LFX newbie rebuild - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Crusin · 01-22-2019, 01:53 PM

Yes 200 is a lot, looks to be 5 mm. Maybe you can find a replacement crank out there. Keep us updated. Good luck hope you hear some good news.

V6Vega · 01-22-2019, 07:29 PM

Just stumbled upon these. The traverse was running the LLT. Can anyone confirm if the crankshaft is the same?

https://www.rockauto.com/en/catalog/...rankshaft,5292

*Edit* apparently they have ones for the LFX out of the Impala. I'm just have no experience with this folks or a refurbed crank

Crusin · 01-22-2019, 07:52 PM

That year is probably the LLT which probably uses the same crank.
Check this out: http://gmauthority.com/blog/gm/gm-engines/lfx/

Crusin · 01-22-2019, 07:55 PM

Wouldn't that be sweet. Here is the suppliers web site with a phone number. You could call and see what they say. http://www.crankshaftsupply.com/

V6Vega · 02-16-2019, 08:39 PM

I just went ahead and ordered one of those refurbished cranks. I'll let you all know what it looks like when it shows up.

xstuntman · 02-17-2019, 09:46 AM

Since you've got it apart could you post on back on the timing chain condition vs mileage of the motor?

The Camaro and Impala 3.6 got the upgraded chains in '12 (but not the Traverse thru '15, way to go GM

) but its been a source of concern for me. Are the screens showing any debris/sludge? I believe they are the only way to lube the chains and between those blocking off along with potentially too thin an oil in hot weather the failure rate seems to go up.

Crusin · 02-20-2019, 06:54 AM

Quote:

Originally Posted by V6Vega

I just went ahead and ordered one of those refurbished cranks. I'll let you all know what it looks like when it shows up.

Did your crank arrive?

gringo · 02-22-2019, 01:30 AM

You can't get new cranks for these engines? WTF?

V6Vega · 02-23-2019, 04:31 PM

xstuntman I didn't see anything to suggest that the timing chain had any issues with oiling or wear. Whoever blew up the motor, had changed the oil at least once, and probably used some additives in a vain attempt to make the "tick" of a spun bearing go away. So I probably wouldnt have found any sludge that would have been a good indicator. Since I have the engine apart, and it likely had oiling issues with that spun bearing, I will be replacing the timing chain regardless.

The crank has arrived. Showed up in a box, packed with expanding foam. Came with a set of oversize king bearings for crank and rod journals. Says it was ground .10 undersized, and according to my cheap calipers, that's correct.

Crusin · 02-23-2019, 10:26 PM

Cool, and great it came with the correct bearings.

Yeah, the timing chain in the LFX engine is suppose to be good for 200,000 miles. I don't know if I'd trust that, but it does not show any necessary maintenance for it.

V6Vega · 07-30-2019, 01:53 AM

Hey all, it's been a while since I made my last update, but I also haven't made any progress to speak of. Things have been busy, and money being directed elsewhere.

Currently I have 2 questions for you all,

1: Does anyone know the height of the intake manifold? (from the intake ports on the cylinder heads, to the top of the manifold)

2: Anyone know if the bell housing bolt pattern is the same between all the 3.6l high-feature v6's?

Although I would prefer a genuine manual gearbox, I do a lot of driving in traffic, up and down hills, so im debating on an auto. Ive pulled a rearend out of a jag sedan for it, with 3.58 gears. Also planning to run 255/60/r15's for an o.d. of 27in.

The thought was if I went with one of them fancy 8-speeds out of the newer ats-v, I could be cruising at 75mph with 2200rpm. (They have a 0.85 and .065 overdrive for 7th and 8th) I'd not do the paddles, but come up with something that looks like a stick, but just push/pull.

DSX_Camaro · 07-30-2019, 10:44 AM

Nothing else has an LFX / 8L computer system. The cost to convert would be astronomical, I'm sure. If you're looking at the ATS-V and really want to try for something, see if you can grab an ATS-V bellhousing for the TR6060. Otherwise if you want an auto I think you should just grab a 4L or 6L.

V6Vega · 08-25-2019, 06:51 PM

Hey all, if any of you are near the north SF bay area amd want any parts from this engine, let me know.

I'm going to be time and money ahead to buy another engine and get this project moving. Never mind my sanity.

Still going to run an LFX, just not this one.

01-22-2019, 01:53 PM	#15
Crusin 2010 Camaro 1LT/RS Drives: 2010 Camaro 1LT/RS, 2017 Silverado Join Date: Jan 2019 Location: Pennsylvania Posts: 39	Yes 200 is a lot, looks to be 5 mm. Maybe you can find a replacement crank out there. Keep us updated. Good luck hope you hear some good news. __________________ My 2010 1LT/RS New Jasper Engine, BBK Long Tube Headers, Ceramic Coated w/ High Flow Cats, K&N CAI, Halo Headlights, Generic Oil Catch Can

01-22-2019, 07:52 PM	#17
Crusin 2010 Camaro 1LT/RS Drives: 2010 Camaro 1LT/RS, 2017 Silverado Join Date: Jan 2019 Location: Pennsylvania Posts: 39	That year is probably the LLT which probably uses the same crank. Check this out: http://gmauthority.com/blog/gm/gm-engines/lfx/ __________________ My 2010 1LT/RS New Jasper Engine, BBK Long Tube Headers, Ceramic Coated w/ High Flow Cats, K&N CAI, Halo Headlights, Generic Oil Catch Can

01-22-2019, 07:55 PM	#18
Crusin 2010 Camaro 1LT/RS Drives: 2010 Camaro 1LT/RS, 2017 Silverado Join Date: Jan 2019 Location: Pennsylvania Posts: 39	Wouldn't that be sweet. Here is the suppliers web site with a phone number. You could call and see what they say. http://www.crankshaftsupply.com/ __________________ My 2010 1LT/RS New Jasper Engine, BBK Long Tube Headers, Ceramic Coated w/ High Flow Cats, K&N CAI, Halo Headlights, Generic Oil Catch Can

02-17-2019, 09:46 AM	#20
xstuntman Drives: 2012 Victory Red LFX Join Date: Dec 2012 Location: west central Texas Posts: 1,310	Since you've got it apart could you post on back on the timing chain condition vs mileage of the motor? The Camaro and Impala 3.6 got the upgraded chains in '12 (but not the Traverse thru '15, way to go GM) but its been a source of concern for me. Are the screens showing any debris/sludge? I believe they are the only way to lube the chains and between those blocking off along with potentially too thin an oil in hot weather the failure rate seems to go up. __________________ 2018 SS wheels, red Heritage grille, actual driving lights, ZL1 strut tower brace, GM Performance billet aluminum fuel door, front grille Bowtie delete, painted red rotors and calipers, 1/4 window American Flags, splash guards, AEM dry panel air filter.

02-23-2019, 10:26 PM	#24
Crusin 2010 Camaro 1LT/RS Drives: 2010 Camaro 1LT/RS, 2017 Silverado Join Date: Jan 2019 Location: Pennsylvania Posts: 39	Cool, and great it came with the correct bearings. Yeah, the timing chain in the LFX engine is suppose to be good for 200,000 miles. I don't know if I'd trust that, but it does not show any necessary maintenance for it. __________________ My 2010 1LT/RS New Jasper Engine, BBK Long Tube Headers, Ceramic Coated w/ High Flow Cats, K&N CAI, Halo Headlights, Generic Oil Catch Can

01-22-2019, 07:29 PM	#16
V6Vega Drives: Chevy Vega Join Date: Jan 2019 Location: NorCal Posts: 13	Just stumbled upon these. The traverse was running the LLT. Can anyone confirm if the crankshaft is the same? https://www.rockauto.com/en/catalog/...rankshaft,5292 Edit apparently they have ones for the LFX out of the Impala. I'm just have no experience with this folks or a refurbed crank

02-16-2019, 08:39 PM	#19
V6Vega Drives: Chevy Vega Join Date: Jan 2019 Location: NorCal Posts: 13	I just went ahead and ordered one of those refurbished cranks. I'll let you all know what it looks like when it shows up.

02-22-2019, 01:30 AM	#22
gringo Account Suspended Drives: Camaro V6 Join Date: Oct 2016 Location: U.S. Posts: 1,722	You can't get new cranks for these engines? WTF?

02-23-2019, 04:31 PM	#23
V6Vega Drives: Chevy Vega Join Date: Jan 2019 Location: NorCal Posts: 13	xstuntman I didn't see anything to suggest that the timing chain had any issues with oiling or wear. Whoever blew up the motor, had changed the oil at least once, and probably used some additives in a vain attempt to make the "tick" of a spun bearing go away. So I probably wouldnt have found any sludge that would have been a good indicator. Since I have the engine apart, and it likely had oiling issues with that spun bearing, I will be replacing the timing chain regardless. The crank has arrived. Showed up in a box, packed with expanding foam. Came with a set of oversize king bearings for crank and rod journals. Says it was ground .10 undersized, and according to my cheap calipers, that's correct.

07-30-2019, 01:53 AM	#25
V6Vega Drives: Chevy Vega Join Date: Jan 2019 Location: NorCal Posts: 13	Hey all, it's been a while since I made my last update, but I also haven't made any progress to speak of. Things have been busy, and money being directed elsewhere. Currently I have 2 questions for you all, 1: Does anyone know the height of the intake manifold? (from the intake ports on the cylinder heads, to the top of the manifold) 2: Anyone know if the bell housing bolt pattern is the same between all the 3.6l high-feature v6's? Although I would prefer a genuine manual gearbox, I do a lot of driving in traffic, up and down hills, so im debating on an auto. Ive pulled a rearend out of a jag sedan for it, with 3.58 gears. Also planning to run 255/60/r15's for an o.d. of 27in. The thought was if I went with one of them fancy 8-speeds out of the newer ats-v, I could be cruising at 75mph with 2200rpm. (They have a 0.85 and .065 overdrive for 7th and 8th) I'd not do the paddles, but come up with something that looks like a stick, but just push/pull.

07-30-2019, 10:44 AM	#26
DSX_Camaro Drives: 2013 SW 2LT/RS LFX/AY6 Join Date: Feb 2013 Location: Orlando, FL Posts: 1,741	Nothing else has an LFX / 8L computer system. The cost to convert would be astronomical, I'm sure. If you're looking at the ATS-V and really want to try for something, see if you can grab an ATS-V bellhousing for the TR6060. Otherwise if you want an auto I think you should just grab a 4L or 6L. __________________ K&N CAI, 1LE Strut Tower Brace, Elite Engineering Catch Can and Clean Side Separator, Apex Scoop w/ Washer Relocation Kit, CTS Front Calipers and Rotors, JacFab Ported Intake Manifold, JacFab Intake Manifold Spacer, 80mm Overkill Throttle Body, SS Brake Lines, Ideal Garage Master Cylinder, Monster Twin Disc Clutch, NPP Retrofit w/ Magnaflow Resonated X, ARH Catless Downpipes, JRE Built 3.45 Diff, 1LE Axles, 1LE Hubs, Overkill Tuned, BMR Anti Wheel-hop Kit Stage I, ACS TL1 Hood Insert, ZL1 Spoiler

08-25-2019, 06:51 PM	#27
V6Vega Drives: Chevy Vega Join Date: Jan 2019 Location: NorCal Posts: 13	Hey all, if any of you are near the north SF bay area amd want any parts from this engine, let me know. I'm going to be time and money ahead to buy another engine and get this project moving. Never mind my sanity. Still going to run an LFX, just not this one.