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hddude
01-19-2010, 10:27 AM
what are good ones? thanx,,,,,,,,again!

USA1
01-19-2010, 10:35 AM
Spicer 1310 are the best for a stock 55-57 shaft, part # 153x I think. I run them in a BBC Camaro that weighs 3600 and runs in the 10s in the 1/4. A lot of driveshaft problem are related to poor geometry.

hddude
01-19-2010, 10:53 AM
ok, thanx, but do these have a zerk fitting? and who sells `em?

Rick_L
01-19-2010, 10:55 AM
Get the kind with no drilling for a grease fitting.

Or if yours have a grease fitting, install the u-joint so that the fitting area is in compression under acceleration, not tension.

Of course the best thing you could do is change your yokes and driveshaft to use 1350 series u-joints.

hddude
01-19-2010, 11:03 AM
ok, about 400 hp, `57 rear, eaton posi, 3;70 gear. do you suggest going to the 1350?

NickP
01-19-2010, 11:13 AM
ok, about 400 hp, `57 rear, eaton posi, 3;70 gear. do you suggest going to the 1350?


What is the difference between 1310, 1330 and 1350 Series?
The "series" of a driveshaft or universal joint is determined by the actual dimensions of the u-joint. While the front and rear u-joint can be of two different sizes the shaft is only as strong as the smaller one. The 1310 series u-joint measures approximately 3 1/4 inches wide. The 1330 and 1350 both measure approximately 3 5/8 wide. The 1310 and 1330 series can have cap diameters of 1 1/16 and/or 1 1/8 inch or a combination of both sizes. The 1350 series has a cap diameter of 1 3/16 inch and the body and journals are bigger than the 1310 or 1330. Remember 1350 is almost never found in production car driveshafts.

When is it necessary to upgrade to 1350 series?
It is always a good choice to upgrade to the 1350 series components whenever your application is used for racing or with high horsepower and street use. Stock driveshafts were designed to handle a modest amount of horsepower. If your application has more than 400 horsepower then its time to consider a new shaft.


http://www.dennysdriveshaft.com/index.html

Chevynut
01-19-2010, 11:40 AM
I don't understand why people talk about "high horsepower" when torque is what breaks drivetrain parts. If I have an engine that puts out 600 ft-lb of torque at 3500 RPM it's putting out 400 HP at that point. If I have a small engine that puts out 350 ft-lb at 8000 RPM, it's putting out 533 HP.

Which do you think is more likely to break a u-joint? ;)

I put 1350's on each end of my aluminum Denny's driveshaft. :)

Rick_L
01-19-2010, 12:29 PM
"Which do you think is more likely to break a u-joint?"

I'd guess the small block if it's a race car since the small block will probably have to have a higher starting line rpm - so we're talking about converting low torque high rpm energy to high torque low rpm energy - the hit will be harder.

You probably didn't expect that answer.

But, that's splitting hairs. And that's also assuming traction. If you need it, you need it.

Shua57
01-19-2010, 12:50 PM
When Denny's made mine, i had them put in 1350's. It was a heavy duty driveshaft anyways. You can get Spicer parts from Jegs, driveshaft makers and you use to be able to get them from NAPA but I think they stopped selling them. You can get them from some truck and 4x4 parts sites as well.
Josh

USA1
01-19-2010, 06:13 PM
ok, about 400 hp, `57 rear, eaton posi, 3;70 gear. do you suggest going to the 1350?

I doubt that you can even buy a yole for a stock rear that accepts a 1350 joint. It would be a waste of money if you could anyway, a 1310 joint was used on Z28s from 67-74, BBC Chevelles untill 72 and all 409 cars. I know people who have run Super Gas with 1310s. Bottom line they will take at least as much abuse probably more than a 55-57 rear end.

xenavise
01-19-2010, 08:17 PM
i ran 1310 u-joints on my 56 chevy drag car lasted about 30 launches
but i run a manual transmission and leave around 5000
I HAD A NEW DRIVE SHAFT BUILT WITH SPICER 1350 JOINTS CHANGED THE YOKE ON MY 12 BOLT REAR END NO MORE DRIVESHAFT PROBLEMS
now everthing else breaks trans clutch ring &pinion axles my bank account

laddyboy
01-19-2010, 09:17 PM
i ran 1310 u-joints on my 56 chevy drag car lasted about 30 launches
but i run a manual transmission and leave around 5000
I HAD A NEW DRIVE SHAFT BUILT WITH SPICER 1350 JOINTS CHANGED THE YOKE ON MY 12 BOLT REAR END NO MORE DRIVESHAFT PROBLEMS
now everthing else breaks trans clutch ring &pinion axles my bank account


I guess there has to be a weak link somewhere.
At least U joints are not as expensive as the rest of the drivetrain.
______________
Mike

BigBoyzToyz
01-19-2010, 09:45 PM
I use to occasionally bracket race a C3 big block Corvette that ran 12.20's. U joints were a nightmare, they have 6. When I changed to a non-greaseable U joint they stopped breaking. I think they were Spicer brand.