Should I go bigger u-joints

D-Rock · Oct 31, 2024

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 · Oct 31, 2024

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).

Don-T · Monday at 8:54 PM

With that setup I would surely use 1410 joints front and rear.

Ricko1966 · Monday at 9:03 PM

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.

nvrenuf · Monday at 9:48 PM

I don’t agree with the weak link theory, over build it to begin with and that’s not a problem.

Ricko1966 · Tuesday at 2:29 PM

nvrenuf said:
I don’t agree with the weak link theory, over build it to begin with and that’s not a problem.

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.

Should I go bigger u-joints

D-Rock

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Don-T

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Ricko1966

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