Difference between lfx engine and llt - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Srm1135 · 08-05-2013, 02:51 PM

Can someone explain please

PoorMansCamaro · 08-05-2013, 02:55 PM

couple of the biggest differences, is that the lfx has a composite intake manifold, where the llt has an aluminum intake manifold. also, the lfx has an integrated exhaust manifold, meaning you can't get aftermarket headers, whereas the llt, has the standard exhaust manifolds, and can be replaced with short or long tube headers. also, the ECU is different.

Revrider550 · 08-05-2013, 03:00 PM

One of the big things is that the heads and exhaust headers on the LFX are one piece which means no buying aftermarket headers for it. The LLT has the regular heads with separate exhaust headers. I believe the LLT was rated in 2010 at 306 horsepower but then in 2011 at 312? And then the LFX is rated at 323. Basically if you're a modder and want to put headers on your car try to get an LLT. Otherwise the LFX is the most power u can get from a V6 in a camaro

Srm1135 · 08-05-2013, 03:37 PM

Thank you for the info. Too bad I can't put headers on my lfx. Oh well. But thanks for the quick response.

911medic · 08-05-2013, 03:47 PM

Here's another post with some more details: http://www.camaro5.com/forums/showthread.php?p=6307702.

The LLT came with a Bosch ECU which wasn't as tune-friendly as the Delphi unit the V8s got. The LFX got a Delphi ECU, and have been easier to tune. However, I've heard the 2013s had another change to the ECU, not sure exactly what, though.

PoorMansCamaro · 08-05-2013, 03:50 PM

you don't need headers. put on a turbo/SC and nitrous that thing. lmao

13blackLS · 08-05-2013, 04:56 PM

What is better on the lfx that gives it more power? Is there a major difference in the heads? Aside from the exhaust manifolds? Possible to swap out heads?

911medic · 08-05-2013, 10:20 PM

Quote:

Originally Posted by 13blackLS

What is better on the lfx that gives it more power? Is there a major difference in the heads? Aside from the exhaust manifolds? Possible to swap out heads?

Look at the video in the link I posted above. They improved air flow through the engine and reduced weight.

There is a major difference in the heads, as the LFX integrates the exhaust manifold as part of the head. I don't think you'll be swapping them out.

I don't know why you'd want to.

meissen · 08-06-2013, 07:38 AM

Yeah, you literally don't NEED headers on the LFX because your car comes STOCK with the HP benefit. Seriously, the consensus is that the LFX bottle neck is the muffler, not anything before it.

08-05-2013, 02:51 PM	#1
Srm1135 Drives: 2013 Camaro Join Date: Jul 2013 Location: Las Vegas Posts: 200	Difference between lfx engine and llt Can someone explain please

08-05-2013, 02:55 PM	#2
PoorMansCamaro Drives: Really Slow Join Date: Apr 2010 Location: PA Posts: 56,955	couple of the biggest differences, is that the lfx has a composite intake manifold, where the llt has an aluminum intake manifold. also, the lfx has an integrated exhaust manifold, meaning you can't get aftermarket headers, whereas the llt, has the standard exhaust manifolds, and can be replaced with short or long tube headers. also, the ECU is different. __________________

08-05-2013, 03:47 PM	#5
911medic Drives: 2012 SIM 2LT/1970 Camaro Join Date: Nov 2012 Location: Near Minneapolis, MN Posts: 1,578	Here's another post with some more details: http://www.camaro5.com/forums/showthread.php?p=6307702. The LLT came with a Bosch ECU which wasn't as tune-friendly as the Delphi unit the V8s got. The LFX got a Delphi ECU, and have been easier to tune. However, I've heard the 2013s had another change to the ECU, not sure exactly what, though. __________________ All bleeding stops eventually -- 2012 2LT Auto w/sunroof -- My journal thread Roto-Fab Intake & W/W Relocate Kit -- ADM Race Scoop -- Dynomax VT Axle-Back Exhaust -- Vitesse Throttle Controller RX Catch Can -- Drake Bowtie Delete -- JacFab Radio Face Cover -- LED Fog Lights -- LED Dome/Trunk/Plate Lights -- Gen5DIY Dash ABL -- Diode Dynamics Cupholder Lighting Wishlist: ACS T5 Splitter -- Hood Vent Mod -- Footwell/Door Pull/Homelink Button Lighting

08-05-2013, 03:50 PM	#6
PoorMansCamaro Drives: Really Slow Join Date: Apr 2010 Location: PA Posts: 56,955	you don't need headers. put on a turbo/SC and nitrous that thing. lmao __________________

08-06-2013, 07:38 AM	#9
meissen Founder - Michigan FBody Drives: 1994 Camaro LT1, 2012 Camaro 2SS/RS Join Date: Jun 2008 Location: New Haven, MI Posts: 2,599	Yeah, you literally don't NEED headers on the LFX because your car comes STOCK with the HP benefit. Seriously, the consensus is that the LFX bottle neck is the muffler, not anything before it. __________________ 2012 Camaro 2SS/RS L99 - *"Zooma"* 1994 Camaro LT1 A4 - *"Red Alert"* - v6-to-LT1 Swapped Cruiser; Cammed, Stalled, Enjoyed "Gone But Not Forgotten" 2016 Camaro 1LT A8 - "Elmo" 2014 Camaro 1LT M6 - "Cherry Bomb" 2012 Camaro 1LS M6 - "Clifford" Michigan FBody Association http://www.mifbody.com/

08-05-2013, 03:00 PM	#3
Revrider550 Drives: 2015 1SS/RS Join Date: Apr 2013 Location: New York Posts: 104	One of the big things is that the heads and exhaust headers on the LFX are one piece which means no buying aftermarket headers for it. The LLT has the regular heads with separate exhaust headers. I believe the LLT was rated in 2010 at 306 horsepower but then in 2011 at 312? And then the LFX is rated at 323. Basically if you're a modder and want to put headers on your car try to get an LLT. Otherwise the LFX is the most power u can get from a V6 in a camaro

08-05-2013, 03:37 PM	#4
Srm1135 Drives: 2013 Camaro Join Date: Jul 2013 Location: Las Vegas Posts: 200	Thank you for the info. Too bad I can't put headers on my lfx. Oh well. But thanks for the quick response.

08-05-2013, 04:56 PM	#7
13blackLS Drives: 2013 camaro ls; 2005 rx8 Join Date: Mar 2013 Location: Houston Posts: 577	What is better on the lfx that gives it more power? Is there a major difference in the heads? Aside from the exhaust manifolds? Possible to swap out heads?