Hey everyone, I have a 77 F250. I was just curious, what is the spline count for my rear Dana 60? 30 or 35? I always here people talking about upgrading to 35 spline, so I wasnt sure if I had it already or... well ya know, lol just looking for some advice. Thanks!

 

Rear Dana 60's didn't come in 35 spline.

 

Ok, thank you. Next question... can they be upgraded to 35 spline? B/c I just picked up a brand new demo model Detroit Locker for WAY cheap, its made for Dana 60 and 35 spline. I'm assuming I just need to buy Dana 60 35 spline axle shafts huh?

 

the way i understand it you also have to get axle tubes bored for clearence with aftermarket shafts.

 

i'd sell the locker on ebay... for the price you're gonna pay to get the tubes bored ad get custom axles you can slide in a dana 70 or a sterling 10.25 or something and have a stronger axle...

 

Uh oh... lol looks like I got a lil to excited without looking into it... darn. Ok... well thanks for the input guys!

 

http://www.tellico4x4.com/catalog/in...th/2880_76_217

 

is your truck an offroader or a driver because detroits are not very pleasant on the street. You can typically pick up a used 30 spline powerlock posi for $100 and be done with it. I run stock powerlock dana 60's with 40" ground hawgs and never had a tire slip with power to it. I had a detroit 14 bolt under my daily driver and grew to hate it with a passion. Would have rather had a spool in the rear. Yanked it out in favor of a powerlock 70.

 

you have to bore the spindles out to 1.6" i.d to match them to dana 70 dimensions. then you just get teh 35 spline locker and slide a set of dana 70 shafts in

personally i would just get a one ton rear after you blow the 30 spline junk up, weld your spiders for now. i have found on the road with s detroit they arent bad in longer vehicles like our trucks, but in jeeps etc it can get squirrely. i love my rear detroit....but if you can find a powerlock for cheap throw it in, they are best best limited slip ive ever seen.

personally i wouldnt waste another dime on that rear if you ever wheel your truck

 

Hey thanks guys, I appreciate it. The plan for the truck is just mainly mud bogging.

 

Sell the detroit and a buy a pound of 90K low hydrogen specialty rod from a welding supply store. Lincoln lockers can't be beat!