FasTimeSS

iTrader: (47)

Where the drive shaft meets the rear end pinon. On the Drive shaft side i have a 1350 because its a big after market driveshaft. well its bolting up to a factory ten bolt which is either a 1310 or 3r. anyways i searched and came across the nappa part number 420-0447 or napa 447, but people were using this for the opposite setup as me ( 12 bolt pinon has the 1350, and they were using the stock Driveshaft with a 1310/3r)

tittan1500

iTrader: (8)

it will work, both ways one side is 1310 and the other is 1350

Busy Mopper

iTrader: (4)

do u have the exact pn?

Busy Mopper

iTrader: (4)

i think the napa 447 is a 1350 to a 3r conversion u joint. someone correct me if im wrong

sportfan

iTrader: (1)

Spicer #5-447X (1350 to 1350)
Spicer #5-460X (1310 to 1350)
Neapco #2-1153 (3R to 1350)

FasTimeSS

iTrader: (47)

exactly.... Neapco #2-1153 (3R to 1350)
napa part number for that matches to the 447

Supers

You need the Neapco 2-1153, which is 3r x 1350

ahhwataday

iTrader: (7)

O HELL YEA, I need that. Thanks for the reminder

FasTimeSS

iTrader: (47)

for any body wondering the GM setup for our cars is a 3r NOT A 1310

Supers

I thought you seen the post i stuck in here

Black 99 Bird

iTrader: (31)

Size wise, what is the difference between a 3r and 1310?

Senator

iTrader: (1)

For clarification - for a stock driveshaft with the Moser 12 bolt 1350 yoke:

This is a 3R or 1344 to 1350 conversion.

Moser offers the Neapco 2-1153 U-Joint

The following parts will also fit, (and likely others)

NAPA 447
Moog 447
Precision 447


Hope this helps the folks out there with the stock d/s and 1350 yoke.

Regards,

Darden

PS I found the Moog 447 at Advance Auto for 29.00 or so. About the best price I have found.

dailydriver

I know this is an ANCIENT thread, but i found this out the hard way when I tried to install one of the Summit alloy drive shafts with a stock 10 bolt pinion yoke.

Summit, and I believe Inland Empire ship ALL of their 3rd/4th gen f body drive shafts with a straight 1310 u-joint (BOTH sides).
This WILL NOT work, as you need a 3R to 1310 conversion joint to make it work.