Should I go bigger u-joints

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.

D

D-Rock

Junior Member
Joined
Aug 7, 2020
Posts
6
Reaction score
3
Location
Lebanon, Oregon
First Name
Derrick
Truck Year
1979
Truck Model
K20
Engine Size
350
I have a 79 long bed that I'm rebuilding and I'm wondering if I need to go with bigger u-joints when I put it together. It has a 14 bolt ff and a Dana 60 front. 37 inch tires. I will be running 4.56 gears with Eaton Trutracs in both. I'm putting a big block in it with around 600hp, th400 and a NP205. Will the 1350 in the rear and 1310 in the front be enough or should I upgrade to 1410? I have to have new drivelines built anyway so if I need to go bigger now is the time. Just looking for opinions.
 
nvrenuf

nvrenuf

Full Access Member
Joined
Jul 30, 2010
Posts
1,981
Reaction score
2,522
Location
Mobile, Al.
First Name
John
Truck Year
1991
Truck Model
K5
Engine Size
454
I put all 1410’s in my Blazer, fork weak links! lol

That said, I ran 1350’s in my old truck with 44’s and never had an issue (4spd and auto).
 
D

Don-T

Full Access Member
Joined
Jul 28, 2022
Posts
65
Reaction score
66
Location
Vermont
First Name
Don
Truck Year
1973
Truck Model
K10
Engine Size
383
With that setup I would surely use 1410 joints front and rear.
 
R

Ricko1966

Full Access Member
Joined
Apr 11, 2017
Posts
5,600
Reaction score
9,118
Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
Here's a reason I wouldn’t,I learned a long time ago with performance automotive,there has to be a weak link. I pick cheap easy weak links. If you have enough traction and beat on it hard enough something has to break. A Ujoint is a lot cheaper than a diff.
 
Last edited:
nvrenuf

nvrenuf

Full Access Member
Joined
Jul 30, 2010
Posts
1,981
Reaction score
2,522
Location
Mobile, Al.
First Name
John
Truck Year
1991
Truck Model
K5
Engine Size
454
I don’t agree with the weak link theory, over build it to begin with and that’s not a problem.
 
R

Ricko1966

Full Access Member
Joined
Apr 11, 2017
Posts
5,600
Reaction score
9,118
Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
nvrenuf said:
I don’t agree with the weak link theory, over build it to begin with and that’s not a problem.
Click to expand...
There is always a weak link,no matter how you build something. Build it so it doesn't have enough power or build it with limited traction. But something always has to be the weak link.
 
D

D-Rock

Junior Member
Joined
Aug 7, 2020
Posts
6
Reaction score
3
Location
Lebanon, Oregon
First Name
Derrick
Truck Year
1979
Truck Model
K20
Engine Size
350
My weak link right now if I go with 1410 u-joints is the locking hubs on the front axle. They are MM 35 spline Dana 70 hubs. If I have something break on the rear end I probably deserve it. I also should have mentioned that I'm running Yukon chromoly axles with 35 spline outers in the Dana 60 front.
 
You must log in or register to reply here.

Similar threads

MidneightReider
'90 R2500 U-Joints
Replies
2
Views
334
MidneightReider
MidneightReider
A
What locker shall I go for?
2 3 4
Replies
58
Views
4K
59840Surfer
59840Surfer
kenneth1669
Should I replace?
Replies
9
Views
1K
dragstews
dragstews
Big red square
Front end grinding when hard accelerating
Replies
12
Views
975
Big red square
Big red square
K
Ball Joints Too Tight
Replies
2
Views
988
CalSgt
C

Latest posts

Forum statistics

Threads
44,416
Posts
957,115
Members
36,752
Latest member
78 squarebody
Top