home register FAQ memberlist calendar

Go Back   Turbobricks Forums > Mechanical > performance & suspension

Reply
 
Thread Tools Display Modes
Old 03-15-2017, 01:35 AM   #1
keatonml53
Board Member
 
Join Date: Aug 2016
Location: Rexburg, Idaho
Default Stock rear axle upgrades

I've talked to a guy that has a v8 swapped 940, but he doesn't have a ford 8.8 rear axle, but instead an upgraded volvo axle with 4.10 gears. Where can I find a 4.10 posi for a Volvo rear axle, and how much of a cost difference would it be versus getting an entire ford 8.8?
keatonml53 is offline   Reply With Quote
Old 03-15-2017, 06:17 AM   #2
ryan350ci
Board Member
 
ryan350ci's Avatar
 
Join Date: Apr 2013
Location: Sumter, SC
Default

Your best bet for a 4:10 R&P is to post in the wanted section, somebody most likely has a set they will sell. Many Volvos had G80 lockers in them, even install Detroit Truetrac units. Another option for open diffs is to use a Richmond/PowerTrax locker, but they are fairly noisy and the locking can be quite brutal if you don't know what you are doing.

As far as the 8.8, it could be relatively cheap or ridiculously expensive. They require some modification to fit, and if you can do it all yourself, this would be the way to go. If you have to get the housing cut and brackets moved at a shop, it could cost you dearly. There are plenty of threads on how to do this modification in this forum, so do yourself a favor and read up on it first.
__________________
1977 264GL - 383/700r4
1983 242 - (Just a shell for now)
1989 765 Turbo/IC - B230FT (Daily)
1995 944 Turbo - B230FT (Down for upgrades)
2007 S60 2.5T AWD (Wifes Daily)
1985 300zx - V8 Swap in planning stage
1989 S-10 - V8 Swap next project
1993 F150 - Straight Six
1992 Ranger 4x4 - 2.9 V6 Manual

Feedback Thread:
http://forums.turbobricks.com/showth...24#post5254924
ryan350ci is offline   Reply With Quote
Old 03-15-2017, 12:55 PM   #3
culberro
Ronald Culberbone
 
culberro's Avatar
 
Join Date: Feb 2010
Location: Portland, OR
Default

Are you running a V8? What tire size in the rear? Manual or Auto? 4.10 is kind of steep. 3.73 with a 0.73od and stock sized tires is pretty buzzy for freeway driving as well. 3.53 or 3.31 would be nice for a lot of freeway driving.
You can probably find an entire axle with 4.10 gears for the same price as a set of used gears.
Trutrac 588 is the one you want for the rear, if you want to go that route. https://www.summitracing.com/parts/dtl-912a588
I'd avoid a G80 as it's just crushing disappointment if you actually want something that is smooth.
culberro is online now   Reply With Quote
Old 03-15-2017, 09:38 PM   #4
keatonml53
Board Member
 
Join Date: Aug 2016
Location: Rexburg, Idaho
Default

Quote:
Originally Posted by culberro View Post
Are you running a V8? What tire size in the rear? Manual or Auto? 4.10 is kind of steep. 3.73 with a 0.73od and stock sized tires is pretty buzzy for freeway driving as well. 3.53 or 3.31 would be nice for a lot of freeway driving.
You can probably find an entire axle with 4.10 gears for the same price as a set of used gears.
Trutrac 588 is the one you want for the rear, if you want to go that route. https://www.summitracing.com/parts/dtl-912a588
I'd avoid a G80 as it's just crushing disappointment if you actually want something that is smooth.
I wasn't particularly meaning a 4.10, I was just wondering where I could acquire an upgrade for the stock rear axle.
keatonml53 is offline   Reply With Quote
Old 03-16-2017, 02:40 AM   #5
culberro
Ronald Culberbone
 
culberro's Avatar
 
Join Date: Feb 2010
Location: Portland, OR
Default

Drop in solutions:
Trutrac, Wavetrac, Gripper, Sellholm, G80.
culberro is online now   Reply With Quote
Old 03-16-2017, 09:02 AM   #6
Joe_Diesel
Board Member
 
Joe_Diesel's Avatar
 
Join Date: Nov 2015
Location: Central NY
Default

Where can you purchase a trutrac online as well as other rearend rebuild parts?
Joe_Diesel is offline   Reply With Quote
Old 03-16-2017, 09:25 AM   #7
roccodart440
Board Member
 
Join Date: Feb 2017
Default

Quote:
Originally Posted by culberro View Post
Are you running a V8? What tire size in the rear? Manual or Auto? 4.10 is kind of steep. 3.73 with a 0.73od and stock sized tires is pretty buzzy for freeway driving as well. 3.53 or 3.31 would be nice for a lot of freeway driving.
You can probably find an entire axle with 4.10 gears for the same price as a set of used gears.
Trutrac 588 is the one you want for the rear, if you want to go that route. https://www.summitracing.com/parts/dtl-912a588
I'd avoid a G80 as it's just crushing disappointment if you actually want something that is smooth.
Depends on how tall of a tire you run.

Check this out. This is friends website that helps you calculate where you want to be.
https://reillymotorsports.com/store2...alculator.html

When I doubt go 1 step taller in your ratio.
roccodart440 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -4. The time now is 07:54 PM.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.