Notices
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

(Yet Another) Alternator Question

Thread Tools
 
Search this Thread
 
Old Dec 9, 2007 | 09:07 PM
  #1  
ozyran's Avatar
ozyran
Thread Starter
|
New User
Joined: Dec 2007
Posts: 19
Likes: 0
(Yet Another) Alternator Question

Hello everyone,
I'm brand new to the site and already I'm finding it very helpful. I just picked up a 1986 F250 Supercab, long bed 4x2 and she's running a 351W with the C6 tranny.
Yes, I have searched extensively on my question. I even tried Ford's VIN decoder with no success.
I've searched high and low with no luck. Where do I find out the output of my truck's alternator? I need to replace the belt, but I figure it would also be good to know in case my alternator ever goes out.
Thanks!
~oz
 
Reply
Old Dec 9, 2007 | 10:21 PM
  #2  
WA1986F-250's Avatar
WA1986F-250
Senior User
Joined: Jan 2005
Posts: 141
Likes: 1
I also have an 86 F250 Supercab, longbed 4x2 running the 351w and c6 tranny. Mine is a 70amp alternator which I believe is OEM spec. You should be able to swap it out for a higher output if need be, but anything the parts store sells for this setup should fit fine.
 
Reply
Old Dec 9, 2007 | 11:10 PM
  #3  
plowpusher's Avatar
plowpusher
Posting Guru
Joined: Sep 2003
Posts: 1,192
Likes: 1
From: lino lakes, mn
look on the case of the alternator it's usually stamped look by the long bolt thatb goes to the block
 
Reply
Old Dec 11, 2007 | 09:25 AM
  #4  
Ford_Eddie_Bauer's Avatar
Ford_Eddie_Bauer
Junior User
Joined: Feb 2004
Posts: 66
Likes: 0
I went threw the same thing with my Bronco, Just bring your old belt to a parts store. That way you can verify the size.
 
Reply
Old Dec 12, 2007 | 10:46 PM
  #5  
woodbutcher05's Avatar
woodbutcher05
Senior User
Joined: Sep 2006
Posts: 279
Likes: 0
From: LaFollette Tn
IIRC the factory stock rating is 40 amps.Most rebuilt alternators are 60.

Leo
 
Reply
Old Dec 13, 2007 | 04:23 AM
  #6  
ozyran's Avatar
ozyran
Thread Starter
|
New User
Joined: Dec 2007
Posts: 19
Likes: 0
Originally Posted by Ford_Eddie_Bauer
I went threw the same thing with my Bronco, Just bring your old belt to a parts store. That way you can verify the size.
I was actually hoping to avoid that but I may not have any other choice.

Thanks for the help everyone!
 
Reply




All times are GMT -5. The time now is 09:27 PM.

story-0
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-1
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-2
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-3
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-4
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-5
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-6
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-7
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-8
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-9
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE