4.10 to 3.55 Axle Swap -- Will This Work - Ford Powerstroke Diesel Forum
 
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post #1 of 6 Old 12-01-2012, 07:51 AM Thread Starter
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4.10 to 3.55 Axle Swap -- Will This Work

I'm interested in going from 4.10s to 3.55s front and back. Found this Ford Sterling rear/rear springs on Craigs List. The rear is 10.25 sterling out of a '91 350 and the front is a TTB from a '97. Both have 3.55s.

I don't have the requisite skill to replace just the gears, and having someone else do the gears is cost prohibitive. So, is buying this axle set a good way to go? Can I just bolt the 350 rear axle and springs to my F250 hangers? I have a sagging left rear spring now, so doing it this way could kill two birds with one stone. Also, when I drive the truck, which is rarely, I'm usually towing a 6,500# Travel Trailer, so the sway bar that is included would be a nice addition.......I think.

Per my sig below, I have a 250 w/TTB front -- have not found a Dana 60 w/3.55s for the front yet, so I thought I'd do this in the interim.

Whatcha think? Thanks

1997 F250 CCSB w/126K miles. Bean Stage 1s, TW 6 Position Chip, Tymar Intake, 3" DP, 4" exhaust with cat delete, ZF5, SMF, LuK Clutch, 4:10s, ISSPRO Gauges, HPX
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post #2 of 6 Old 12-01-2012, 08:12 AM
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yes it will all work swaping both axles but with 3.55 gears towing sucks

95 f250 eclb 4x4 under construction
96 f250 eclb 4x4 rosewood stage 1 injectors, bully dog 6 position chip, 6637 air filter, idm mod
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post #3 of 6 Old 12-01-2012, 08:33 AM Thread Starter
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Originally Posted by erics diesel View Post
yes it will all work swaping both axles but with 3.55 gears towing sucks
Great thanks. What should I look for on these axles? Is the price about right? The rear dif cover is not an issue, as I'll replace it w/a high capacity/finned cover, or the one I pull off my existing rear axle. I'll also re-build the brakes. How about seals and stuff?

Yeah, I've read about towing with 3.55s and it seems that people feel strongly either way. With a ZF5, my supporting mods, and my relatively light load, I think it will be fine. However, I'm interested in avoiding a gear ratio war on this thread.

1997 F250 CCSB w/126K miles. Bean Stage 1s, TW 6 Position Chip, Tymar Intake, 3" DP, 4" exhaust with cat delete, ZF5, SMF, LuK Clutch, 4:10s, ISSPRO Gauges, HPX
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post #4 of 6 Old 12-02-2012, 02:01 AM
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With your stage 1s u should be fine with towing lightly to modertly.... just watch your egts. I think i will be happy with the switch, just that none of us are found with TTBs, i would just hold out and find a d60, put thats just me.

BTW.... thoes are terryknight's axles, he is a member on here and u can PM him about them. He is a great honest guy and u wont try to get over on ya, he will tell u everything they need and u should replace b4 installing.

I see your from GA.??? Thats a long trip for ya

FRANK THE TANK
DIY INTAKE - HYDRA CHIP - MARTY'S E-FUEL - 250/200s
05 AXLE SWAP 3.73 - 2.5" PURE PERF. LIFT COILS - FOX SHOCKS
BTS TRANS - TYMAR DOWN PIPE - 4" EXHAUST
Waiting To Be Installed... gtx4294r, studs, springs, HPOP?
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You are so smart Frank, I dont care what Terry says.

Last edited by ol_Blue97; 12-02-2012 at 02:06 AM.
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post #5 of 6 Old 12-02-2012, 08:04 AM
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like frank said those are my axles. you must be ed. i still have them let me know. i did cut the rear springs apart, but if you want the leafs to make/add to yours i will throw them in free

94.5 F250 Reg Cab 4x4 5 speed 4.10 276000 plus miles

97 F350 Crew Cab LB 4x4 5 speed 3.55 320000 plus miles (parts truck)



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post #6 of 6 Old 12-02-2012, 08:13 AM
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i have a good set of springs i could get down to u if he wants a set.

FRANK THE TANK
DIY INTAKE - HYDRA CHIP - MARTY'S E-FUEL - 250/200s
05 AXLE SWAP 3.73 - 2.5" PURE PERF. LIFT COILS - FOX SHOCKS
BTS TRANS - TYMAR DOWN PIPE - 4" EXHAUST
Waiting To Be Installed... gtx4294r, studs, springs, HPOP?
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You are so smart Frank, I dont care what Terry says.
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