1031 or 1041 for turbo 940

hessam69 · 07-16-2012, 10:59 PM

I have a 940 which I will be +t ing soon, it has a 4.10 1031 single spinner in it, should I swap it for a 1041 G80 with 3.73? Which would be quicker for quarter mile times in a turbo 940 with an AW71 and 15G? Which would get quicker 60 foot times? I would also do the locker mod if I got the G80.

Magnum TE · 07-17-2012, 12:07 AM

to make things easy on you I'd swap the ring gear onto the G80. Otherwise you'll need to setup the rear end with the 3.73 pinion, and unless you know what you're doing it's not nearly as easy a bolt in as swapping the ring gear onto the diff.

I think overall the 3.73 will be faster, you might be able to stay out of OD that, and less traction issues than with the 4.10

But I really don't know **** about **** for drag racing.

Check out a gear calc and see when you'd be shifting at what speed/rpm for the 2 rear end gears. There's a thread here with the AW71 ratios.

hessam69 · 07-17-2012, 05:56 AM

Thanks I was thinking swap it to the G80. Even with the 4.10 gears it won't go into overdrive down the quarter mile. I would swap the whole assembly to the G80 since I have it already. Bolt out/lockermod/bolt in

woodywhat · 07-19-2012, 04:26 PM

go down to a jeep wrecker and look at the dana 30 diff centers. if your lucky youll get a limited 3.91 or locker if youre only racing in streight drags. upgreade to dana 35,40,44 is worth consider. as is hilux lsd axle conversion {4.5pcd/decent h/brake} keep us sticky...

hessam69 · 07-19-2012, 08:16 PM

I would rather keep it all volvo nice and simple since I have the G80 locker already and it will bolt in easily and I won't have to muck about with changing centres, that's mostly what people are using with turbos I have found

940guy · 07-21-2012, 09:44 PM

i ran 12.7 with a 15g and a 3.73 i would cross the line right at the end of 3rd gear at redline and that worked out nice.

hessam69 · 07-22-2012, 03:41 AM

Looks like I'll need the 3.73 G80 since running 12 seconds with a 4.10 means going into overdrive, thanks for the good info

07-16-2012, 10:59 PM	#1
hessam69 Board Member Join Date: Jun 2009 Location: Sydney, Australia	1031 or 1041 for turbo 940 I have a 940 which I will be +t ing soon, it has a 4.10 1031 single spinner in it, should I swap it for a 1041 G80 with 3.73? Which would be quicker for quarter mile times in a turbo 940 with an AW71 and 15G? Which would get quicker 60 foot times? I would also do the locker mod if I got the G80. __________________ 94 940 90 240 90 240

07-17-2012, 12:07 AM	#2
Magnum TE Broke another B230F+T Join Date: Nov 2002 Location: Santa Rosa Ca	to make things easy on you I'd swap the ring gear onto the G80. Otherwise you'll need to setup the rear end with the 3.73 pinion, and unless you know what you're doing it's not nearly as easy a bolt in as swapping the ring gear onto the diff. I think overall the 3.73 will be faster, you might be able to stay out of OD that, and less traction issues than with the 4.10 But I really don't know ** about ** for drag racing. Check out a gear calc and see when you'd be shifting at what speed/rpm for the 2 rear end gears. There's a thread here with the AW71 ratios. __________________ Goldie Bricks - '92 940T : B230F+T MSnS-e... The Gray Car - '92 940T : stock drive-train DD I have some cool stuff done to my cars The Gold Car: Owner since 2001 B230F+T MS1nS-E / Ford T5, 1pc DL ebay FMIC / Mechman Alternator T3 60/.63 ATP WG / 63#/hr CFI injectors Full 3" Turbo to tail / IPD TP Cam IPD bars / Coilovers Koni Dampners / Lower Chassis brace NIW-T3 camber plates / Full poly front end Full Kaplhenke Rear end -Torque rods -PH Bar -Subframe Daily Driver

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07-17-2012, 05:56 AM	#3
hessam69 Board Member Join Date: Jun 2009 Location: Sydney, Australia	Thanks I was thinking swap it to the G80. Even with the 4.10 gears it won't go into overdrive down the quarter mile. I would swap the whole assembly to the G80 since I have it already. Bolt out/lockermod/bolt in

07-19-2012, 04:26 PM	#4
woodywhat Board Member Join Date: Mar 2011 Location: victoria australia	go down to a jeep wrecker and look at the dana 30 diff centers. if your lucky youll get a limited 3.91 or locker if youre only racing in streight drags. upgreade to dana 35,40,44 is worth consider. as is hilux lsd axle conversion {4.5pcd/decent h/brake} keep us sticky...

07-19-2012, 08:16 PM	#5
hessam69 Board Member Join Date: Jun 2009 Location: Sydney, Australia	I would rather keep it all volvo nice and simple since I have the G80 locker already and it will bolt in easily and I won't have to muck about with changing centres, that's mostly what people are using with turbos I have found

07-22-2012, 03:41 AM	#7
hessam69 Board Member Join Date: Jun 2009 Location: Sydney, Australia	Looks like I'll need the 3.73 G80 since running 12 seconds with a 4.10 means going into overdrive, thanks for the good info