Rear End Issues
Thread Starter
|
Freshman User
Joined: Nov 2003
Posts: 29
Likes: 0
From: Huntsville, AL
Rear End Issues
Okay, I know I have a rare bird that some folks seem to deny, but my '63 F250 unibody has the original 4.88 rear axle in it. Great! ...in case I want to pull down an old barn, but I'd like to be able to tow my little vintage camper down the road at speeds greater than 50 mph. Are there any rare birds out there that might know whether a lower ratio 'pumpkin' can be swapped out, or what it would take to reduce my rear end to something other than an elephant-tamer?
Thank You,
Eric
Thank You,
Eric
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 784
From: Simi Valley, CA
Originally Posted by Retiredfire
I like to know if could help me I have a 1961 F-100 unibody with code 11 for axle on the glove box door. And the code F for the tran. F10CK182275 VIN. number.
F10 = F100 2WD
C = 292 2V
K = Kansas City Assembly Plant
182275 = Assembled June 1961
11 = Ford 9 Inch / 3.70-1 / Non Limited Slip / 3300 lb. Rear Axle Capacity
F = Warner T-98 4 Speed
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 784
From: Simi Valley, CA
Originally Posted by AtypclEngr
Okay, I know I have a rare bird that some folks seem to deny, but my '63 F250 unibody has the original 4.88 rear axle in it. Great! ...in case I want to pull down an old barn, but I'd like to be able to tow my little vintage camper down the road at speeds greater than 50 mph. Are there any rare birds out there that might know whether a lower ratio 'pumpkin' can be swapped out, or what it would take to reduce my rear end to something other than an elephant-tamer?
Thank You,
Eric
Thank You,
Eric
The only rear axle for a 1963 F250 I could find with a 4.88-1 is the Limited Slip Spicer 60. There were other ratios available, but I need the code to verify what you have. There's no third member to swap (9" only), the parts all come out piece by piece through the inspection cover.
Last edited by NumberDummy; Nov 15, 2007 at 11:07 PM.
Thread Starter
|
Freshman User
Joined: Nov 2003
Posts: 29
Likes: 0
From: Huntsville, AL
Rear End Issue
Thank You,
The Warranty number is F25CK381988
Trans code F
Axle code B6
I looked these all up a good while back on my electronic shop manual from Detroit Iron, but please help me to verify what I have.
By the way, the original tag is STILL pinned under two rear end bolts:
CITT-BV
2393-4 12-62 4.88
Not many this old that are still as 'stock' as me' ole Belle,
Eric
The Warranty number is F25CK381988
Trans code F
Axle code B6
I looked these all up a good while back on my electronic shop manual from Detroit Iron, but please help me to verify what I have.
By the way, the original tag is STILL pinned under two rear end bolts:
CITT-BV
2393-4 12-62 4.88
Not many this old that are still as 'stock' as me' ole Belle,
Eric
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 784
From: Simi Valley, CA
Originally Posted by AtypclEngr
Thank You, The Warranty number is F25CK381988
Trans code F Axle code B6
I looked these all up a good while back on my electronic shop manual from Detroit Iron, but please help me to verify what I have.
By the way, the original tag is STILL pinned under two rear end bolts:
CITT-BV 2393-4 12-62 4.88 Not many this old that are still as 'stock' as me' ole Belle, Eric
Trans code F Axle code B6
I looked these all up a good while back on my electronic shop manual from Detroit Iron, but please help me to verify what I have.
By the way, the original tag is STILL pinned under two rear end bolts:
CITT-BV 2393-4 12-62 4.88 Not many this old that are still as 'stock' as me' ole Belle, Eric
C = 292 2V
K = Kansas City Assembly Plant
381988 = Assembled in February 1963
F = Warner T-98 4 Speed
B6 = Spicer (Dana) 60 / 4.88-1 / Limited Slip / 5200 lb. Rear Axle Capacity
C1TT-BV = see above
4-12-62 = April, 12, 1962 = Axle Build Date
Spicer 60 ratios available for F250's = 1961/72: 10 spline pinion gear = 4.10-1 / 4.56-1 / 4.88-1. In 1966, two further ratios were added: 3.54-1 and 3.73-1. These have a 29 spline pinion gear, so in order to use one in your truck, the companion flange will have to be changed to match.
1957/63 Ford Truck Parts Catalog ~ Spicer 60 LS ~ Section 40 ~ Rear Axle Parts List # 94. (this catalog is available on a CD: hipoparts.com)
Last edited by NumberDummy; Nov 17, 2007 at 12:24 AM.
Thread Starter
|
Freshman User
Joined: Nov 2003
Posts: 29
Likes: 0
From: Huntsville, AL
Rear End Issues
Thank you!
Can you confirm that I am reading correctly that gear ratios for original 10 spline pinion gear = 4.10-1 / 4.56-1 / 4.88-1 could be directly placed out, and the the later 3.54-1 and 3.73-1 with 29 spline pinion gear would need companion flange changed to match...?
Eric
Can you confirm that I am reading correctly that gear ratios for original 10 spline pinion gear = 4.10-1 / 4.56-1 / 4.88-1 could be directly placed out, and the the later 3.54-1 and 3.73-1 with 29 spline pinion gear would need companion flange changed to match...?
Eric
Trending Topics
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 784
From: Simi Valley, CA
Originally Posted by AtypclEngr
Thank you!
Can you confirm that I am reading correctly that gear ratios for original 10 spline pinion gear = 4.10-1 / 4.56-1 / 4.88-1 could be directly placed out, and the the later 3.54-1 and 3.73-1 with 29 spline pinion gear would need companion flange changed to match...?Eric
Can you confirm that I am reading correctly that gear ratios for original 10 spline pinion gear = 4.10-1 / 4.56-1 / 4.88-1 could be directly placed out, and the the later 3.54-1 and 3.73-1 with 29 spline pinion gear would need companion flange changed to match...?Eric
Last edited by NumberDummy; Nov 17, 2007 at 12:32 AM.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread Starter
|
Freshman User
Joined: Nov 2003
Posts: 29
Likes: 0
From: Huntsville, AL
Rear End Issue
Kewl. Thanks for your help.
Have to admit that I am a ho' to stock condition, and there can't be many slicks out there still alive running a 4.88, but I'm running about 10 mph too slow to be close to safe on the highway (10mph faster would still be 10mph slower than the speed limit on most highways 'round here).
Any dragsters out there looking for a 4.88???
Eric
Have to admit that I am a ho' to stock condition, and there can't be many slicks out there still alive running a 4.88, but I'm running about 10 mph too slow to be close to safe on the highway (10mph faster would still be 10mph slower than the speed limit on most highways 'round here).
Any dragsters out there looking for a 4.88???
Eric
Thread
Thread Starter
Forum
Replies
Last Post
F 250 6 liter
6.0L Power Stroke Diesel
5
Nov 15, 2010 08:42 PM
Eric1966
1961 - 1966 F-100 & Larger F-Series Trucks
7
Feb 27, 2006 04:52 PM