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6.0L 345 hp Vortec MAX V8

This is a discussion on 6.0L 345 hp Vortec MAX V8 within the Performance forums, part of the General Discussion category; What is the diffrence betwwen my 6.0 300hp and the new 6.0L 345 hp Vortec MAX V8 for 2006?...

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    6.0L 345 hp Vortec MAX V8


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    What is the diffrence betwwen my 6.0 300hp and the new 6.0L 345 hp Vortec MAX V8 for 2006?
    2004 2500 ChevyCrew Cab 4x4 6.0L
    torsion crank and 2' block

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    Original Gold Member 97Silverado's Avatar
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    Re: 6.0L 345 hp Vortec MAX V8

    45 hp.


    Sorry man, couldn't resist! If I remember correctly the 300hp version uses iron heads and the other aluminum heads. It is basically the same engine as the LQ9 6.0L used in the Escalades.


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    02Z
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    Re: 6.0L 345 hp Vortec MAX V8

    Quote Originally Posted by maxchevy2003
    What is the diffrence betwwen my 6.0 300hp and the new 6.0L 345 hp Vortec MAX V8 for 2006?
    The Vortec MAX is the same motor that's in the Silverado SS. I don't even know why they would offer this motor...I mean if you want more power than the 5.3 has to offer wouldn't you step up to the 2500HD anyway? If I was pulling more than 7000 lbs. regularly I would have a HD. The 6.0L is offered with it. GM is still in the horsepower wars when they need to be thinking about fuel economy. That 6.0L will get 14 while the 5.3L will get 17-18.

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    Original Gold Member 97Silverado's Avatar
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    Re: 6.0L 345 hp Vortec MAX V8

    Quote Originally Posted by 02Z
    The Vortec MAX is the same motor that's in the Silverado SS. I don't even know why they would offer this motor...I mean if you want more power than the 5.3 has to offer wouldn't you step up to the 2500HD anyway? If I was pulling more than 7000 lbs. regularly I would have a HD. The 6.0L is offered with it. GM is still in the horsepower wars when they need to be thinking about fuel economy. That 6.0L will get 14 while the 5.3L will get 17-18.
    You have to go to a 2500HD or bigger, van, Suburban, or SS anyway to get the 6.0L VortecMax.

    http://media.gm.com/us/powertrain/en...g%20trans.html


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    Re: 6.0L 345 hp Vortec MAX V8

    http://www.chevrolet.com/silverado/features/

    I was thinking that you could get the 6.0L in a Z71, but you can't. The Vortec MAX does come in the 1500, but you have to get the Performance Pack, which is a standard cab 2wd short bed. It's better than the SS but it's not called the SS. I guess this is Chevrolet's next wannabe Lightning. They need a blower or the 8.1L. How about they come out with a 496SS in black only.
    Last edited by 02Z; 10-17-2005 at 12:52 PM.

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    Original Gold Member 97Silverado's Avatar
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    Re: 6.0L 345 hp Vortec MAX V8

    Quote Originally Posted by 02Z
    How about they come out with a 496SS in black only.
    Make it a regular cab and that would be the absolute chit!!


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    Re: 6.0L 345 hp Vortec MAX V8

    Quote Originally Posted by 97Silverado
    Make it a regular cab and that would be the absolute chit!!

    9.5:1, 300cc intake heads, .550 lift roller, etc. and put DOD on it so it'll pass the fuel standards. A 20 mpg, 500 hp monster...and it'll still pull 4000 lbs. HELL YEAH!!!

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    Re: 6.0L 345 hp Vortec MAX V8

    Quote Originally Posted by 02Z
    http://www.chevrolet.com/silverado/features/

    I was thinking that you could get the 6.0L in a Z71, but you can't. The Vortec MAX does come in the 1500, but you have to get the Performance Pack, which is a standard cab 2wd short bed. It's better than the SS but it's not called the SS. I guess this is Chevrolet's next wannabe Lightning. They need a blower or the 8.1L. How about they come out with a 496SS in black only.
    You can get the 345 LQ9 in a 1/2 ton, you have beem able to for a few years now, but only in a crew cab or extended cab 1500 RPO B4V.

    The VHO trucks came out in the southern states in 03 or 04 and became available everywhere in EDIT 2005, these are basically a 2wd SS without the body molding. The were all 2wd with 20" rims(non SS style), the 14 bolt 9.5" rear with 3.73 gears and trac control, torsion bar front suspension.
    they were identified by the dealer installed VHO (vortec high output) stickers on the front fenders.
    then there is the 2wd and awd SS trucks.

    But now for 2006 you can get the Vortec Max pack in the e-cab and crew cab trucks these have the 6.0 and the 17" rims.
    And now the older VHO and Texas Trucks trucks are called the Performance edition trucks(2wd e-cab, 20" rims, 14 bolt rear etc).

    You still cant get the 6.0 in a reg cab pickup, according to the websites in this post. Thats too bad.

    Remeber the Coolside 2 pickup, 496 Vortec 8.1 with a cam in an AWD regcab shrtbox with AWD. It had a cam and made 536 hp and over 575 lb ft of torque. If I remeber correctly it ran a low 12 second et in the 1/4 mile. GM allready has all the parts necessary to produce such a truck, but dont.

    Good news though, some PCM tuners have found tables for a 2 bar MAP sensor on the newer GM truck pCM's, this means that the GM engineers are testing something Supercharged in a truck. ooooh, that sounds cool. Whatever it is, please make it 2wd or at least selectable AWD or 4wd, traction is good and all, but I love doing burnouts as well.

    Pauly
    Last edited by Pauly; 10-17-2005 at 01:46 PM.
    97 GMC 2wd RCSB 5.7, s10 2700 footstall, Hooker 24621hkr LT's , 2.5" cats dual 4"pipes exit B4 pass. side tire, custom driveshaft 3.42 G80 FIPK MAF descreen GM/Mercruiser Marine intake manifold 29lb LS2(EV6) injectors Ed Wright PCM(best mod), LT4 KM 14.8@94mph 2.007 4000lbs 122mph

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    Re: 6.0L 345 hp Vortec MAX V8

    Quote Originally Posted by maxchevy2003
    What is the diffrence betwwen my 6.0 300hp and the new 6.0L 345 hp Vortec MAX V8 for 2006?
    The 6.0 in your truck (LQ4) has a bit lower compression ratio than the LQ9 in the other trucks, 9.4:1 for the LQ4 and 10.0:1 for the LQ9.

    I think GM did this because your truck is more likely to be used as a truck that would pull some pretty heavy loads. There would be more chance of your truck being driven at WOT heavily loaded down, with the lower comp. ratio, your engine would be less likely to detonate while at WOT.
    In the early 90's GM installed the TBI 350 in their trucks. In the 2500 and 3500 TBI trucks had 4 bolt mains and a lower comp. ratio than their LD brothers. The reasoning for this was better duarbility under WOT towing and heavy loading condition. I can see this being applied to your 2500 series truck as well.
    Your truck engine has 6 bolt mains and makes another 100 hp than a TBI 350 and only has 16 more cubic inches, pretty amazing.

    Take care
    97 GMC 2wd RCSB 5.7, s10 2700 footstall, Hooker 24621hkr LT's , 2.5" cats dual 4"pipes exit B4 pass. side tire, custom driveshaft 3.42 G80 FIPK MAF descreen GM/Mercruiser Marine intake manifold 29lb LS2(EV6) injectors Ed Wright PCM(best mod), LT4 KM 14.8@94mph 2.007 4000lbs 122mph

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    Re: 6.0L 345 hp Vortec MAX V8

    I have a 2000 siverado 2500 with a 6.0L is that the LQ4?
    White and Pewter 2K Silverado ECSB 2500; 6.0L; Outlaw intk; Hypertech Power Program; Flowmster 50, 2 in 1 out; 2003 cntr console and seat cvrs; Plat Escalade cluster; Tahoe grille; Self painted interior pieces; 2 10" Rockfords, under seat box; Rockford Amp; Xplode deck; Fwrd Folding rear seat

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    Re: 6.0L 345 hp Vortec MAX V8

    Quote Originally Posted by Devildog240
    I have a 2000 siverado 2500 with a 6.0L is that the LQ4?
    I just looked it up and yes your 2500 6 L is the LQ4.

    the difference between the aluminum headed LQ4 and aluminum headed Lq9 is that the LQ4 uses different pistons to lowerthe compression a bit.

    The LQ9 and the LQ4 uses the same heads and shre them with the LS6 Corvette.

    here is a little thread with some info.
    http://www.ls1tech.com/forums/showthread.php?t=61495

    is your 2000 engine iron or aluminum cylinder heads?

    EDIT I think it had iron heads in 2000, the 6.0 was for sure iron headed in 1999. I think when the Zo6 was introduced in 2001 the 6.0 trucks also got the aluminum heads and then the Escalade got the 6.0 with aluminum heads after Cadillac dropped the 5.7 Vortec L31 for 2001.
    I think the 99-00 iron headed 6.0 was the LQ4. Then in 2001 the high compression 6.0 was the LQ9 with its higher comp pistons and the low compression LQ4 with its lower comp pistons.


    ANOTHER EDIT here are some camshat specs for the trucks it looks like there was always the LQ4(both iron and aluminum heads) they added the LQ9 with its higher comp pistons.
    99 LR4/LM7 466/457 190 191 115.5/114(very few 99 actualy got the 114 lobe sep angle)

    00+ LR4/LM7 466/457 190 191 114

    1999 LQ4 466/457 190/191 114
    2000 LQ4 466/457 190/191 114
    2001 LQ4 479/467 207/196 116
    2002 LQ4 479/467 207/196 116
    2003 LQ4 479/467 207/196 116
    2002 LQ9 479/467 207/196 116
    2003 LQ9 479/467 207/196 116


    The 00+ LM7/LR4 do not have the same cam as the LS1.

    peace
    pauly
    Last edited by Pauly; 10-17-2005 at 02:12 PM.
    97 GMC 2wd RCSB 5.7, s10 2700 footstall, Hooker 24621hkr LT's , 2.5" cats dual 4"pipes exit B4 pass. side tire, custom driveshaft 3.42 G80 FIPK MAF descreen GM/Mercruiser Marine intake manifold 29lb LS2(EV6) injectors Ed Wright PCM(best mod), LT4 KM 14.8@94mph 2.007 4000lbs 122mph

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    Re: 6.0L 345 hp Vortec MAX V8

    Thanks for the input l was thinking if l change the heads that would make up the diffrence?
    2004 2500 ChevyCrew Cab 4x4 6.0L
    torsion crank and 2' block

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    Original Gold Member 97Silverado's Avatar
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    Re: 6.0L 345 hp Vortec MAX V8

    Quote Originally Posted by Pauly

    EDIT I think it had iron heads in 2000, the 6.0 was for sure iron headed in 1999. I think when the Zo6 was introduced in 2001 the 6.0 trucks also got the aluminum heads and then the Escalade got the 6.0 with aluminum heads after Cadillac dropped the 5.7 Vortec L31 for 2001.
    I think the 99-00 iron headed 6.0 was the LQ4. Then in 2001 the high compression 6.0 was the LQ9 with its higher comp pistons and the low compression LQ4 with its lower comp pistons.

    My '01 has an iron-headed LQ4.


    Much like alcohol, tobacco, and voting there should be an age requirement for computer usage.
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    Re: 6.0L 345 hp Vortec MAX V8

    the new 6.0 max or h/o is the same motor in the ss and the esclades. they now offer it in the ext cab and crew cab 1500s but u have to get the performance pack which comes with 4:10 gears and limited slip. they also have it in the new suburban LTZ AWD. weird thing is i dont think they offer this in the 2500s. the h/o comes with alum blocks, and steel sleeves and a few other lil things.

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    Re: 6.0L 345 hp Vortec MAX V8

    They should put the new LS7 that is in my 06 Z06. That would be fun. 28 mpgs and 505hp
    2002 black ext Z71. Airaid, throttle body spacer, Gibson cat-back, Wait4me tune, Optima red top, Alpine Type-S speakers.

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    Re: 6.0L 345 hp Vortec MAX V8

    Quote Originally Posted by Norm02
    They should put the new LS7 that is in my 06 Z06. That would be fun. 28 mpgs and 505hp
    I bet it would give the SRT-10 a run for the money. If I had the money I would do that.

    Jason
    The opinions expressed above are purely my own.

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    Re: 6.0L 345 hp Vortec MAX V8

    Can a tuner still get 30 extra hp from these Vortec maxes?
    2004 Tahoe 5.3L... Volant CAI, Magnafow exhaust,Wait4me custom tune,17" Z71 rims and tires.

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    Re: 6.0L 345 hp Vortec MAX V8

    Quote Originally Posted by nick53
    Can a tuner still get 30 extra hp from these Vortec maxes?
    I'm sure they can get close.

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    Re: 6.0L 345 hp Vortec MAX V8

    Sooooo, is the difference between the two 6.0 ltr engines 1) the heads or 2) the pistons?

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    Re: 6.0L 345 hp Vortec MAX V8

    i beleive its the heads and sleeves.

 

 

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