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  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

8" Third Member Repair

  • Thread starter Thread starter sentipede
  • Start date Start date Feb 14, 2007
S

sentipede

New Member
Dec 27, 2004
57
0
0
Feb 14, 2007
#1
  • Feb 14, 2007
  • #1
8" Center Section Repair/Replace

Hello,
I have 289 A code fastback (Auto). The rear end started to howl at certain speeds, so I believe it is time to repair or replace the diffs. I figured this would be as good a time as any to modify gearing for better acceleration and add a posi. I was thinking that it may be cheaper and easier to purchase a replacement third member. The following two are links to Ebay auctions selling them. The questions are...

1) What gearing would be best suited for a daily driver with better acceleration
2) What is involved in the installation and how much would it cost to have done
3) Which of the two links look better....I am open for other suggestions

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=280081332899

or

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=230089613275\

Thanks in advace!
:SNSign:
 

geostang351

Member
Mar 30, 2005
946
0
17
Danb., CT
Feb 15, 2007
#2
  • Feb 15, 2007
  • #2
sentipede said:
Hello,
I have 289 A code fastback (Auto). The rear end started to howl at certain speeds, so I believe it is time to repair or replace the diffs. I figured this would be as good a time as any to modify gearing for better acceleration and add a posi. I was thinking that it may be cheaper and easier to purchase a replacement third member. The following two are links to Ebay auctions selling them. The questions are...

1) What gearing would be best suited for a daily driver with better acceleration
2) What is involved in the installation and how much would it cost to have done
3) Which of the two links look better....I am open for other suggestions

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=280081332899

or

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=230089613275\

Thanks in advace!
:SNSign:
Click to expand...

I bought mine on ebay about 2 months ago from a guy who sells rearends about once a week and he will put the gears you want into it at end of the auction. Here is my bid link so you can see who he is if you need to contact him:
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&viewitem=&item=160064304055
 

jspagna1

Member
Jan 23, 2007
53
0
6
Connecticut
Feb 15, 2007
#3
  • Feb 15, 2007
  • #3
Answers to your questions:
#1 If your car is a daily driver, you may want to go with the 3:25's although I have 3:55's in mine(tough on the highway).

#2 If the diff's are shipped complete, you just take the old one out and put the new one in. Should'nt take much time/labor at all.

#3 Any of these look pretty good. I know Mustangs Plus is asking $995.00
 
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