9 inch pumpkin swap
Thread Starter
|
New User
Joined: Sep 2004
Posts: 10
Likes: 0
9 inch pumpkin swap
i have two 9 inch rearend axles one is geared way low and the other is 3.00. both of them i believe are 28 spline. i would like to know if there would be anything in the way of just switching the two pumpkins?
Posting Guru
Joined: Mar 2004
Posts: 1,099
Likes: 0
From: Destin/Ft. Walton Beach,
Well, you don't really exchange the pumpkin. You can exchange the carrier assembly though. (sometimes called a chunk) If they are both set up for a 28 spline, there is no problem.
Super Moderator
Joined: Apr 2004
Posts: 34,491
Likes: 2,805
Drop out carrier often called pumpkin.
Welcome to the easy swap world of "The Poor Man's Quick Change".
Clean the housing out, make sure your driveshaft yoke matches, make sure your carrier has an oil fill if the housing doesn't and a new gasket and if you are particular, new copper washers and away you go.
Welcome to the easy swap world of "The Poor Man's Quick Change".
Clean the housing out, make sure your driveshaft yoke matches, make sure your carrier has an oil fill if the housing doesn't and a new gasket and if you are particular, new copper washers and away you go.
Elder User
Joined: Nov 2004
Posts: 517
Likes: 0
I want to do a 3rd member swap on my 9" also to get from 2.47:1 to a 3.50:1 to match my front on my 77 f-150 4x4 351m/c-6. Is there a do-it-yourself instuction floating around here somewhere?
Oh and the 9" is out of a 82'F-150 thats where the 2.47:1 came from(I spun the tire 20x and counted drive shaft turns)
Oh and the 9" is out of a 82'F-150 thats where the 2.47:1 came from(I spun the tire 20x and counted drive shaft turns)
Super Moderator
Joined: Apr 2004
Posts: 34,491
Likes: 2,805
So someone put a 2.47 rear diff in a 4x4 where the front is 3.50?
And now you have a "new" 3.50 to put in the rear?
If so, and you are confident the splines match, the swap out of this is pretty easy.
--block the front wheels REAL GOOD BOTH SIDES
--lift rear and place on secure blocks
--remove wheels and brakes
--remove axles
--remove driveshaft
--remove the nuts holding the carrier to the housing.
--place a small jack under the pinion part of the carrier case and lift slightly to break it loose. Be sure you have a pan to catch the oil.
--clean out the housing including the axle tubes.
--have new bearings installed on the axles if you want.
--get new gasket for case to housing and for the bearing retainers on the ends of the axles, and new copper washers for the case holding nuts.
--reinstall--make sure you have an oil fill on the case if there is not one on the housing.
--sidestep clutch at 6000 rpm to test.
And now you have a "new" 3.50 to put in the rear?
If so, and you are confident the splines match, the swap out of this is pretty easy.
--block the front wheels REAL GOOD BOTH SIDES
--lift rear and place on secure blocks
--remove wheels and brakes
--remove axles
--remove driveshaft
--remove the nuts holding the carrier to the housing.
--place a small jack under the pinion part of the carrier case and lift slightly to break it loose. Be sure you have a pan to catch the oil.
--clean out the housing including the axle tubes.
--have new bearings installed on the axles if you want.
--get new gasket for case to housing and for the bearing retainers on the ends of the axles, and new copper washers for the case holding nuts.
--reinstall--make sure you have an oil fill on the case if there is not one on the housing.
--sidestep clutch at 6000 rpm to test.
Elder User
Joined: Nov 2004
Posts: 517
Likes: 0
Originally Posted by 85e150six4mtod
So someone put a 2.47 rear diff in a 4x4 where the front is 3.50?
And now you have a "new" 3.50 to put in the rear?
--sidestep clutch at 6000 rpm to test.
Last edited by yield2s; Jan 3, 2005 at 09:54 PM.
Posting Guru
Joined: Jul 2001
Posts: 2,119
Likes: 2
From: Southern New Hampshire
Just make sure it isnt a 9 3/8" pumpkin, they were used in some trucks as well as the big cars with 460's. Looks like 9" but a hair bigger.
Most were real tall gears in the 2's
BTW Ive been around that rear since they were new, always were called pumpkins or chucks.
Most were real tall gears in the 2's
BTW Ive been around that rear since they were new, always were called pumpkins or chucks.
Thread
Thread Starter
Forum
Replies
Last Post
fifty-two_f1
1961 - 1966 F-100 & Larger F-Series Trucks
19
Jul 10, 2017 03:04 PM
dsmit412
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
2
Mar 27, 2016 10:25 PM
Notmeofficer
Large Truck
4
Jul 8, 2011 08:17 AM
fontime
1948 - 1956 F1, F100 & Larger F-Series Trucks
18
Nov 28, 2010 12:34 PM
60F100
Clutch, Transmission, Differential, Axle & Transfer Case
6
May 2, 2009 09:22 AM
