Hello, i was looking at replacing the 3rd Member on my 1973 F100.
the Tag
Line 1: WDM-BY4 7JD
Line 2: 75 9 3 5or9 1 B
the rearend ID here http://www.fordification.com/tech/rearends_ford03.htm
says the following.
Ford F100 Pickup '77-'79
Ford F150 Pickup '78-'79 2.75 9 in NL 28
Could this not be the original 3rd Member ? if so, what would be compatible ?
I may have found it, http://www.fordification.net/tech/vin_axle-rr.htm shows that VIN tag and its 17j
Thank you for your help.
Tag - 3rd Member: 1973 F100
Moderators: FORDification, 70_F100
-
SemperFi
- New Member
- Posts: 17
- Joined: Sat Aug 13, 2016 4:40 pm
Tag - 3rd Member: 1973 F100
You do not have the required permissions to view the files attached to this post.
-
DuckRyder
- Moderator
- Posts: 4925
- Joined: Mon Jul 19, 2004 3:04 pm
- Location: Scruffy City
- Contact:
Re: Tag - 3rd Member: 1973 F100
Actually I don't see BY4 on that list... BV4 yep, BY2 yep, BY4 nope...
Robert
1972 F100 Ranger XLT (445/C6/9” 3.50 Truetrac)
"An unarmed man can only flee from evil, and evil is not overcome by fleeing from it." -- Jeff Cooper
1972 F100 Ranger XLT (445/C6/9” 3.50 Truetrac)
"An unarmed man can only flee from evil, and evil is not overcome by fleeing from it." -- Jeff Cooper
-
sargentrs
- 100% FORDified!
- Posts: 9866
- Joined: Fri Jun 22, 2007 9:30 am
- Location: Georgia, Jasper
Re: Tag - 3rd Member: 1973 F100
I replaced the 8" in my '64 Fairlane with one from these guys http://www.quickperformance.com/Complet ... c_558.html Drop in replacement and fit and worked perfectly. Your choice of gear ratio and for under $500 for a standard open carrier you cant beat it. They build to order so might take a couple weeks depending on backlog.
Randy
1970 F100 Sport Custom Limited LWB, 302cid, 3 on the tree. NO A/C, NO P/S, NO P/B. Currently in 1000 pcs while rebuilding. Project thread: http://www.fordification.com/forum/view ... 22&t=59995 Plan: 351w, C4, LSD, pwr front disc, p/s, a/c, bucket seats, new interior and paint.
1987 F-150 XLT Lariat, 5.0/C6 auto.
1970 F100 Sport Custom Limited LWB, 302cid, 3 on the tree. NO A/C, NO P/S, NO P/B. Currently in 1000 pcs while rebuilding. Project thread: http://www.fordification.com/forum/view ... 22&t=59995 Plan: 351w, C4, LSD, pwr front disc, p/s, a/c, bucket seats, new interior and paint.
1987 F-150 XLT Lariat, 5.0/C6 auto.
-
harlan
- New Member
- Posts: 1
- Joined: Sat Sep 24, 2016 11:20 pm
Re: Tag - 3rd Member: 1973 F100
I also have a problem finding what third member I have in my '78 F-100. It is equipped from the factory with the 400M engine, C6 transmission.
The tag I found on the third member is 7HD DM 8J and 387B. No where in the listings for the Ford third member have I seen anything close to these number/letter combination.
Anybody have a clue what I have?
The tag I found on the third member is 7HD DM 8J and 387B. No where in the listings for the Ford third member have I seen anything close to these number/letter combination.
Anybody have a clue what I have?
-
Ranchero50
- Moderator
- Posts: 5799
- Joined: Wed Nov 08, 2006 7:02 pm
- Location: Maryland, Hagerstown
- Contact:
Re: Tag - 3rd Member: 1973 F100
I don't see where it matters a whole lot. Pop an axle out and verify the spline count and measure the yoke to make sure you get the correct U joint and go junkyard shopping for the axle ratio you want. If you want the same ration, pop yours out and check it first. 9" is taller than wide, 8" is wider than tall.
'70 F-350 CS Cummins 6BT 10klb truck 64k mile Bahama Blue
Contact me for CNC Dome Lamp Bezels and Ash Tray pulls.
Contact me for CNC Dome Lamp Bezels and Ash Tray pulls.