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3.07 LSD options?

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3.07 LSD options?

Postby Begle1 » Mon Sep 21, 2009 8:44 pm

What are the aftermarket options for a LSD for my 3.07 rear end?
1990 D-250 Regular Cab: Tweaked injection pump, built transmission, a cataclysmic charlie foxtrot of electronics, the most intense street-ran water injection system in the country, and some more unique stuff.
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Postby Philip » Tue Sep 22, 2009 5:59 am

The 3:07 axles use the same carriers as a 3:54 does. Any carrier from 3:54 to 4:56 will work in your axle.
93 W350 Club/cab w/duals, buckets & console, B&W flatbed, G56, 6 spd, 3:07 rears, gages, HX40/16, 4" exhaust, 6X.018 sticks, rear air ride suspension
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Postby Begle1 » Wed Sep 23, 2009 8:16 am

How many splines are our axles?

Will Detroits out of any D70 work for us?
1990 D-250 Regular Cab: Tweaked injection pump, built transmission, a cataclysmic charlie foxtrot of electronics, the most intense street-ran water injection system in the country, and some more unique stuff.
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Postby skilletky » Wed Sep 23, 2009 8:27 am

i know my d70 is 32 spline, and i think it is a d70u. the regular d 70s are 35 spline. i could be wrong and correct me if i am.
92 d350, arp's, orings, 150lb springs, 4200 gsk ,ground pin ,64/71/14 ,ddp inj's, ats manifold, tim's tubez, ats trans, FASS, locker, timing + a tooth, bcdd intake

2001 2wd rclb dually 5sp, smarty, Bluechip FMS, TS MVP, 57/75 twins, stainless diesel pipe kit, valair clutch, airdog 150, DFI SAC 7x.014's, cheap a$$ intake, ARP studs, oringed head, CPP 115# springs
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Postby Philip » Wed Sep 23, 2009 12:01 pm

The 3:07's are 35 spline most likely. Look at the axle hub. If it has wedge locks holding the alxe in. It is most likely a 35 spline. If it has bolts its a 32 spline.

I haven't seen a 3:07 axle with the bolts. All I have seen is the old style wedge locks.
93 W350 Club/cab w/duals, buckets & console, B&W flatbed, G56, 6 spd, 3:07 rears, gages, HX40/16, 4" exhaust, 6X.018 sticks, rear air ride suspension
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Postby Richie O » Wed Sep 23, 2009 4:34 pm

Philip wrote:The 3:07's are 35 spline most likely. Look at the axle hub. If it has wedge locks holding the alxe in. It is most likely a 35 spline. If it has bolts its a 32 spline.

I haven't seen a 3:07 axle with the bolts. All I have seen is the old style wedge locks.


Both of my 89s were wedge type. :)
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k
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