The 14bolt sf also came in the Z71 trucks of the late 90s early 2000s then gm brought it back in the 18/19s? I believe. It was also used in the H2 and Tralblazer SS and some random Suburbans and pickups depending on tow packages or not. (Think light duty 2500)
On my buddies Tahoe we used a truck housing (can't remember the year) with a TB SS center section to get a factory eaton locker.
Yes, I believe a sf14 is more like the ford 9" or kinda like a sf dana 60. Bigger gears bigger bearings when compared to the 10 bolt. While it's not the full floater it is still an upgrade from the 10bolt.
You'll need custom machined rotors, some random disc brake kit, high dollar wheel studs, etc to do that. Been there, done that. In hindsight, wouldn't have been much more costly to swap in an 8 lug front and keep the 14 stock.
You'll need custom machined rotors, some random disc brake kit, high dollar wheel studs, etc to do that. Been there, done that. In hindsight, wouldn't have been much more costly to swap in an 8 lug front and keep the 14 stock.
Yeah it'll be expensive. A lot more than I want to spend now that I've written it down on paper.
So what's the most logical thing to do?
Swap in a sf14?
I'm incredibly gun shy about 10 bolts. I broke the 10 bolt in my Yukon XL a few years ago. Luckily the local junkyard had one and my brother in law was willing to help me swap it out. I really don't trust them.
Yeah it'll be expensive. A lot more than I want to spend now that I've written it down on paper.
So what's the most logical thing to do?
Swap in a sf14?
I'm incredibly gun shy about 10 bolts. I broke the 10 bolt in my Yukon XL a few years ago. Luckily the local junkyard had one and my brother in law was willing to help me swap it out. I really don't trust them.
Really depends on what you are trying to accomplish.
Swapping a SF 14 is an option. As is adding a quality LSD and better shafts to your existing one. You having access to a ton of equipment as well as your own skills, could redrill a SF14 down to 6 on 5.5.
I think for just towing a single car hauler and your rig, I would freshen up the outer bearings and rock out. Been a lot of folks towing a rig with a half ton for a long time. I wouldn’t worry about it if you’re only driving it and towing. Now if you wanna throw power at it and do smoky burnouts all the time, upgrade the shafts and locker.
I think for just towing a single car hauler and your rig, I would freshen up the outer bearings and rock out. Been a lot of folks towing a rig with a half ton for a long time. I wouldn’t worry about it if you’re o my driving it and towing. Now if you wanna throw power at it and do smoky burnouts all the time, upgrade the shafts and locker.
Well, this rear axle was old man driven with street tires and 160k miles.
My Yukon was 260k with 315s, pulling a 15ft jon boat yeehawin up a steep boat ramp when it gave out.
Yeah I'm just overly paranoid for no reason. Freshen up it is.
Well, this rear axle was old man driven with street tires and 160k miles.
My Yukon was 260k with 315s, pulling a 15ft jon boat yeehawin up a steep boat ramp when it gave out.
Yeah I'm just overly paranoid for no reason. Freshen up it is.
Oh yeah, something to help your 4l60e survive under load, make sure to use the manual function of the shifter (ie positions 1, 2 and 3) instead of letting it shift on its own. The bands that are applied are different depending if you manually shift or not.
Also, never load it with the OD on, but you know that.
Some info on the cooler to get and how to install it:
GM Drivetrain & Suspension - THE Tru-Cool 40K GVW Transmission Cooler Install Thread - I installed one of these way back in the day(2004) and since then get questions about it about once a week sometimes more. This last time around when I installed one I took a bunch of pictures and will be...
As Rebel Bowtie recommended in his previous post, I looked at my heavy duty trailering package with KNP auxiliary cooler in my 2001 Suburban. Factory auxiliary cooler is tiny. So I went ahead and bought the Tru-cool 40k cooler and went ahead and fabbed some aluminum brackets to pre-install...
www.gmtruckclub.com
Some premade mounts (but I'm sure you can drill a flat plate):
Laser cut aluminum trucool 40k transmission cooler mount for the 99-13 trucks. Cooler sold separately (I do not sell them). No hardware included (1/4" or 6mm is recommended).
Oh yeah, something to help your 4l60e survive under load, make sure to use the manual function of the shifter (ie positions 1, 2 and 3) instead of letting it shift on its own. The bands that are applied are different depending if you manually shift or not.
Also, never load it with the OD on, but you know that.
Some info on the cooler to get and how to install it:
GM Drivetrain & Suspension - THE Tru-Cool 40K GVW Transmission Cooler Install Thread - I installed one of these way back in the day(2004) and since then get questions about it about once a week sometimes more. This last time around when I installed one I took a bunch of pictures and will be...
As Rebel Bowtie recommended in his previous post, I looked at my heavy duty trailering package with KNP auxiliary cooler in my 2001 Suburban. Factory auxiliary cooler is tiny. So I went ahead and bought the Tru-cool 40k cooler and went ahead and fabbed some aluminum brackets to pre-install...
www.gmtruckclub.com
Some premade mounts (but I'm sure you can drill a flat plate):
Laser cut aluminum trucool 40k transmission cooler mount for the 99-13 trucks. Cooler sold separately (I do not sell them). No hardware included (1/4" or 6mm is recommended).
Really an easy install with that guy's kit. Pretty shady though. Just paypal some cash to random guy and hope parts come in. My brackets got dropped off a truck and run over at some point in transit, took about 3 weeks and a post office inquiry to find them.
There are also 99+ 1500HD and 2500LD trucks that have 9.5 SF 14 bolts. Nab one of those and slap on some 1.5" thick 8x6.5 to 6x5.5 adapters. Boom. Done. Retain the rear discs and parking brake with another bolt-in axle option courtesy of GM keeping everything the same spring spacing
Or just rebuild the 10 bolt (AAM 8.6) as mentioned. They're not terrible.
We swapped one of the disc braked GM9.5 SF 14 bolts into a 1500 for a guy. Was a bitch to cut everything off but otherwise the swap went great.
Re-used his calipers, but the discs were slightly larger.
Had to change the u joint out for a conversion joint. 1330 to 1350 iirc
Spicer 5-648X U-Joint Kit
Driveshaft length was fine. Just different joints.
E brake and everything swapped over. We re-used all factory brackets except leaf perches.
We swapped one of the disc braked GM9.5 SF 14 bolts into a 1500 for a guy. Was a bitch to cut everything off but otherwise the swap went great.
Re-used his calipers, but the discs were slightly larger.
Had to change the u joint out for a conversion joint. 1330 to 1350 iirc
Spicer 5-648X U-Joint Kit
Driveshaft length was fine. Just different joints.
E brake and everything swapped over. We re-used all factory brackets except leaf perches.
