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Author
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Topic: 7.5 to 8.8 rearend swap and new gears
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Boss66
Gearhead Posts: 137
From: Tucson, AZ
Registered: Feb 2000
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posted 04-17-2001 10:53 PM
   
I have just about completed my rearend upgrade. I've installed 4.10 gears into a 8.8 rearend and installed it in place of the old 7.5. The only difference between the two rears is the 7.5 had traction bars, while the 8.8 has axle dampers. The 8.8 does not have a mounting location for the traction bars and the car does not have a mounting location for the axle dampers. Which option should I make work. I can probably get the mounting brackets at the junk yard for the axle dampers if I go in that direction. What do you all think is best.Later, Boss66
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SteveLaRiviere
Administrator Posts: 14622
From: Saco, Maine MCA # 47773
Registered: May 99
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posted 05-24-2001 02:56 PM
Damn! Looks like this was overlooked. Sorry, Boss.I don't believe the dampers work well in a performance application. Am I correct, fox fiends?  ------------------
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC {Wife's car...}
All Fords since 1977
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Boss66
Gearhead Posts: 137
From: Tucson, AZ
Registered: Feb 2000
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posted 05-24-2001 06:50 PM
Steve,
Thanks for the response. I have completed the swap several weeks(or months) ago. I did not use the traction bars (7.5 rear) or the axle dampners (8.8 rear). Seems to work fine. The gear swap went well also. I can go into details if anyone wants, but I ended up using the same shim thickness as came with the stock gears. The marking compound test showed a nice pattern and I have no unusual noise now that I'm driving the car. I was able to pull the pinion bearing with a puller I already had and I put the new one on by heating it and driving it on with a piece of pvc pipe. I did the entire rear and gear swap for less than $300. The 4.10 gears are great. Don't fear the gear.Thanks, Boss66 PS I've added a 2001 Cobra to my collection.
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ragtopjr
Gearhead Posts: 1531
From: Saskatoon, Saskatchewan, Canada.
Registered: Oct 2000
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posted 05-25-2001 02:57 AM
I am unsure of what you mean by these axle dampers?
What kind of traction bars are they?
Dont fear the gear is very good way of life!
Congrats on the cobra ------------------
Ed
Heart mods:Trick High flow titanium valve ported & polished Listen close: "tic tic tic" No folks thats not a noisy lifter thats the sound of big flow!
1984 5.0L LX Conv 3600 lbs 13.41 at 101.89 SIR
http://ragtopjr.hypermart.net/
http://ragtop-racing.stangnet.com/
http://mbmustangs.tripod.com/index.htm
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Gearhead
Gearhead Posts: 873
From: Look up... waaaaay up!! No, no, no... not that far.
Registered: Mar 2000
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posted 05-25-2001 11:51 AM
quote:
Originally posted by ragtopjr:
I am unsure of what you mean by these axle dampers?
He is probably referring to the quad shocks Ed! Ian
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ragtopjr
Gearhead Posts: 1531
From: Saskatoon, Saskatchewan, Canada.
Registered: Oct 2000
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posted 05-26-2001 02:00 AM
quote:
He is probably referring to the quad shocks Ed! Ian
Oh  I forgot about those 
I found the Quad shocks did stop a little wheel hop but I would not say the traction was ever very good with quads btu they were better then nothing.
I would go with the traction bars Did you remove the weight on the front of the diff?
If you did not......DO IT as soon as you stray from the stock gear ratio it no longer serves any purpose
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Ed
Heart mods:Trick High flow titanium valve ported & polished Listen close: "tic tic tic" No folks thats not a noisy lifter thats the sound of big flow!
1984 5.0L LX Conv 3600 lbs 13.41 at 101.89 SIR
http://ragtopjr.hypermart.net/
http://ragtop-racing.stangnet.com/
http://mbmustangs.tripod.com/index.htm
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