2017 Max Trailering Built to Order

[Logroller]

Sure! The truck scale weighs three axles, the front and rear axle of the tow vehicle and the trailer axle(s). The delta is the difference between the sum of the front and rear axle of the tow vehicle loaded (trailer in tow) minus the sum of the front and rear axle of the tow vehicle unloaded. The difference or delta (change) is also the tongue weight of the trailer. Take a look at this GMC article under the section entitled Check and Balance.

 

Thanks, that's what I was thinking. Weigh each axle. It's been about 22 years since I scaled a pickup truck, no trailer. Even if I had weighed a trailer then, I couldn't tell you now how it played out as that info is in the deepest recess of my gray matter.

[Krusty]

 

Today, with the help of my trusty friend, Ralph, we washed the trailer...a task long overdue. Then we went to a local truck stop with nice/accurate electronic scales and weighed the combo of the new Sierra with the trailer and the Sierra alone. Then we went to a public park and took a few pictures in the parking lot (one posted below). Also, I made a chart in Excel showing the weights of the trailer and the half ton Sierra plus the K2500 Yukon XL that we owned for seventeen years (also see below).

 

 

 

My rig scaled very similar..... 2017 Silverado CCSB 6.2L 4wd.........

 

Scale weight rounded to nearest 100:

6,000 / 2,500 rear axle (Full of gas, with driver & bed cover)

[Steve Bryant]

Also, these truck weights represent me and another guy in the front seat of the truck...so our weights add about 400 pounds to the front axle. I've also reworked my Excel spread sheet to hopefully be a little more straight forward. The bold figures are calculations and the non-bold numbers are directly from the scale.

 

[Sierra Jon]

Also, these truck weights represent me and another guy in the front seat of the truck...so our weights add about 400 pounds to the front axle. I've also reworked my Excel spread sheet to hopefully be a little more straight forward. The bold figures are calculations and the non-bold numbers are directly from the scale.

 

This excel sheet is something I would do and my family would make fun of me for it hahaha​!

 

Well done, and man the new truck balanced out perfectly with 11k on it. These trucks are amazing.

 

Sent from my Nexus 6 using Tapatalk

[powerhaulic]

9000mi on my '17, loving it more every day!

 

My mom liked my truck so much she just got a '17 Denali Ultimate 6.2 and traded her '09 LTZ

pics to follow of the two red crew 6.2's lol

[Sierra Jon]

9000mi on my '17, loving it more every day!

 

My mom liked my truck so much she just got a '17 Denali Ultimate 6.2 and traded her '09 LTZ

pics to follow of the two red crew 6.2's lol

She just haaaaad to one-up you and get the Denali huh?

 

Sent from my Nexus 6 using Tapatalk

[powerhaulic]

She just haaaaad to one-up you and get the Denali huh?

 

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She wanted the power fold boards.............lol

[Krusty]

She wanted the power fold boards.............lol

 

Don't we all........ Discovered something in trying out the Cargo lights / LED bed lights / LED tow mirror lights this morning. When you shift in gear they go out, then come back on when you go into reverse or park. They don't go out with the exit lighting, but do go out auto 20 mins later. Then next start up they are off until you hit the switch again.

 

Well after a month and 900 miles of ownership I have decided the Silverado sewing machine is just too quiet.... ... Especially after my last daily driver for 10 years was a Duramax. At least I had engine music to listen too with the diesel. So tomorrow FedEx will be delivering FLOWMASTER's "quietest" muffler. We will see how that wakes her up!

 

['17 Sierra]

Don't we all........ Discovered something in trying out the Cargo lights / LED bed lights / LED tow mirror lights this morning. When you shift in gear they go out, then come back on when you go into reverse or park. They don't go out with the exit lighting, but do go out auto 20 mins later. Then next start up they are off until you hit the switch again.

 

Well after a month and 900 miles of ownership I have decided the Silverado sewing machine is just too quiet.... ... Especially after my last daily driver for 10 years was a Duramax. At least I had engine music to listen too with the diesel. So tomorrow FedEx will be delivering FLOWMASTER's "quietest" muffler. We will see how that wakes her up!

 

You sure you want the "Big Block" muffler? Big Block signifies 454 in the GM line and they push a lot more CFM than the 5.3 or 6.2 small blocks. You DO want back pressure for more torque in the low end while towing and those mufflers provide the back pressure for big blocks but you might loose some of the performance that you enjoy now.

[michigan2500hd]

You sure you want the "Big Block" muffler? Big Block signifies 454 in the GM line and they push a lot more CFM than the 5.3 or 6.2 small blocks. You DO want back pressure for more torque in the low end while towing and those mufflers provide the back pressure for big blocks but you might loose some of the performance that you enjoy now.

It's a common misconception that a little back pressure is good. Any back pressure is bad.. You want exhaust velocity. That particular muffler is called a big block because it has a large inlet/ outlet. GM made the old and new 6.2 with a 3.5" exhaust pipe.. That muffler is a perfect fit. I've never been convinced that large of a pipe is needed because it seems a 3"pipe would allow better velocity and this give better low end torque but that's just a guess. Maybe these 6.2's need it.

 

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[powerhaulic]

3.5" pipe on mine till the 4.5" tip,

i am quite certain it helps.......

[Krusty]

You sure you want the "Big Block" muffler? Big Block signifies 454 in the GM line and they push a lot more CFM than the 5.3 or 6.2 small blocks. You DO want back pressure for more torque in the low end while towing and those mufflers provide the back pressure for big blocks but you might loose some of the performance that you enjoy now.

 

 

It's a common misconception that a little back pressure is good. Any back pressure is bad.. You want exhaust velocity. That particular muffler is called a big block because it has a large inlet/ outlet. GM made the old and new 6.2 with a 3.5" exhaust pipe.. That muffler is a perfect fit. I've never been convinced that large of a pipe is needed because it seems a 3"pipe would allow better velocity and this give better low end torque but that's just a guess. Maybe these 6.2's need it.

 

Sent from my E6810 using Tapatalk

 

 

3.5" pipe on mine till the 4.5" tip,

i am quite certain it helps.......

 

 

Surprisingly the exhaust tubing to the stock muffler is 3.5" going in on the front - and 3.0" going out on the back to the flapper and the rest of the way to the tailpipe.

 

Pretty sure those (3) cats ahead of the muffler and that squashed exhaust tube under the engine provide plenty of "back pressure" - not to mention the flapper and the resonator........ The FlowMaster is a chambered muffler - unlike MagnaFlow and others that are glorified straight thru glass-packs..........

 

I got on her a couple times this morning to really listen to the stock exhaust - windows up - and windows down - really the stock muffler lets some sound thru when U R on it..........

 

I had FlowMaster 40 Delta's on my '62 Dodge Dart 318ci with the 2bbl carb and sounded fine. When I rebuilt the engine, mild cam and 4bbl, it suddenly was very loud and popped on deceleration. Had the 40's switched out for 50 Delta's and it became much more mellow on normal cruising - but still screams when on it - and the deceleration burble went away. So there definitely is a difference in the different FlowMaster's - will be interesting to see how their "quietest" muffler performs on the Silverado....

 

These 6.2L trucks could benefit from true dual mufflers with 2 mufflers or a dual in/out like this one. If you read the comments - this Texas muffler shop enjoys their own exclusive FlowMaster part numbers - and they double as a X-Pipe - interesting.........

 

 

[RUSSH]

Congrats on the truck.

[Logroller]

Surprisingly the exhaust tubing to the stock muffler is 3.5" going in on the front - and 3.0" going out on the back to the flapper and the rest of the way to the tailpipe.

 

Pretty sure those (3) cats ahead of the muffler and that squashed exhaust tube under the engine provide plenty of "back pressure"........ And the FlowMaster is a chambered muffler - unlike MagnaFlow and others that are glorified straight thru glass-packs..........

 

I got on her a couple times this morning to really listen to the stock exhaust - windows up - and windows down - really the stock muffler lets some sound thru when U R on it..........

 

I had FlowMaster 40 Delta's on my '62 Dodge Dart 318ci with the 2bbl carb and sounded fine. When I rebuilt the engine, mild cam and 4bbl, it suddenly was very loud and popped on deceleration. Had the 40's switched out for 50 Delta's and it became much more mellow on normal cruising - but still screams when on it. So there definitely is a difference in the different FlowMaster's - will be interesting to see how their "quietest" muffler performs on the Silverado....

 

These 6.2L trucks could benefit from true dual mufflers with 2 mufflers or a dual in/out like this one.

 

 

3 Cats, oh boy. Do they put on a 4th Cat for CA emission trucks.

['17 Sierra]

It's a common misconception that a little back pressure is good. Any back pressure is bad.. You want exhaust velocity. That particular muffler is called a big block because it has a large inlet/ outlet. GM made the old and new 6.2 with a 3.5" exhaust pipe.. That muffler is a perfect fit. I've never been convinced that large of a pipe is needed because it seems a 3"pipe would allow better velocity and this give better low end torque but that's just a guess. Maybe these 6.2's need it.

 

Sent from my E6810 using Tapatalk

Correct that velocity is what you want but "back pressure" is what gives that to you; also known as the venturi effect. I believe the misconception is that back pressure means restriction and that's partially true. The same theory applies to shorty headers vs long tube headers and H pipe vs X pipe. The exhaust pulses from opposing cylinders actually pull the exhaust gasses out because of the velocity created from the venturi effect. Velocity causes "scavenging" which actually pulls the exhaust gasses out and pulls the air into the cylinders for a better evacuation of the exhaust gasses and more of an intake charge. This is true with all IC engines and more so in 2 stroke engines. The expansion chamber really acts like a supercharger in 2 strokes. Where scavenging isn't important is with supercharged engines because of the positive pressure in the intake pushing the exhaust gasses out during valve overlap and you'll even see raw fuel blowing out of the zoomies. You'll get more horsepower with open exhaust but only at high RPM's. Down low is where you need the "back pressure and that's where we usually are.

But....in reality, the difference noticed by going with a muffler with larger openings and more free flowing, you most likely won't feel the decrease. Maybe on a chassis dyno but not with the "butt dyno" for sure. It will sound better though.