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Old 09-18-2020, 02:23 PM   #51
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Originally Posted by culberro View Post
Jeep Dana 30 gearsets will only fit a 1030 diff. 1031 gearsets are available, but they're $600-800 plus shipping from Europe.
The Dana-Spicer gearsets are made in India, and have worked very well for us in race cars. The USA Standard Gear and Yukon gear sets are.. made in the USA. I had a USA gearset go soft in a race car, no 1000 mile break in. So I can't really fault it. The Dana-Spicer gearsets got even less of a break in and were completely fine.
Looked into the Standard Gear and Yukon stuff... I can buy two axels for that money. lol... Me being a thrifty and cheap I'm just going to buy an axel with the 3.31 gear, install a TrueTrac, and swap the axels.


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Originally Posted by mikep View Post
Yes, and probably. But 7/9 series axle housings do not bolt up in a 240.
I figured as much.

For clarification... there are no 240s with a 3.31 gear set in a 1031 axel? As far as I know the 3.31 gears were only available on older 240s with a 1030.

So If I call up Chapmans and say "hey, I want 240 axel with a 3.31:1 final gear ratio" I will receive a 1030 axel that will accept a TrueTrac, and my speedo cable?

3.31/1031 were only available on 7/9 series cars, correct?

I'm a double check, triple check kind of person.
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Old 09-18-2020, 02:28 PM   #52
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No, the later 240 rear axles are 1031. I don't know when the change over occurs. It is probably around 1985 when the rear axle had the tone ring added to the carrier.
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Old 09-18-2020, 03:19 PM   #53
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No, the later 240 rear axles are 1031. I don't know when the change over occurs. It is probably around 1985 when the rear axle had the tone ring added to the carrier.
No to what question?

I reread this page... I guess I missed the part about a 2031/3.31 on the V6 260 cars.

https://people.physics.anu.edu.au/~a...volvo_dana.htm

So the question remains.

I have a 1981 with a 1030/3.73 and a mechanical speedo cable.

Both a 1030 and a 1031 will accept a TrueTrac, and my mechanical speedo cable will hook-up no problem to a 1031?

Got to make it easier on the guys at the yard. lol

Thanks
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Old 09-18-2020, 03:23 PM   #54
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I have a 1981 with a 1030/3.73 and a mechanical speedo cable.

Both a 1030 and a 1031 will accept a TrueTrac, and my mechanical speedo cable will hook-up no problem to a 1031?
Since the speedo cable attaches to the transmission, the choice of axle housing is irrelevant.

If you had a later electronic speedo which reads from a tone ring on the rear gear, then your choice of axle housing would matter.
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Old 09-18-2020, 03:27 PM   #55
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No to these statements. Both are incorrect.

"For clarification... there are no 240s with a 3.31 gear set in a 1031 axel? As far as I know the 3.31 gears were only available on older 240s with a 1030."

Somewhere around 1985 Volvo went to the 1031 axle in a 240. All US market manual trans equipped 240s run a 3.31 ring and pinion set from 1983-1993. The nice thing about running a 1031 is that the 1041 gear sets fit it.
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Old 09-18-2020, 06:33 PM   #56
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Originally Posted by 2manyturbos View Post
No to these statements. Both are incorrect.

"For clarification... there are no 240s with a 3.31 gear set in a 1031 axel? As far as I know the 3.31 gears were only available on older 240s with a 1030."

Somewhere around 1985 Volvo went to the 1031 axle in a 240. All US market manual trans equipped 240s run a 3.31 ring and pinion set from 1983-1993. The nice thing about running a 1031 is that the 1041 gear sets fit it.
Good to know.

I'm more familiar with "modular" Japanese cars where almost everything fits everything else.
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Old 09-18-2020, 07:27 PM   #57
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Have to give one side's axle-shaft a slight haircut if installing 1041 G80 in 240s except the all of like 2? 92-93 240s that came with the G80 as an option

Cold saw/lathe/zircon disc depending how (un)scrupulous/low budget you are?

For V8 slow brutal torque, as volvo did with the 164 OE (1031), wouldn't use any 1030s/non-OE metal, but that's just me.
Not like Volvo OE is some god ordained thing either, just the guys wanted it to last the warranty/equipped the more powerful cars somewhat thoughtfully given cost constraints/avoiding being sued/recalls at all?
Probably wouldn't have gone to the expense for 1031 as early as the late 60s otherwise on a lower budget/disposable/limited mass production passenger car?

That said, they probably had that in the junkpile from the 6-cylinder / off road stuff 1969+?
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Old 09-19-2020, 06:45 PM   #58
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If you don’t want to cut the axle, get a right side abs axle- fits fine with 1031/G80
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Old 09-20-2020, 02:39 PM   #59
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If you donít want to cut the axle, get a right side abs axle- fits fine with 1031/G80
Going with a TrueTrac
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Old 09-21-2020, 12:25 PM   #60
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No, the later 240 rear axles are 1031. I don't know when the change over occurs. It is probably around 1985 when the rear axle had the tone ring added to the carrier.
Sounds about right.
I pulled a 1031 out of a 1985 recently. Pretty sure the 83 out back has a 1030. No clue on 84.
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Old 09-21-2020, 09:53 PM   #61
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3.73 with a T56-0.5 6th. I could probably go 3.90 or 4.11. My car does 1500 rpm at 70
That is what I am thinking for my '88 744, LS1/t56, 3.73, 225/50/16.

6th lugs a bit unless I'm cruising 80+
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Old 09-21-2020, 11:39 PM   #62
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3.73 with a T56-0.5 6th. I could probably go 3.90 or 4.11. My car does 1500 rpm at 70
Same setup for me, LT1 motor. Probably closer to 2000 rpm at 70.
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Old 09-22-2020, 12:12 AM   #63
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Man... all this LS talk makes me want and LS.

Still can’t believe what a dog the 5.0 is past 4,900rpm in stock form. Ford really choked these motors... I can love with less power just to hear that classic 5.0L flowmaster soundtrack!
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Old 09-22-2020, 02:10 AM   #64
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Man... all this LS talk makes me want and LS.

Still canít believe what a dog the 5.0 is past 4,900rpm in stock form. Ford really choked these motors... I can love with less power just to hear that classic 5.0L flowmaster soundtrack!
The stock 5.0 cams are terrible. Itís like having an M cam in a b230f.
Toss in anything else and itíll be a a much more rev happy engine. Mine currently shoots right up to the 7500 redline without any issues.
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Old 09-25-2020, 01:48 AM   #65
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Well... it looks like I can’t find a 3.31 axle locally. Still amazed at the cost of an aftermarket gear and pinion. Been thinking about a 8.8 conversation but, I already bought the LSD and invested in rims and tires. lol.

I guess my next option is to buy a 1031 axle with any ratio from a 240, along with a 1031 axle with 3.31 from a 740 and mix and match... or ask the guys at Chapman’s very nicely to swap the carriers .

After that... I may have to go stateside where freight will cost me the same amount as buying two axles here in Canada.

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Old 09-25-2020, 07:12 AM   #66
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Same setup for me, LT1 motor. Probably closer to 2000 rpm at 70.
I have 215-35/18 tires, so that makes it a little taller final drive ratio.
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Old 09-25-2020, 08:23 AM   #67
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Originally Posted by BeaverMeat View Post
Well... it looks like I canít find a 3.31 axle locally. Still amazed at the cost of an aftermarket gear and pinion. Been thinking about a 8.8 conversation but, I already bought the LSD and invested in rims and tires. lol.

I guess my next option is to buy a 1031 axle with any ratio from a 240, along with a 1031 axle with 3.31 from a 740 and mix and match... or ask the guys at Chapmanís very nicely to swap the carriers .

After that... I may have to go stateside where freight will cost me the same amount as buying two axles here in Canada.
I can ask Mark in Vancouver if he has anything or a lead on one.
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Old 09-25-2020, 12:02 PM   #68
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I can ask Mark in Vancouver if he has anything or a lead on one.
I’m starting to think a 3.31 final may be a bit rare on a 240 in Canada. Will have to start looking at 260s. I’m under the impression all 260 PRV cars have a 1031.

Who would be the premier Volvo wrecker in Washington state or Oregon?

I’m taking it that a carrier/ring gear/pinion from a 740 1031 will for a 240 1031?

As you can tell I’m persistent. lol

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Old 09-25-2020, 01:35 PM   #69
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I have 2-3 1031 rear axle assemblies. All of them are 3.73 ratio. I think they are all late model ABS axles with the 48 tooth tone ring in them.

Here is a table of the rear axle ratios used in 7-9 series. Other than the 960, I have never encountered a 3.31 gear set in a 7-9 series car.

https://www.brickboard.com/FAQ/700-9...AxleRatioTable
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Old 09-25-2020, 02:28 PM   #70
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I know of a good 3.31 1031 244 diff sitting in a shop near Olympia Wa if you wanted to drive down.
There just has to be something closer.
Have you tried the Volvo Owners Of the PNW Facebook group? There’s also a PNW volvo classified group on FB as well.
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Old 09-25-2020, 02:44 PM   #71
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I know of a good 3.31 1031 244 diff sitting in a shop near Olympia Wa if you wanted to drive down.
There just has to be something closer.
Have you tried the Volvo Owners Of the PNW Facebook group? Thereís also a PNW volvo classified group on FB as well.
If the price is right Iíll ship it. To be honest itís no cheaper to drive. Will cost $75 USD both ways for the ferry plus fuel, food (Iníníout burger!) and my wife will want to shop. lol. The exchange rate isnít too bad right now.

Plus the border is still closed... too many vocal Karens wanting to keep the borders closed to ďTrumpís AmericaĒ.
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Old 09-25-2020, 03:01 PM   #72
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I know of a good 3.31 1031 244 diff sitting in a shop near Olympia Wa if you wanted to drive down.
There just has to be something closer.
Have you tried the Volvo Owners Of the PNW Facebook group? Thereís also a PNW volvo classified group on FB as well.
If there is something closer, it's probably a huge chunk of rust. The Canadians come down here to buy cars that are actually mostly still comprised of steel and aluminum.
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Old 09-25-2020, 11:38 PM   #73
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If there is something closer, it's probably a huge chunk of rust. The Canadians come down here to buy cars that are actually mostly still comprised of steel and aluminum.
Cars on the Island arenít too bad. Everything from the Midwest to the east is pure rust. Iíd be looking down in Arizona, but many ďSnowbirdsĒ arenít going south this year.
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Old 09-28-2020, 12:02 PM   #74
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Other than the 960, I have never encountered a 3.31 gear set in a 7-9 series car.

https://www.brickboard.com/FAQ/700-9...AxleRatioTable
89-90 740 GLE B234F with M46, not listed on that table, will have a 3.31 axle.

Good luck finding one of those, though.

I think the easiest would probably be a 960-I wagon, 92 to 94, with solid axle. Unless the gear sets can also be swapped out of the IRS differentials in the sedans and late 960/x90 platform?
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Old 09-28-2020, 02:36 PM   #75
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89-90 740 GLE B234F with M46, not listed on that table, will have a 3.31 axle.

Good luck finding one of those, though.

I think the easiest would probably be a 960-I wagon, 92 to 94, with solid axle. Unless the gear sets can also be swapped out of the IRS differentials in the sedans and late 960/x90 platform?
Or, it can have a 3.54. I had a 1990 740 GLE I parted out that had the 3.54 rear axle and M46.
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