U joints for 74 Dart Swinger 318

[Larsen74Dart]

Hey all,
Need some direction on what u joint I need to get for my 74 Swinger with 318, and where can I get one... or two?
Car, engine and trans all stock and all original.

 

[Lefty71]

Rockauto is probably the cheapest route to get something decent. Summit or Jegs too. The problems with all those avenues tho is they wont differentiate the exact fit for your model......youll need to know which is which.

I would suggest a call to Dr Diff on the phone, and tell him what car you have and the details you do know (stock). He will hook you up, and the pricing is still very good.

 

[Larsen74Dart]

Rockauto is probably the cheapest route to get something decent. Summit or Jegs too. The problems with all those avenues tho is they wont differentiate the exact fit for your model......youll need to know which is which.

I would suggest a call to Dr Diff on the phone, and tell him what car you have and the details you do know (stock). He will hook you up, and the pricing is still very good.

Thank you. I started looking on classic Ind. They have 3 options - 7290, 7260 and 1350. $13 or $28. Just not sure which is the right one.

 

[318willrun]

O'reilly's, Autozone, Napa, Rockauto, Jegs, Summit, Dr Diff, or any other auto parts store or drive line repair shop.

 

[Larsen74Dart]

O'reilly's, Autozone, Napa, Rockauto, Jegs, Summit, Dr Diff, or any other auto parts store or drive line repair shop.

The mechanic doing the work checked all the local stores. None had the right one. But he never told me which one was the right one....

 

[318willrun]

The mechanic doing the work checked all the local stores. None had the right one. But he never told me which one was the right one....

Moog 315G ??? I'm pretty sure you'd have the small u joints. somebody will confirm, but seems 315G by Moog is correct...

 

[michiganpat]

99% they're 7260's, and just about any parts store will have some. I got new moog's for my duster at advance auto parts.

 

[dano]

Be sure the snap rings are installed on the inside of each cap or you'll have a bad day.

 

[abodyjoe]

local places should be able to get them. napa may even have them in stock.

 

[abodyjoe]

1974 DODGE DART 5.2L 318cid V8 Universal Joint | Shop Now at RockAuto

 

[Vaanth]

Hey all,
Need some direction on what u joint I need to get for my 74 Swinger with 318, and where can I get one... or two?
Car, engine and trans all stock and all original.

View attachment 1716453876

Although Chrysler universal joint usage can sometimes seem indefinite, all 1974 A-bodies, regardless of engine or transmission, were equipped with 3.25" diameter driveshafts, of various lengths, and type 7260 universal joints on both ends.

Your 1974 Dart Swinger with a 318 was equipped with two 7260 universal joints, Chrysler part number 3780250. If nothing has changed since 1974, it should still have the 7260 size. 7260 is a reference designation and is also used to identify the universal joint size.

Replacement universal joints are readily available. The following listing includes original Chrysler numbers and aftermarket replacements. Note that some of the listed companies/numbers are no longer active, or have been absorbed by others. NOS parts might be found, otherwise listed for reference.

Brand	Numbers	Notes
Chrysler	4384514 4364400 3780250 2298908 1752624	Later numbers supersede earlier numbers
Mopar	D207
Precision/Moog	315G 317 (grease fitting in the cap)	Formerly Torque Manufacturing.
Dana Spicer	5-1306X 5-3228X (grease fitting in cap) 5-789X	5-789X is a heavy duty non-drilled, without grease fitting universal joint.
TRW	20030 20030P	Now Federal Mogul. “P” denotes performance or heavy-duty version.
Federal Mogul	20030P
McQuay-Norris	U1306 U0119
Parts Master	315GPM 315PM
Raybestos	51306X
PTC	PT266
Meritor	CP1306X CP13061X	Formerly Rockwell.
Sealed Power	838-266
SKF	1-6301 UJ315G UJ246	UJ246 is a heavy duty version.
Carquest	1-6301
Neapco	1-6301
AMC	8126636	Also Chrysler J8126636.

---

Additional Information

7260 and 7290 are reference numbers, but not part numbers, for the smaller and larger cross and roller universal joints commonly used in most Chrysler passenger cars and light trucks from the late 1950s into the 1990s. A third type, the 1330 series, was used in Chrysler and Imperial vehicles with constant velocity joints and as a single joint in 1966-1967 GTX and R/T. The 1350 and 1410 series were used in some larger truck applications.

- The 7260 universal joints have a 2.125" yoke inner dimension with a 1.078" cap diameter.
- The 7290 universal joint has a 2.625" yoke inner dimension with a 1.125" cap diameter.

The following image shows the sizing at the driveshaft yoke:

7260 and 7290 yoke and universal joint sizing detail:

7260 Distance between retaining rings	G	2.125"
7260 Cap Outside Diameter	D	1.078"

7290 Distance between retaining rings	G	2.625"
7290 Cap Outside Diameter	D	1.125"

 

[H22A4]

Hey all,
Need some direction on what u joint I need to get for my 74 Swinger with 318, and where can I get one... or two?
Car, engine and trans all stock and all original.

View attachment 1716453876

WOW, nice looking Dart! Great photo!

What’s wrong with the existing u joints or are you proactively having them replaced? The rear leaf springs appear to have quite a sag too, is that on the list to replace too?

 

[Larsen74Dart]

Although Chrysler universal joint usage can sometimes seem indefinite, all 1974 A-bodies, regardless of engine or transmission, were equipped with 3.25" diameter driveshafts, of various lengths, and type 7260 universal joints on both ends.

Your 1974 Dart Swinger with a 318 was equipped with two 7260 universal joints, Chrysler part number 3780250. If nothing has changed since 1974, it should still have the 7260 size. 7260 is a reference designation and is also used to identify the universal joint size.

Replacement universal joints are readily available. The following listing includes original Chrysler numbers and aftermarket replacements. Note that some of the listed companies/numbers are no longer active, or have been absorbed by others. NOS parts might be found, otherwise listed for reference.

Brand	Numbers	Notes
Chrysler	4384514 4364400 3780250 2298908 1752624	Later numbers supersede earlier numbers
Mopar	D207
Precision/Moog	315G 317 (grease fitting in the cap)	Formerly Torque Manufacturing.
Dana Spicer	5-1306X 5-3228X (grease fitting in cap) 5-789X	5-789X is a heavy duty non-drilled, without grease fitting universal joint.
TRW	20030 20030P	Now Federal Mogul. “P” denotes performance or heavy-duty version.
Federal Mogul	20030P
McQuay-Norris	U1306 U0119
Parts Master	315GPM 315PM
Raybestos	51306X
PTC	PT266
Meritor	CP1306X CP13061X	Formerly Rockwell.
Sealed Power	838-266
SKF	1-6301 UJ315G UJ246	UJ246 is a heavy duty version.
Carquest	1-6301
Neapco	1-6301
AMC	8126636	Also Chrysler J8126636.

---

Additional Information

7260 and 7290 are reference numbers, but not part numbers, for the smaller and larger cross and roller universal joints commonly used in most Chrysler passenger cars and light trucks from the late 1950s into the 1990s. A third type, the 1330 series, was used in Chrysler and Imperial vehicles with constant velocity joints and as a single joint in 1966-1967 GTX and R/T. The 1350 and 1410 series were used in some larger truck applications.

- The 7260 universal joints have a 2.125" yoke inner dimension with a 1.078" cap diameter.
- The 7290 universal joint has a 2.625" yoke inner dimension with a 1.125" cap diameter.

The following image shows the sizing at the driveshaft yoke:
View attachment 1716454088

7260 and 7290 yoke and universal joint sizing detail:

View attachment 1716454176

7260 Distance between retaining rings	G	2.125"
7260 Cap Outside Diameter	D	1.078"

7290 Distance between retaining rings	G	2.625"
7290 Cap Outside Diameter	D	1.125"

Wow. Very thorough! Thank you. Learned more here than I did during all my college years. All 6 of them...

 

[Larsen74Dart]

WOW, nice looking Dart! Great photo!

What’s wrong with the existing u joints or are you proactively having them replaced? The rear leaf springs appear to have quite a sag too, is that on the list to replace too?

Had some random/intermittent rattling, knocking. Couldn't tell if it was exhaust pipe broken, brake hardware or bad u-joint.
Turned out to be u-joint. Mechanic DID have the right one, but did not initially fit. Cap was not completely seated. All good now.
And yes, it does seem to be sagging a bit. Not planning on doing anything with springs yet. Would prefer to sell it. We're looking to buy a house or property to build and need to get rid of the payment.