10 bolt or 14 bolt

justcuz

Explorer
He would also have to switch the rear to a leaf spring suspension.
He has a 5 link coil spring K1500.

I agree that for a leaf sprung Chevy the Ford van Dana 60 is a good alternative to a FF14 bolt.
How do the WMS mounting surfaces compare?
Yes Ford van Dana 60's still used the 8x6.5 bolt pattern, while the Sterling on the F series trucks went to the metric 8x170 mm? bolt pattern.
 

justcuz

Explorer
The one I bought, according to the VIN, came off a 2007 Suburban LTZ with G80 (locker) and GT5(4.10). I did not actually see the vehicle, so I can't confirm that, but have no reason to believe otherwise.

In one of the previous posts in this thread, according to my research and my GM guy, are the models you can find them in. Also, according to my guy, all of them could be optioned with the G80 and GT5, at various rarities.

Let me know if you have any other questions, hopefully this can serve as a guide for people in the future

On the Tahoe forum most were coming out of Escalades earlier than 2007 and had 3.08 or 3.42 gears. All had G80's. The nice thing about the 9.5 SF 14 bolt is they use the same carrier for all gear ratios. 33 spline, 1.33 in diameter axles. The only thing bigger is a SF Dana 60 axle.
 

Burb One

Adventurer
On the Tahoe forum most were coming out of Escalades earlier than 2007 and had 3.08 or 3.42 gears. All had G80's. The nice thing about the 9.5 SF 14 bolt is they use the same carrier for all gear ratios. 33 spline, 1.33 in diameter axles. The only thing bigger is a SF Dana 60 axle.
Ya, I think the earlier than 2007 couldn't have the 4.10, but at least according to my sources, nnbs(07-13) could, along with the g80.

Also the 07-13(nnbs) could also be in the avalanche, suburban, Yukon and Yukon XL, rather than just the escalade and Yukon with the gears you mentioned, so they are easier to find.

And yes one of the great things about these 14sf is that it is BOLT IN to the 5 link coil setup found on the 00-06 (nbs) suburban and tahoes with link setup. Those 60s etc would need fabbing and modification for the leaf springs as well as not being the 6 lug pattern
 

justcuz

Explorer
I just realized the 6 speed automatic was used starting in 2007. With a 4 to 1 first gear as opposed to a 3 to 1 first gear in the 4L60E, I bet the SF14's are much more plentiful after 2007. The 10 bolt would not be able to stand up to the driveline torque of the 6 speed trans. My neighbor up the street has a 2007 with a factory tow package, I'll have to go check his out.
I know starting with 2015 all Suburbans came with the SF14 bolt.
 

Burb One

Adventurer
I just realized the 6 speed automatic was used starting in 2007. With a 4 to 1 first gear as opposed to a 3 to 1 first gear in the 4L60E, I bet the SF14's are much more plentiful after 2007. The 10 bolt would not be able to stand up to the driveline torque of the 6 speed trans. My neighbor up the street has a 2007 with a factory tow package, I'll have to go check his out.
I know starting with 2015 all Suburbans came with the SF14 bolt.

That, and in 2007+, a lot more of the models were optioned/ able to be optioned with the 6.0,/6.2 in 1500 trim (5 link).

Before 07 the only 1500 5 links with the 6.0/6.2 were Escalades and Yukon/XL. Everything else with the bigger engine had the 2500 leaf.

The 5.3's w/ 6 speed I beleive still have have the 10 bolt up until the new models(2015) which all have 14's
 

justcuz

Explorer
The 6.0 and 6.2 option on 2007 and up 1500's makes perfect sense for the 14 bolt SF installation.
With the 5.3 going to direct injection and the improvements of HP and TQ of the 2015 engines I bet GM felt the old 10 bolt was not up to the job. So 14 bolts for everybody!
I have 8,800 miles on my 2015, what a nice driving vehicle!
My old 1993 and 2000 are both still nice and rattle free at over 250,000 miles. I take real good care of my vehicles.
My father in law is drooling thinking I am going to give him one of my old Suburbans.
My wife looked at him and laughed.
 

Burb One

Adventurer
The 6.0 and 6.2 option on 2007 and up 1500's makes perfect sense for the 14 bolt SF installation.
With the 5.3 going to direct injection and the improvements of HP and TQ of the 2015 engines I bet GM felt the old 10 bolt was not up to the job. So 14 bolts for everybody!
I have 8,800 miles on my 2015, what a nice driving vehicle!
My old 1993 and 2000 are both still nice and rattle free at over 250,000 miles. I take real good care of my vehicles.
My father in law is drooling thinking I am going to give him one of my old Suburbans.
My wife looked at him and laughed.

Agree, after reading more, looks like the 10 bolts isn't as strong as I thought (always thought it was just the G80 in the 10 bolt that had problems, but after research, it is actually the axle itself.)

Agree, I had concurrently owned two (just sold my 6.0 that had 200k and was just like the day I bought it.) The one I kept is this 5.3 which has 220k, original engine and knock on wood, I think it'll make it to 300k even with all the abuse of off roading I've put it through. Once you figure out the tranny woes on these trucks (And a few year dependent issue- 07 AFM problems), they will go forever.
 

justcuz

Explorer
I agree, I keep teasing my wife that the 2000 is getting rebuilt at 300,000 miles weather it needs it or not.
I just want to pull the engine apart and see what it looks like inside!
I don't think Land Cruisers have anything on Suburbans to be honest.
 

Burb One

Adventurer
I agree, I keep teasing my wife that the 2000 is getting rebuilt at 300,000 miles weather it needs it or not.
I just want to pull the engine apart and see what it looks like inside!
I don't think Land Cruisers have anything on Suburbans to be honest.

HAHAHA I say the same thing. 300k and it will get a junkyard 5.3 with 100k on it and be good for another 200k. Been meaning to change the original hoses, powersteering pump and water pump, but I think I'm just gonna wait until 300k...

The suburban has been by far the most reliable car or truck I have ever owned. Other than the transmission problems they have(which are easily fixed by a cooler, fan and not mashing the throttle while towing up a grade in 100+ heat,) and treating the fuel pump as a 100k maintenance item, the truck has started everytime.

It has towed, offroaded, and sat, been abused, beat, neglected, lifted, powerslid, snowed on, rained on, never garaged and it is always ready for more.

I've owned some niche cars, racecars and other vehicles, and nothing comes close to the attachment I have to the suburban. It's got the soul of a loyal dog, sitting waiting for your next command and adventure. Think I will go sleep in it tonight in the driveway....
 

justcuz

Explorer
I feel the same way about my Suburbans. I am the family mechanic. When family members have car problems I have them bring their car to me and I let them drive one of the old Suburbans for a week or so until I repair their car. They always comment on how nice they are for there age and how effortlessly they drive. That's when I say, "now you know why I never sell my old Suburbans!" They become a trusted part of the family.
I have a flat fender Jeep, a 96 Impala SS and 4 Chevelles, but I would rather drive one of my Suburbans on a regular basis than any of the cars or the Jeep.
 
Last edited:

Forum statistics

Threads
188,641
Messages
2,908,234
Members
230,800
Latest member
Mcoleman
Top