Vortc Max Question

[SierraJoe1110]

Well, new truck time is rapidly aproaching for me , with one month of school, and hopefully a real job soon. My question to you guys is can you get the Sierra All Terrian with the vortech max? On GMC,com you can only build an All Terrain with the 5.3, but I was reading the light duty shootout on pickuptrucks.com and it says they had an All Terrain with a 6.2, but they could be mistaken I guess. If I have to choose one of those two packages it will be a tough decision lol. Does anyone know what the deal is? Thanks, Joe

[cc1999]

Yes the 6.2 is optional on the AT. I believe there are a few members on here that own them.

 

The build and price program on the GMC site use to let you build them with the 6.2 motor. Not sure why its not letting you do it now.

 

Just to be clear though, you were trying to build a AT in a crew cab configuration correct.

 

The 6.2L was not availble in 09 in the ext. cab version. I believe it is availble either way in the 2010 model.

[MS3DALE]

Yes,You can get the All-Terrain with the 6.2,However it is not considered the VortecMax pkg. (RPO code NHT)

[cc1999]

Here is the option summary from the one I just built on the GMC site. Its letting me build it, the option shows up on the page following the one where it list the 6.0 Max trailering pkg. Also the build and price program is still building 2009s not the 2010s for some reason GM has yet to update there websites for 2010 trucks.

 

OPTIONS

Color

Onyx Black

$0

Ebony, Leather-appointed front seats

$0

 

Packages

All-Terrain Package, Includes Z71 Off-Road Suspension Package, Trailering Package, front and rear carpeted floor mats, inside rearview auto-dimming mirror, 18" chromed aluminum wheels, P265/65R18 on-/off-road blackwall tires, outside heated power-adjustable, power-folding body-colored mirrors, fog lamps, Rancho brand shocks that are White with Red letters, body-colored side moldings with chrome accent, unique four bar horizontal grille insert with chrome surround, "ALL TERRAIN" badging on the front fenders, carpeted floor mats with embroidered "All Terrain" logo, unique sill plates, unique instrument cluster with Z71 logo and "mechanical brushed aluminum" accents for instrument panel, center console and switch trim plates.

$1,985

Skid Plate Package, Frame-mounted shields, includes front underbody shield starting behind front bumper and running to first cross-member, protecting front underbody, oil pan, differential case and transfer case.

Included

 

Mechanical

Z71 Suspension Package, Off-Road, includes 1.81" (46 mm) shocks, off-road jounce bumpers, 34mm front stabilizer bar, Skid Plate Package, air cleaner and Z71 decals on rear quarters.

Included

Engine, Vortec 6.2L V8 SFI E85-compatible, FlexFuel, capable of running on unleaded or up to 85% ethanol (403 hp @ 5700 rpm, 417 lb-ft of torque @ 4300 rpm)

$1,000

Transmission, 6-speed automatic.

$0

Rear Axle, 3.42 ratio.

$0

Trailer Brake Controller, Integrated.

$200

 

Exterior

Wheels, 18" chromed aluminum (spare wheel will not cosmetically match the other 4 wheels). Included and only available with All Terrain Package.

Included

Tires, P265/65R18 on-/off-road, White outlined-letter.

$0

Sunroof, Power, with express-open, retracts into roof. Includes universal home remote.

$995

 

Interior

Seats, Front bucket, includes 10-way power driver and front passenger seat adjusters including 2-way power lumbar control, heated seat cushions and seatbacks, 2-position driver memory, adjustable outboard head restraints, floor console and storage pockets. Standard on SLT.

$0

2-Way Advanced Remote, 2-way key fob that communicates vehicle data to the user from the vehicle. It has a display screen that provides data, such as is the vehicle locked, fuel levels, tire pressure, odometer and more. Also provides extended remote starting range over factory options. Dealer installed option.

$467

Underseat Storage, Composite storage bin under the rear seat. Dealer installed option.

$162

Air Bags, Head curtain side-impact, front and rear outboard seating positions with rollover sensor.

$395

 

Audio

Navigation with DVD/CD Player, With MP3 compatible CD/DVD player and DVD-based navigation with voice prompts, seek-and-scan, digital clock, auto-tone control, Radio Data System (RDS), speed-compensated volume and TheftLock.

$2,250

Entertainment System, Rear seat DVD player with LCD display and 2 sets of wireless headphones. Includes AM/FM stereo with MP3 compatible CD/DVD player, seek-and-scan, digital clock, auto-tone control, Radio Data System (RDS), speed-compensated volume and TheftLock.

$1,295

[SierraJoe1110]

Ohhh ok thats what i was trying to do, it will let me put the 6.2 as an option but not the actual wortec max package. Thanks Guys

[MS3DALE]

Ohhh ok thats what i was trying to do, it will let me put the 6.2 as an option but not the actual vortec max package. Thanks Guys

 

Yeah,You can get the 6.2 with the All-Terrain pkg.But you cannot get the actual "NHT" VortecMAX pkg. with it.

[frdfandc]

Looks like it comes with 3.42's instead of 3.73s?

[cc1999]

I think that 3.42 deal came out when the 6 speed trany did. If not mistaken I think that is the only gear set available on the Z71 pkg.

[MS3DALE]

Looks like it comes with 3.42's instead of 3.73s?

 

 

I think that 3.42 deal came out when the 6 speed trany did. If not mistaken I think that is the only gear set available on the Z71 pkg.

 

Correct,The only way to get 3.73's now is to get the "NHT" Max-Trailering pkg.,which of course is not available with the Z71 pkg.

[Spurshot]

So, are the rear disks and 9.5" ring gear axle part of the 6.2L pgk without the NHT pkg?

[Badass69]

So, are the rear disks and 9.5" ring gear axle part of the 6.2L pgk without the NHT pkg?

 

 

No. All the 6.2 powered trucks have the 9.5" SF with rear discs. I wish you could just order the 373's without NHT. Would make up for the 20" rims and larger tires better than the 3.42's.

[cc1999]

I have not checked the spec on the tires, to be sure, but quite often the tire hight is the same rather you have 17",18" or 20" rims, the amount of sidewall, is typically all that changes. So changing the gearing is not likely going to make much difference from the 18" rims on the AT to 20" on a MAX pkg. I suspect it is strickly for towing purposes.

[Badass69]

I have not checked the spec on the tires, to be sure, but quite often the tire hight is the same rather you have 17",18" or 20" rims, the amount of sidewall, is typically all that changes. So changing the gearing is not likely going to make much difference from the 18" rims on the AT to 20" on a MAX pkg. I suspect it is strickly for towing purposes.

 

 

The 20" tires are around an inch taller than the 17" rim and tire combo. Couple that with what is guaranteed a heavier rim to start with adding to unsprung weight and yes it makes a big difference. I don't care about towing capacity, I just like straightline acceleration. I drive a 31" tall tire equipped 373 geared 6 speed truck that is a 3/4 ton with just an LY6 and it feels stronger off the line than the two 3.42 geared 20" rim equipped 6.2 powered 1/2 tons did. I would like to see a 373 geared NHT package 6.2 powered truck against a comparable one with 3.42's and 20" rims. I am pretty sure the 373 geared one would walk away from the other one fairly easily. I like quick trucks. So that is why I want the 373's beyond the NHT package myself. Personally I would buy either a Sierra All Terrain or Z71 Plus with their 18" rims ( same height as the 17" rim combo) with 373's. Ditches the cheesy wood grain, nicer outward appearance and still great performance. Like I said, towing capacity is meaningless to me, doubt my truck would ever even hook to a trailer. Also driving the 373 gears, I have said this before, the deeper rear gear helps with the lare gap between first and second gear in the 6L80E/6L90E. Hey, give me a 2wd regular cab short bed with the 6.2 and I would buy it. But I somehow never see that happening.........

[cc1999]

I don't doubt there can and probably is more exceleration, going from 3.42 to 3.73, not sure how much one will really notice given the torque management systems are backing down the low end power on our trucks now days.

 

You got my curiosity up on the tire size deal I mentioned earlier. Based on some quick research GM 1/2 tons are no exception, the 17" tire and wheel combo are the same diameter as the 20" combo for a 4x4.

 

Based on specs found at on line tire mfg websites.

 

Your Z71 17" rim comes with a 265/70/17 AT tire That depending on brand and model is rated a 31.9 diameter tire.

The OEM 20" rim with OEM size 275/55/20 tire. Specs out at the same 31.9.

 

Basicly they both come with 32" tires.

 

The 18's on the AT pkg come with 265/65/18 tires that actually have a diameter slightly smaller then 17" or 20" combos. Those 265/65/18s spec out more in the 31.5-31.7 range depending on brand tread style excetra.

 

Rim weight is hard to always tell, I have no doubt that there are some 20" rims that could be lighter then some 17" rims, but I do agree rim weight can be factor when talking performance, and more often then not a 20" rim would weigh more then a 17" rim. However I have to point out that when opting for the 20" rims they typically will provide a light weight highway treaded tire. Where the 17's and 18's on the z71s are AT style tires that will likely weigh more then the highway style tire. When looking at aftermarket tires you can count on LT E rated 10 ply tire weighing a lot more then a 4 ply P rated tire in the identical size.

[Badass69]

I don't doubt there can and probably is more exceleration, going from 3.42 to 3.73, not sure how much one will really notice given the torque management systems are backing down the low end power on our trucks now days.

 

You got my curiosity up on the tire size deal I mentioned earlier. Based on some quick research GM 1/2 tons are no exception, the 17" tire and wheel combo are the same diameter as the 20" combo for a 4x4.

 

Based on specs found at on line tire mfg websites.

 

Your Z71 17" rim comes with a 265/70/17 AT tire That depending on brand and model is rated a 31.9 diameter tire.

The OEM 20" rim with OEM size 275/55/20 tire. Specs out at the same 31.9.

 

Basicly they both come with 32" tires.

 

The 18's on the AT pkg come with 265/65/18 tires that actually have a diameter slightly smaller then 17" or 20" combos. Those 265/65/18s spec out more in the 31.5-31.7 range depending on brand tread style excetra.

 

Rim weight is hard to always tell, I have no doubt that there are some 20" rims that could be lighter then some 17" rims, but I do agree rim weight can be factor when talking performance, and more often then not a 20" rim would weigh more then a 17" rim. However I have to point out that when opting for the 20" rims they typically will provide a light weight highway treaded tire. Where the 17's and 18's on the z71s are AT style tires that will likely weigh more then the highway style tire. When looking at aftermarket tires you can count on LT E rated 10 ply tire weighing a lot more then a 4 ply P rated tire in the identical size.

 

Well my bad. I used a 275/60R20 not the 55 series GM uses. A 265/70R17 comes out at 31.6" BTW and that is on the NHT trucks. 3/8" of an inch is pretty negligible. Coming from the Dodge realm( I know) the 20" rims were heavier than the "cheaper" and smaller 17" ones. I suppose the only way to really know is toss a rim and tire on the scales and see. Z71's come with the 18" rim combo, it's just the Max Trailer NHT trucks that get the 17" rims.... or regular 4X4's without any special option packages.

 

Either way the gearing advantage in itself is still there. Yes these trucks are torque managed to death however the 373 imo is a better match with the 6 speed. I did not like the drop from first to second on the 3.42 geared trucks and it seems more manageable in my 3/4 ton. Now in all reality the same gears in a 1/2 ton should really help it as the engine has a 27 lb ft advantage over mine, along with 43 hp. Maybe not out of the box however....... maybe they torque manage the 6.2 even moreso. Both 6.2 trucks I drove were far from impressive. One was slightly used and the other was brand new. Neither one did much of anything down low and the 1 to 2 shift really hurt. At highway speed they pulled great but getting there the acceleration was so-so. I am waiting for some 2010's with the NHT package to show up on lots. Local dealers have a few coming so I should be able to see. Once they do I will go and drive one and then know how they do. It's the only true way to know......If the 373 geared trucks don't pull any harder than the 3.42 geared ones I guess I will just stick with my old Caprice.