240k miles. To build or not to build.

[cntryislandboy]

Considering building my Tahoe with 240k miles.

Physically, she needs a solid detail and a head liner. Mechanically she sounds solid, minus a questionable battery. Suspension is starting to become a little squishy. Needs front brakes.

Water pump, belt, thermostat, rear brakes done within last 5k miles.

So here’s my thought process.

Detail the crap out of it.
Fix the headliner.
Lower it and fix squishiness.
Rims and Tires.

Then stock pile cash and when the motor goes order a LS3 or find something wrecked with a nice performance power plant, and add on some fun stuff. Or rebuild current motor.

Not looking to go full race/show truck but a solid sleeper.

Rough estimates with a new crate LS3 and other stuff is in the $15-20 range. So I guess I need to see if I can find something comparable in that price range or move forward with the build.

What are your thoughts?

 

[adriver]

This was all reasonable, easy to do, simple, practical, and a good idea, until you said LS3. Why do you want to spend 3x the cost for aluminum block to go in this beast anyways? you could put in a rebuilt engine (to your specs) with FI for much less than that. If I really wanted that much power its 5.3 turbos, or 6.0 supercharged.

Personally, I would:
Fix the headliner, (and "upgrade" the material since now is the time to do it).
Redo the suspension, ( and drop it or raise it, heck add coilovers or a kit, since now is the time to do it).
GMT900 Front brake upgrade (since now is the time to do it).
If your tires need replacing, then start looking for a takeoff or other set on craigslist ( " )
Start looking for a 6.0 or 5.3 and rebuild it to your goals ( " )

 

[cntryislandboy]

This was all reasonable, easy to do, simple, practical, and a good idea, until you said LS3. Why do you want to spend 3x the cost for aluminum block to go in this beast anyways? you could put in a rebuilt engine (to your specs) with FI for much less than that. If I really wanted that much power its 5.3 turbos, or 6.0 supercharged.

Personally, I would:
Fix the headliner, (and "upgrade" the material since now is the time to do it).
Redo the suspension, ( and drop it or raise it, heck add coilovers or a kit, since now is the time to do it).
GMT900 Front brake upgrade (since now is the time to do it).
If your tires need replacing, then start looking for a takeoff or other set on craigslist ( " )
Start looking for a 6.0 or 5.3 and rebuild it to your goals ( " )

I probably should have added I'm not the smartest car guy, but I'm learning more every day, especially since hanging out here.

I think the main reason I want that much power is the fact that my wife has a 2012 Yukon Denali with the 6.2 and that thing is fun to drive, but she won't let me build it up yet.

I've seen a few of these 5.3 turbos, or 6.0 supercharged in Silverados' and Sierras' so this might be a better option, I didn't realize how much cheaper they would be. My father-in-law has the 6.0 in his work truck and says it's a beast.

Those are pretty much my same thoughts on the headliner, brakes and suspension, it's time for replacement so instead of factory replacement just upgrade.

Unfortunately the tires were replaced when I bought it and there is plenty of tread left. However i was thinking of keeping those for winter driving possibly and getting a semi performance tire. I had even thought of a staggered look, but not sure how that would look or if it would even be worth it.

I don't know much about the GMT900 upgrade I'l have to look into that. Currently I was considering the Powerstop Z36 package. The GMT900 brakes, is that a direct bolt on ? I'm guessing I can use the pads, rotors, and calibers?

Thanks for the input and giving me a few things to consider, sounds like I might be able to save some cash, and still get close to where I want to be.

 

[HiHoeSilver]

I probably should have added I'm not the smartest car guy, but I'm learning more every day, especially since hanging out here.

I think the main reason I want that much power is the fact that my wife has a 2012 Yukon Denali with the 6.2 and that thing is fun to drive, but she won't let me build it up yet.

I've seen a few of these 5.3 turbos, or 6.0 supercharged in Silverados' and Sierras' so this might be a better option, I didn't realize how much cheaper they would be. My father-in-law has the 6.0 in his work truck and says it's a beast.

Those are pretty much my same thoughts on the headliner, brakes and suspension, it's time for replacement so instead of factory replacement just upgrade.

Unfortunately the tires were replaced when I bought it and there is plenty of tread left. However i was thinking of keeping those for winter driving possibly and getting a semi performance tire. I had even thought of a staggered look, but not sure how that would look or if it would even be worth it.

I don't know much about the GMT900 upgrade I'l have to look into that. Currently I was considering the Powerstop Z36 package. The GMT900 brakes, is that a direct bolt on ? I'm guessing I can use the pads, rotors, and calibers?

Thanks for the input and giving me a few things to consider, sounds like I might be able to save some cash, and still get close to where I want to be.

Wholeheartedly agree with @adriver on the 6.0 swap. You can make a lot of juice with that for a lot less money.

Yes, the Gmt900 brakes (for the front) are the way to go. You need the calipers AND brackets, rotors, and pads. You need to be running at least a 17" wheel to clear them.

A lot of guys also go to SS lines instead of the rubber hoses when doing the swap. They will help a lot with forming up the pedal.

 

[swathdiver]

Considering building my Tahoe with 240k miles.

...order a LS3 or find something wrecked ...Or rebuild current motor.

LS3 is car motor. Go with a truck motor and to keep costs down, stay with same generation motor. Get hold of a LQ4 or LQ9 and add go-fast parts to those if desired so it'll run with the Denali!

Guys on here have been down this path already! @Rocket Man @Tonyrodz

 

[Tonyrodz]

LS3 is car motor. Go with a truck motor and to keep costs down, stay with same generation motor. Get hold of a LQ4 or LQ9 and add go-fast parts to those if desired so it'll run with the Denali!

Guys on here have been down this path already! @Rocket Man @Tonyrodz

Used an 05 6.0 Silverado HD motor(LQ4)in my 03 Tahoe. Cammed, long tubes, springs, longer pushrods, 3000 stall, etc etc. Super fun to drive. I have a GN, but prefer the Hoe over it. Check out my build page.

 

[iamdub]

I second (or third, fourth...) the above recommendations. All those minor items you listed can be resolved with improvements as adriver said. An LS3 would be a HUGE waste of money and would impose operating hurdles since it's a Gen IV motor. A solid stock 5.3 or 6.0 with a little boost can be had for far less and would be more powerful. Your wife's Denali would be slow by comparison. You can get the Powerstop upgraded parts for a GMT900 and have even better braking than the stock GMT900 parts- fix and upgrade simultaneously.

 

[BourbonNcigars]

I'll break the string of agreement and say 240K miles and 15 years old sounds like a lot just waiting to become problematic and need replacing. New rims, tires, headliner, springs, shocks, etc for fun (which isn't cheap)...then all kinds of shit starts to go south that has to be fixed? Money pit land. Just my 2 pennies.

 

[HiHoeSilver]

I'll break the string of agreement and say 240K miles and 15 years old sounds like a lot just waiting to become problematic and need replacing. New rims, tires, headliner, springs, shocks, etc for fun (which isn't cheap)...then all kinds of shit starts to go south that has to be fixed? Money pit land. Just my 2 pennies.

Shut up, you.

 

[BourbonNcigars]

Shut up, you.

Yeah don't listen to me. I'm the guy who tears two ply toilet paper in half to save a buck.

 

[live2pull]

Dont forget to add built trans to the list.

 

[08HoeCD]

I'll break the string of agreement and say 240K miles and 15 years old sounds like a lot just waiting to become problematic and need replacing. New rims, tires, headliner, springs, shocks, etc for fun (which isn't cheap)...then all kinds of shit starts to go south that has to be fixed? Money pit land. Just my 2 pennies.

I'm with this guy!

 

[adriver]

Dont forget to add built trans to the list.

yeah surprised this wasn't mention. I'm sure OP could find a low mileage 6.0 with 4L80e pullout from an HD, or fresh builds if this budget allows

If OP is planning on doing this much mechanically, I would personally have to sound deaden the entire thing with a nice system (theres $2-$4K).


What "all kinds of shit starts to go south then"?

Of course I'M THE GUY that's been planning for a couple years to buy an 820 for $3-$5K, put about $12-15K into it, and drive it for hopefully I'm around for another 40 years. (but that includes a 6spd manual, coilovers, sound deadening, most of the common upgrades, …)

 

[cntryislandboy]

Thanks guys for all the input, I've been reading as much as I can in the last day or say, it's seems like a 6.0 swap is going to be a solid option. Ideally I think I'd like to find a decent low mileage 6.0 with 4L80e trans.

I figure rebuild it with some upgraded parts I should be able to come up with a nice little build to have some fun with. It would be awesome to stay in the 4k-5k range for both the motor and trans but we will see. This is also accounting for doing most of the work myself and soliciting some help from my father-in-laws brother who builds hot rods, I've learned a lot from him already so I think it would be well worth it to have the chance to learn a complete swap and build.

I like the idea of doing the GMT900 brake upgrade, does anyone know what bracket I would need. I think someone mentioned only needing a bracket if I remember correctly that I would need a bracket for the calibers.

Also while I'm thinking of it. What size rim might be best to have a happy medium of filing the wheel well and performance. I was thinking of going with the McGaughys 3 in. Front, 5 in. Rear kit with the Belltech Street Performance Shocks.

Thanks again and I'm sure I'll have more questions.

 

[Tonyrodz]

Thanks guys for all the input, I've been reading as much as I can in the last day or say, it's seems like a 6.0 swap is going to be a solid option. Ideally I think I'd like to find a decent low mileage 6.0 with 4L80e trans.

I figure rebuild it with some upgraded parts I should be able to come up with a nice little build to have some fun with. It would be awesome to stay in the 4k-5k range for both the motor and trans but we will see. This is also accounting for doing most of the work myself and soliciting some help from my father-in-laws brother who builds hot rods, I've learned a lot from him already so I think it would be well worth it to have the chance to learn a complete swap and build.

I like the idea of doing the GMT900 brake upgrade, does anyone know what bracket I would need. I think someone mentioned only needing a bracket if I remember correctly that I would need a bracket for the calibers.

Also while I'm thinking of it. What size rim might be best to have a happy medium of filing the wheel well and performance. I was thinking of going with the McGaughys 3 in. Front, 5 in. Rear kit with the Belltech Street Performance Shocks.

Thanks again and I'm sure I'll have more questions.

You'll need the gmt900 caliper mounting bracket, along with the calipers and rotors.

 

[BG1988]

Considering building my Tahoe with 240k miles.

Physically, she needs a solid detail and a head liner. Mechanically she sounds solid, minus a questionable battery. Suspension is starting to become a little squishy. Needs front brakes.

Water pump, belt, thermostat, rear brakes done within last 5k miles.

So here’s my thought process.

Detail the crap out of it.
Fix the headliner.
Lower it and fix squishiness.
Rims and Tires.

Then stock pile cash and when the motor goes order a LS3 or find something wrecked with a nice performance power plant, and add on some fun stuff. Or rebuild current motor.

Not looking to go full race/show truck but a solid sleeper.

Rough estimates with a new crate LS3 and other stuff is in the $15-20 range. So I guess I need to see if I can find something comparable in that price range or move forward with the build.

What are your thoughts?

drive it as is=

 

[Bob2C]

Run it until the wheels fall off. Sounds like you have a solid vehicle


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[johns2008]

Is it a mistake to buy a California 08 Yukon xl with 270,000 on it for $5,500

 

[V30Crewcab]

mine just flipped over 240K. I am going to see how far it will go. had 210K on it when I bought it. still runs perfect so why mess with it?

 

[K9Gunner]

mine just flipped over 240K. I am going to see how far it will go. had 210K on it when I bought it. still runs perfect so why mess with it?

You go lots of life left in it. Mine just rolled 270k and runs great. Just keep the oil changed. Every 3k here


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