Chromo D44 vs Stock D60? - Pirate4x4.Com : 4x4 and Off-Road Forum
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Old 02-04-2012, 09:22 AM   #1 (permalink)
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Chromo D44 vs Stock D60?

I have a 78 F250 SC. The front is a Dana 44 w/open carrier converted to 3-link coil spring and cross over steering. Current tires are 35" duratraks. I may go with 37" later on.

The rear is D60 w/detroit locker.
I am planning on adding a selectable locker to the front in the near future.

Here's my dilema..
Question: What really is the strength difference between chromolly D44 axle shafts and a stock dana 60?

The answer to the above question will help me decide if the D60 swap is worth the effort or not.
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Old 02-04-2012, 09:38 AM   #2 (permalink)
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Chromo 44's are strong!!
But the u-joint is still tiny and weak. Also wheel bearings, knuckles ect ect are wayyyy smaller (weaker) on the 44.
I wheeled a 44 on 37's for a while. I got tired of breaking, and wheeling like a wuss cause i was worried about breakage.
Todd S.

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Old 02-04-2012, 11:56 AM   #3 (permalink)
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As pointed out: axle shaft strength is just one of many factors in the strength equation. The tube diameter/thickness, u-joint size, ring/pinion size, knuckle strength, and many other things means that axle shaft strength alone is not a great comparison. Plus if you get a kingpin d60f then you eliminate the weaker ball joint design of the D44, as well. Just one example: if the tubing advantage of the d60f prevents the pinion from walking away from the ring gear then shaft strength is not much of a factor in that scenario.

Last edited by Jeep CJ7; 02-04-2012 at 11:58 AM.
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Old 02-04-2012, 12:19 PM   #4 (permalink)
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A few threads to ponder

Dana 44 vs Dana 30 discussion about housing deflection

Will a D44 handle a Krawler:

Dana 60 KP outers on a Dana 44 with larger R&P and D60 shafts

Stuffing dana 50 gers into your 78 ford hp housing is an option too.

depends on if you want to do it all at once, in incriments and what tire size you are running now vs later. a 60 with 33's or 35s does a great job of catching every rock that comes along.

A 44 can handle 37's, how much torque and wight you are pushing around are all factors. as is tube diameter and thickness, knuckle and C strenght etc. your front end should have 1/2" wall 3" tubes, a Dana 60 will be 3-1/8" tubes with 1/2" wall. then some other Front dana 60s are 3-1/4 and 3-1/2" so pick accordingly. My old 44 had warn shafts and CTM's i never had an issue with shafts, pinion deflection was my biggest battle
But i Vote

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Last edited by ddestruel; 02-04-2012 at 12:22 PM.
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Old 02-04-2012, 06:09 PM   #5 (permalink)
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dana 44+locker+fullsize+tires bigger than 33's= big boom

i blew up my 44 on 35's with a detroit in the front. that trip sucked ass as i was prepping for it for a couple months. vowed never again.

you could spend big bux on ctm's or even RCV shafts, hd knuckle assy's, and still end up wanting a 60. i went through this decision, settled on a 60. the upgrades i did on it was and ARB, 35 spline outters, and Longfield spindle bushings. works great now.
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