06-12-2014, 02:57 PM | #1 |
Master of Nothings
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LLT vs LFX
What are the major differences design wise. I heard that the LLT has the same power but was never officially tested, with a particular test, before release so they couldnt claim the 323hp or something. Is this true? What can be done to add the most torque to the LLT? Arent the manifolds welded on the LFX but not the LLT, this si why you can add LT headers to the LLT?
I want to learn more about my car but piece mealing info hear and there isnt helping. Does anyone recommend a book or site i can read and just learn a sh*t load of everything?
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06-12-2014, 03:07 PM | #2 |
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So, the LLT was in the Cadillac before it was in the Camaro. It had an official rating of 305 HP in that platform. GM just used those numbers until it could get re-certified with the configuration used in the Camaro. That re-certification was for 312 HP, and all the LLT Camaros had 312 from the beginning.
The LFX had 323 from the beginning. The exhaust manifolds are not welded on, they are integrated into the heads like some Lotus, Honda and other engines. Some of the other differences between the LLT and LFX are: LFX has a different, higher volume High-Pressure Fuel pump LFX uses a Delphi ECU instead of a Bosch LFX has a composite intake manifold instead of aluminum LFX has a 1-bar MAP sensor, the LLT doesn't have one LFX has a different Crank The part number for the MAF appears to be different, but I'm not sure if are scaled differently It appears they have different cams, but I'm not sure if the specs are different; it could just be the fitment. Those are all the engine differences I can think of right now.
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06-12-2014, 03:11 PM | #3 |
Master of Nothings
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Thank you and do you know of a place or book I can go or get that will allow me to learn more about MY Camaro the 2010 2LT? What the best mechanics book to get so I can reference it when I am doing work. I try to search online for the mechanics book and get routed around an endless path or garbage lol
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2010 Chevrolet Camaro 2LT/RS |
06-12-2014, 03:19 PM | #4 | |
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Quote:
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06-12-2014, 03:20 PM | #5 |
Master of Nothings
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Thanks and ive noticed that
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06-12-2014, 05:42 PM | #6 |
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Some other random facts...
According to GM Powertrain here are a few other differences: Compression ratio: LLT: 11.3:1 LFX: 11.5:1 Max Engine RPM: LLT: 6700 LFX: 7200 Weight: LLT: 361lbs LFX: 348lbs I believe the LFX has bigger valves in the heads also, but can't recall sizes of either engine off the top of my head. Not sure about the MAF scaling, but physically they are different in shape, and the electrical connection is not the same. |
06-12-2014, 06:50 PM | #7 |
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Yeah, IIRC the intake valves are about 1.4mm larger on the LFX.
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06-12-2014, 07:01 PM | #8 |
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NJBourne23, you should start editing your first post and keep two lists. One of confirmed differences and another of rumored differences. Who knows, it might get stickied.
Sent from my Samsung via Tapatalk.
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06-12-2014, 10:32 PM | #9 | |
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I saw this a few days back:
From: http://gmauthority.com/blog/gm/gm-engines/lfx/ Not all of these are specific ONLY to the LFX, and some (like E85) are not supported in the Camaro, but are in other GM vehicles with the LFX. Quote:
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06-12-2014, 10:52 PM | #10 |
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Wow! nice info! Thanx everyone!
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06-12-2014, 11:21 PM | #11 |
KaBoom1701
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Awesome info.
Thx guys!
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06-13-2014, 11:32 AM | #12 |
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Here is a link to the GM LFX engine tech document I found... It has some good info, but also a lot of info most people would find useless... Unfortunately I haven't found the document for the LLT engine.
http://www.camaro5.com/forums/showthread.php?t=346228 |
06-13-2014, 11:37 AM | #13 | |
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06-13-2014, 11:38 AM | #14 |
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