻŻŻL --O|||||||O-
> > ()_)Ż()_) ŻŻŻŻŻ )_)
>

 

Hi CRWLR,

Both the 74 and 79 CJ's are narrow track aren't they?

The axles should be the same width.

I did the exact swap, although in doing a SOA, I didn't use the original
perches, so I am not positive about the perch width.

--
JimG
80' CJ-7, 258 CID
35" BFG MT's on 15x10 Centerlines
4.56 D30-D44 SOA
D300 w/4:1 & Currie twin sticks
Warn 8000i w/dual batteries
LockRight F&R



"CRWLR" <beerman@yahoo.com> wrote in message
news:101g69o7mtb5t54@corp.supernews.com...
> The spring perches will be in a different place and the width of the axles
> will be different. I don't think either of these issues is a show stopper,
> but it will take some fabrication skills to make this work. I don't think
> the concerns you listed up are going to be a concern at all. Perhaps the
> brake lines will present a small hurdle because the angle that they
approach
> the cylinders may be different. In any case, the brake lines are the least
> of your worries.
>
>
> "aGraham" <aarongraham@mac.com.removeme> wrote in message
> news:aarongraham-34DD60.13510328012004@corp-radius.supernews.com...
> > Hi-
> > As some of you know I may be replacing the AMC 20 rear end in my '79 CJ
> > 7 with a Dana 44 from a '74 CJ5. I am now trying to put together a list
> > of needed parts for the swap to see if it is feasable. Here are some of
> > my questions:
> >
> > 1.) Drive shaft, I assume they use the same u-joint.
> > 2.) Brake lines, will my existing lines work?
> > 3.) Braking power, will I notice any difference? The new rear end has
> > new cylinders, pads and turned drums so I assume they will work better
> > than my (who knows how old) current ones.
> >
> > --
> > o_o_o_o
> > /| ,[_____],
> > |ŻŻŻL --O|||||||O-
> > ()_)Ż()_) ŻŻŻŻŻ )_)
>

 

1) I used the same drive shaft for a while (went to a longer one for the
SOA).
2) You probably want to change the brake lines out any way.
3) Some of the older 44's had 11" bakes (mine did), so theoretically you
should see better braking.

--
JimG
80' CJ-7, 258 CID
35" BFG MT's on 15x10 Centerlines
4.56 D30-D44 SOA
D300 w/4:1 & Currie twin sticks
Warn 8000i w/dual batteries
LockRight F&R



"aGraham" <aarongraham@mac.com.removeme> wrote in message
news:aarongraham-34DD60.13510328012004@corp-radius.supernews.com...
> Hi-
> As some of you know I may be replacing the AMC 20 rear end in my '79 CJ
> 7 with a Dana 44 from a '74 CJ5. I am now trying to put together a list
> of needed parts for the swap to see if it is feasable. Here are some of
> my questions:
>
> 1.) Drive shaft, I assume they use the same u-joint.
> 2.) Brake lines, will my existing lines work?
> 3.) Braking power, will I notice any difference? The new rear end has
> new cylinders, pads and turned drums so I assume they will work better
> than my (who knows how old) current ones.
>
> --
> o_o_o_o
> /| ,[_____],
> |ŻŻŻL --O|||||||O-
> ()_)Ż()_) ŻŻŻŻŻ )_)

 

1) I used the same drive shaft for a while (went to a longer one for the
SOA).
2) You probably want to change the brake lines out any way.
3) Some of the older 44's had 11" bakes (mine did), so theoretically you
should see better braking.

--
JimG
80' CJ-7, 258 CID
35" BFG MT's on 15x10 Centerlines
4.56 D30-D44 SOA
D300 w/4:1 & Currie twin sticks
Warn 8000i w/dual batteries
LockRight F&R



"aGraham" <aarongraham@mac.com.removeme> wrote in message
news:aarongraham-34DD60.13510328012004@corp-radius.supernews.com...
> Hi-
> As some of you know I may be replacing the AMC 20 rear end in my '79 CJ
> 7 with a Dana 44 from a '74 CJ5. I am now trying to put together a list
> of needed parts for the swap to see if it is feasable. Here are some of
> my questions:
>
> 1.) Drive shaft, I assume they use the same u-joint.
> 2.) Brake lines, will my existing lines work?
> 3.) Braking power, will I notice any difference? The new rear end has
> new cylinders, pads and turned drums so I assume they will work better
> than my (who knows how old) current ones.
>
> --
> o_o_o_o
> /| ,[_____],
> |ŻŻŻL --O|||||||O-
> ()_)Ż()_) ŻŻŻŻŻ )_)

 

1) I used the same drive shaft for a while (went to a longer one for the
SOA).
2) You probably want to change the brake lines out any way.
3) Some of the older 44's had 11" bakes (mine did), so theoretically you
should see better braking.

--
JimG
80' CJ-7, 258 CID
35" BFG MT's on 15x10 Centerlines
4.56 D30-D44 SOA
D300 w/4:1 & Currie twin sticks
Warn 8000i w/dual batteries
LockRight F&R



"aGraham" <aarongraham@mac.com.removeme> wrote in message
news:aarongraham-34DD60.13510328012004@corp-radius.supernews.com...
> Hi-
> As some of you know I may be replacing the AMC 20 rear end in my '79 CJ
> 7 with a Dana 44 from a '74 CJ5. I am now trying to put together a list
> of needed parts for the swap to see if it is feasable. Here are some of
> my questions:
>
> 1.) Drive shaft, I assume they use the same u-joint.
> 2.) Brake lines, will my existing lines work?
> 3.) Braking power, will I notice any difference? The new rear end has
> new cylinders, pads and turned drums so I assume they will work better
> than my (who knows how old) current ones.
>
> --
> o_o_o_o
> /| ,[_____],
> |ŻŻŻL --O|||||||O-
> ()_)Ż()_) ŻŻŻŻŻ )_)

 

Be careful with the brake issue. If the shoe/drum size is the same and the
wheel cylinder diameter is the same, should be okay. A larger brake on the
new axle could cause the back wheels to lock before the front resulting in a
loss of stability. If you've ever driven, or tried to drive a front wheel
drive car with studded tires just on the front on icy roads you'll know what
I mean. Applying the brakes for a seemingly normal stop and the next thing
you know the rear of the car is passing you. Brake size and master cylinder
and proportioning valves are all pretty carefully matched.
Steve
"JimG" <jimg@cj7_2muchspam.com> wrote in message
news:101g8g16jqvofa9@corp.supernews.com...
> 1) I used the same drive shaft for a while (went to a longer one for the
> SOA).
> 2) You probably want to change the brake lines out any way.
> 3) Some of the older 44's had 11" bakes (mine did), so theoretically you
> should see better braking.
>
> --
> JimG
> 80' CJ-7, 258 CID
> 35" BFG MT's on 15x10 Centerlines
> 4.56 D30-D44 SOA
> D300 w/4:1 & Currie twin sticks
> Warn 8000i w/dual batteries
> LockRight F&R
>
>
>
> "aGraham" <aarongraham@mac.com.removeme> wrote in message
> news:aarongraham-34DD60.13510328012004@corp-radius.supernews.com...
> > Hi-
> > As some of you know I may be replacing the AMC 20 rear end in my '79 CJ
> > 7 with a Dana 44 from a '74 CJ5. I am now trying to put together a list
> > of needed parts for the swap to see if it is feasable. Here are some of
> > my questions:
> >
> > 1.) Drive shaft, I assume they use the same u-joint.
> > 2.) Brake lines, will my existing lines work?
> > 3.) Braking power, will I notice any difference? The new rear end has
> > new cylinders, pads and turned drums so I assume they will work better
> > than my (who knows how old) current ones.
> >
> > --
> > o_o_o_o
> > /| ,[_____],
> > |ŻŻŻL --O|||||||O-
> > ()_)Ż()_) ŻŻŻŻŻ )_)
>
>

 

Be careful with the brake issue. If the shoe/drum size is the same and the
wheel cylinder diameter is the same, should be okay. A larger brake on the
new axle could cause the back wheels to lock before the front resulting in a
loss of stability. If you've ever driven, or tried to drive a front wheel
drive car with studded tires just on the front on icy roads you'll know what
I mean. Applying the brakes for a seemingly normal stop and the next thing
you know the rear of the car is passing you. Brake size and master cylinder
and proportioning valves are all pretty carefully matched.
Steve
"JimG" <jimg@cj7_2muchspam.com> wrote in message
news:101g8g16jqvofa9@corp.supernews.com...
> 1) I used the same drive shaft for a while (went to a longer one for the
> SOA).
> 2) You probably want to change the brake lines out any way.
> 3) Some of the older 44's had 11" bakes (mine did), so theoretically you
> should see better braking.
>
> --
> JimG
> 80' CJ-7, 258 CID
> 35" BFG MT's on 15x10 Centerlines
> 4.56 D30-D44 SOA
> D300 w/4:1 & Currie twin sticks
> Warn 8000i w/dual batteries
> LockRight F&R
>
>
>
> "aGraham" <aarongraham@mac.com.removeme> wrote in message
> news:aarongraham-34DD60.13510328012004@corp-radius.supernews.com...
> > Hi-
> > As some of you know I may be replacing the AMC 20 rear end in my '79 CJ
> > 7 with a Dana 44 from a '74 CJ5. I am now trying to put together a list
> > of needed parts for the swap to see if it is feasable. Here are some of
> > my questions:
> >
> > 1.) Drive shaft, I assume they use the same u-joint.
> > 2.) Brake lines, will my existing lines work?
> > 3.) Braking power, will I notice any difference? The new rear end has
> > new cylinders, pads and turned drums so I assume they will work better
> > than my (who knows how old) current ones.
> >
> > --
> > o_o_o_o
> > /| ,[_____],
> > |ŻŻŻL --O|||||||O-
> > ()_)Ż()_) ŻŻŻŻŻ )_)
>
>

 

Be careful with the brake issue. If the shoe/drum size is the same and the
wheel cylinder diameter is the same, should be okay. A larger brake on the
new axle could cause the back wheels to lock before the front resulting in a
loss of stability. If you've ever driven, or tried to drive a front wheel
drive car with studded tires just on the front on icy roads you'll know what
I mean. Applying the brakes for a seemingly normal stop and the next thing
you know the rear of the car is passing you. Brake size and master cylinder
and proportioning valves are all pretty carefully matched.
Steve
"JimG" <jimg@cj7_2muchspam.com> wrote in message
news:101g8g16jqvofa9@corp.supernews.com...
> 1) I used the same drive shaft for a while (went to a longer one for the
> SOA).
> 2) You probably want to change the brake lines out any way.
> 3) Some of the older 44's had 11" bakes (mine did), so theoretically you
> should see better braking.
>
> --
> JimG
> 80' CJ-7, 258 CID
> 35" BFG MT's on 15x10 Centerlines
> 4.56 D30-D44 SOA
> D300 w/4:1 & Currie twin sticks
> Warn 8000i w/dual batteries
> LockRight F&R
>
>
>
> "aGraham" <aarongraham@mac.com.removeme> wrote in message
> news:aarongraham-34DD60.13510328012004@corp-radius.supernews.com...
> > Hi-
> > As some of you know I may be replacing the AMC 20 rear end in my '79 CJ
> > 7 with a Dana 44 from a '74 CJ5. I am now trying to put together a list
> > of needed parts for the swap to see if it is feasable. Here are some of
> > my questions:
> >
> > 1.) Drive shaft, I assume they use the same u-joint.
> > 2.) Brake lines, will my existing lines work?
> > 3.) Braking power, will I notice any difference? The new rear end has
> > new cylinders, pads and turned drums so I assume they will work better
> > than my (who knows how old) current ones.
> >
> > --
> > o_o_o_o
> > /| ,[_____],
> > |ŻŻŻL --O|||||||O-
> > ()_)Ż()_) ŻŻŻŻŻ )_)
>
>