LS motor weight - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 19 Old 08-03-2015, 03:02 PM Thread Starter
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LS motor weight

Does anybody know the weights of the 5.3 LC9 and the 6.0 L96? I know that the LC9 is aluminum and the 6.0 is cast steele but I can not find anything out there that states there weight?

2007 JKU X, 6.0 ls and 6L80e with a diy kit from RpmExtreme, 4.10, 4" ProComp Stage 1 lift, AEV drop brackets, 315/70R17 Milestar Patagonia MT , Vision Nemesis 111, 17X9 wheels
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post #2 of 19 Old 08-03-2015, 04:29 PM
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It's been a while but IIRC a traditional LS1 block was around 105 lbs bare and a Lq4/6.0 iron block was around 215 lbs bare.
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post #3 of 19 Old 08-03-2015, 06:23 PM
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Thats probably pretty close.

FWIW...when i was talking with Motech about my LS swap that was one of my questions also, if i remember correctly, Robbie said the 6.0 was roughly 150lb heavier than the 5.3 when they are both fully setup and ready to go
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post #4 of 19 Old 08-03-2015, 08:50 PM Thread Starter
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Wow, 150 lbs. if the 6.0 is used will there need to be anything done to the front end to make up for that weight? Taller coils? From just thinking about the differences of the two I would like to use the aluminum block but the 6.0 cast will give me more pulling power for a camper over the 5.3. I dont want the 6.2 because of the premium fuel. I could always do a cam and heads on the 5.3 for more guts but then that is breaking into the motor, something I want to avoid for once with something I do.

2007 JKU X, 6.0 ls and 6L80e with a diy kit from RpmExtreme, 4.10, 4" ProComp Stage 1 lift, AEV drop brackets, 315/70R17 Milestar Patagonia MT , Vision Nemesis 111, 17X9 wheels
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post #5 of 19 Old 08-04-2015, 07:57 AM
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I don't know the exact weight difference (I thought Robbie/Motech told me 50 lbs vs the 5.3) but he did say that putting a winch on the front of a jeep had more effect on the suspension than the extra engine weight. I'll be dropping off my Jeep in a few weeks for a 6.0 swap.
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post #6 of 19 Old 08-04-2015, 08:36 AM
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Standard production aluminum blocks weigh about 115 lb., production iron blocks about 170 lbs.

LSx iron blocks weigh about 235 lbs due to their construction.

Bottom line is installing a winch on the front bumper has more affect than the iron block.

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post #7 of 19 Old 08-04-2015, 04:49 PM Thread Starter
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Quote:
Originally Posted by MoTech View Post
Standard production aluminum blocks weigh about 115 lb., production iron blocks about 170 lbs.

LSx iron blocks weigh about 235 lbs due to their construction.

Bottom line is installing a winch on the front bumper has more affect than the iron block.
Thanks for chiming in Robbiie. Well looks like it is time to yank the Sprintex Supercharger off and sell it and start looking for the 6.0 and 6L80e Going to be a self install.

2007 JKU X, 6.0 ls and 6L80e with a diy kit from RpmExtreme, 4.10, 4" ProComp Stage 1 lift, AEV drop brackets, 315/70R17 Milestar Patagonia MT , Vision Nemesis 111, 17X9 wheels
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post #8 of 19 Old 08-05-2015, 10:38 AM
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There you go, straight from the horses mouth, I knew I heard a 50 something number in there lol!!

My JK is at Robbies right now, been there for a few weeks undergoing a 6.0 swap. I was initially looking at the 5.3 also but after talking with Robbie for a bit and the pros/cons of the 5.3 the 6.0 and the 6.2 (and more importantly my wants/needs/driving style/etc) I am really happy that I chose the 6.0. Cant wait to pick it back up!!!
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post #9 of 19 Old 08-06-2015, 11:30 AM
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We are currently in the process of a 6.0 6L80E in a 2011. There is some extra weight added especially when you go with a cast iron block, but a 1" spacer usually makes up the difference of the iron block. Remember coil springs are different and vary from manufacture. We have found Teraflex springs will hold more weight before sagging compared to RK, some of the "cheaper" springs will flatten to the bump stops so plan accordingly and be sure to set the bump stops to keep the axle from contacting the oil pan or accessories.


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post #10 of 19 Old 08-06-2015, 06:51 PM Thread Starter
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Thanks RPMEXTREME, good info, its getting closer.

2007 JKU X, 6.0 ls and 6L80e with a diy kit from RpmExtreme, 4.10, 4" ProComp Stage 1 lift, AEV drop brackets, 315/70R17 Milestar Patagonia MT , Vision Nemesis 111, 17X9 wheels
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post #11 of 19 Old 09-09-2015, 08:11 PM
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Quote:
Originally Posted by MoTech View Post
Standard production aluminum blocks weigh about 115 lb., production iron blocks about 170 lbs.

LSx iron blocks weigh about 235 lbs due to their construction.

Bottom line is installing a winch on the front bumper has more affect than the iron block.
Over on LS1Tech forum people were measuring the bare blocks and reviled the weight difference to be slightly more (closer to 100lbs different).

I know I want a 6.0L+ but finding low mileage aluminum blocks aren't cheap. The best bet for those are L92 (6.2L out of Escalades).

LS engines respond well to Cam changes, and talking to the guys at http://www.vincihiperformance.com/ca...s%20truck.html they have great cams for low to mid range tq gains. and using the Cathedral Port heads will yelled better low end numbers than the Square Port heads on the LS3 and L92/L99. Many LS engines after 2007 have DoD (active fuel management) that may require a deletion kit.

So for the money saved by going with an Iron Block, I can do heads and cam swap. My concern with this is that with my bumper and winch how much will my TF 4" springs be effected?
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post #12 of 19 Old 09-11-2015, 08:05 AM
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Quote:
Originally Posted by Bumpstick View Post
Over on LS1Tech forum people were measuring the bare blocks and reviled the weight difference to be slightly more (closer to 100lbs different).

I know I want a 6.0L+ but finding low mileage aluminum blocks aren't cheap. The best bet for those are L92 (6.2L out of Escalades).

LS engines respond well to Cam changes, and talking to the guys at http://www.vincihiperformance.com/ca...s%20truck.html they have great cams for low to mid range tq gains. and using the Cathedral Port heads will yelled better low end numbers than the Square Port heads on the LS3 and L92/L99. Many LS engines after 2007 have DoD (active fuel management) that may require a deletion kit.

So for the money saved by going with an Iron Block, I can do heads and cam swap. My concern with this is that with my bumper and winch how much will my TF 4" springs be effected?
Fyi, they don't do vvt cams. I had to do a custom comp cam specd my mike down here at total engine concepts who is an ls guru and has built me many a race car motor. I have the cam card if you want it.
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post #13 of 19 Old 09-11-2015, 07:24 PM
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Weight ?

I weighed mine before and after the swap and tried to have the conditions exactly the same , I came up with 73 lbs different between the 3.8- 4sp auto , and the 6.2-6L80E at the same scale . Hope that info helps .
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post #14 of 19 Old 09-11-2015, 09:23 PM Thread Starter
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I ended up getting the 6.0 and 6L80E. Just waiting on the install kit to get the install started

2007 JKU X, 6.0 ls and 6L80e with a diy kit from RpmExtreme, 4.10, 4" ProComp Stage 1 lift, AEV drop brackets, 315/70R17 Milestar Patagonia MT , Vision Nemesis 111, 17X9 wheels
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post #15 of 19 Old 09-11-2015, 09:28 PM
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You are gonna' love it!The transmission is what makes this swap so amazing to drive , Now I look for reasons to jump in and go for a ride .
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post #16 of 19 Old 09-11-2015, 09:57 PM
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I have the 3.6 with the newer auto used in SRT cars. The swap for me going to an LS keeps my transmission. So it's not gong to be as big of a difference for me as the 3.8 auto guys.
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post #17 of 19 Old 09-12-2015, 04:22 PM Thread Starter
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Quote:
Originally Posted by un lupus View Post
You are gonna' love it!The transmission is what makes this swap so amazing to drive , Now I look for reasons to jump in and go for a ride .
I'm sure. I know I can hardly wait, especially when I have this to look at in the garage.

2007 JKU X, 6.0 ls and 6L80e with a diy kit from RpmExtreme, 4.10, 4" ProComp Stage 1 lift, AEV drop brackets, 315/70R17 Milestar Patagonia MT , Vision Nemesis 111, 17X9 wheels

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post #18 of 19 Old 09-14-2015, 07:59 AM
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Quote:
Originally Posted by Bumpstick View Post
I have the 3.6 with the newer auto used in SRT cars. The swap for me going to an LS keeps my transmission. So it's not gong to be as big of a difference for me as the 3.8 auto guys.
What? You dont use the factory trans with an LS. You do if go the hemi route.


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post #19 of 19 Old 09-14-2015, 09:20 AM
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Most use the GM 6l80 trans with the LS.
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