L76 vs. L92
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From: Beebe, Arkansas
L76 vs. L92 Whats the difference between the 2007 L76 6.0L and L92 6.2L. I know the bore is different but they have the same heads and intake does the .2 liter make that much difference. Or do they have different cams? Tune maybe?
The L76 is 367 HP and the L92 in the caddy is 403 HP.
What gives!
Looks like the new L76 should make 400HP easy. Because it's basically a LS2.
The L76 is 367 HP and the L92 in the caddy is 403 HP.
What gives!
Looks like the new L76 should make 400HP easy. Because it's basically a LS2.
Thread Starter
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Joined: Jul 2005
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From: Beebe, Arkansas
I think its the cam as well. Anybody have the cam specs for the VVT L92 and L76 cams. I am sure the tune is different as well because the L92 in the denalis are only rated for 380hp.
I dont have the cam specs but I have the entire stock L92 cam phaser thing and all the DOD valley pan stuff. I don't think the L76's have any of that. Since the phaser cam in the L92's moves around I;m not sure it compairing apples to apples if we did know the specs.
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From: Beebe, Arkansas
Originally Posted by Rock_Daddy
I dont have the cam specs but I have the entire stock L92 cam phaser thing and all the DOD valley pan stuff. I don't think the L76's have any of that. Since the phaser cam in the L92's moves around I;m not sure it compairing apples to apples if we did know the specs.
Thread Starter
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From: Beebe, Arkansas
Originally Posted by Rock_Daddy
Oh, I wasnt aware of that.
So the only difference is the size I guess.
So the only difference is the size I guess.
The L76 engine is the new Vortecmax in the 07 Silverado trucks.
Vortec MAX 6.0L V8 engine features:
* From the family of redesigned Gen IV Vortec V8 engines
* Thundering 367 horsepower @ 5500 rpm
* 375 lb.-ft. of torque @ 4300 rpm
* More horsepower than any other half-ton 4x4 pickup(1)
* More torque than any light-duty engine offered by Ford(1)
* EPA estimated 15 city/19 highway MPG in 2WD and 4x4 models
* Deep inside the combustion chamber of Vortec engines, high-speed air movement generates a better fuel-to-air mixture
* Variable Valve Timing (VVT) technology that optimizes combustion, enhances low-end torque and high-end power, promotes fuel efficiency, and helps lower emissions
* A cast-iron crankshaft with undercut and rolled fillets
* High-flow cast-aluminum cylinder heads that feature a low-friction roller-rocker valvetrain
* Electronic Throttle Control provides outstanding throttle response, greater reliability and improved efficiency
* A faster, smarter Engine Control Module with more memory that better synchronizes the multitude of engine operations that occur every split second
* Hydraulic engine mounts for improved vibration isolation
* A coil-near-plug ignition system for a precise delivery of high-energy spark
Trending Topics
So does the L76 6.0L have the same rectagular port heads as the L92? I want to make sure it's not the cathedral port style head.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
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Patrick,
Yes, they both share the rectangular port, hence why you can use the L76 intake with the L92 heads on (say) an LQ9 for you F-body.
Question I have is, is the L92 intake a taller intake for Truck use, unlike the low profile L76? Truck guys might be interested in this, instead of the L76 intake (like me).
Yes, they both share the rectangular port, hence why you can use the L76 intake with the L92 heads on (say) an LQ9 for you F-body.
Question I have is, is the L92 intake a taller intake for Truck use, unlike the low profile L76? Truck guys might be interested in this, instead of the L76 intake (like me).
Thread Starter
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From: Beebe, Arkansas
Originally Posted by 12secSS
Patrick,
Yes, they both share the rectangular port, hence why you can use the L76 intake with the L92 heads on (say) an LQ9 for you F-body.
Question I have is, is the L92 intake a taller intake for Truck use, unlike the low profile L76? Truck guys might be interested in this, instead of the L76 intake (like me).
Yes, they both share the rectangular port, hence why you can use the L76 intake with the L92 heads on (say) an LQ9 for you F-body.
Question I have is, is the L92 intake a taller intake for Truck use, unlike the low profile L76? Truck guys might be interested in this, instead of the L76 intake (like me).
I think the L92 and L76 share intakes on the GM trucks. The tall truck style. The L76 everyone talks about is the Holden L76 car style from down under.
Is that right or wrong anybody?
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The Trifecta - Displacement, Compression, and Lobe size (not confirmed)
The L92 is suppose to be 10.85 or 10.9 to 1 and the L76 is either 10 or 10.25 to 1.
I had linked to the spec's for both motors a couple of months back, but for the life of me I can't remember the web page for GM's technical tidbits....
...Edit...
Found it... doh
https://ls1tech.com/forums/showthrea...1&page=8&pp=20 about half way down.
The L92 is 10.5:1 (for some reason I keep thinking 9.75 for the other)... I know the L76 is suppose to have a lower compression then the L92 I can't remember if it's bellow 9.5 though.
The L92 is suppose to be 10.85 or 10.9 to 1 and the L76 is either 10 or 10.25 to 1.
I had linked to the spec's for both motors a couple of months back, but for the life of me I can't remember the web page for GM's technical tidbits....
...Edit...
Found it... doh
https://ls1tech.com/forums/showthrea...1&page=8&pp=20 about half way down.
The L92 is 10.5:1 (for some reason I keep thinking 9.75 for the other)... I know the L76 is suppose to have a lower compression then the L92 I can't remember if it's bellow 9.5 though.
Last edited by Bring the Noise; Nov 5, 2006 at 06:56 AM.
I saw on a AUS board someone picking up 7mph and 40-50rwhp with just tuning the stock L76. So we can safely say it detuned BIG TIME. Its doing 290-295rwhp stock and 340-350rwhp with just a tune.
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From: Beebe, Arkansas
http://media.gm.com/us/powertrain/en...07/07truck.htm
GM Media Online Engines Show current production engines specs and applications.
GM Media Online Engines Show current production engines specs and applications.
Originally Posted by LSs1Power
I saw on a AUS board someone picking up 7mph and 40-50rwhp with just tuning the stock L76. So we can safely say it detuned BIG TIME. Its doing 290-295rwhp stock and 340-350rwhp with just a tune.
