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Old 05-12-2007, 09:59 PM   #1
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Default L67s and Towing

This has been on my mind for a while as I am a landscaper and regularly tow 8-10K lbs. A 3.4 pullied + supporting mods L67 has around the same power and torque as this 6.0L in the work truck. Do you think that if attached to a good frame, RWD, and a good trans a L67 could easily tow 10,000lbs?
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Old 05-12-2007, 10:03 PM   #2
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um thats a DEF no
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Old 05-12-2007, 10:03 PM   #3
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I would say No.
The L67 is a very efficient engine but it'* weak link is heat disapation and towing that much weight would cook the trani IMO.
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Old 05-12-2007, 10:10 PM   #4
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Doh, I forgot to add the heavy duty cooling system to my list. This is hypathetical as I am not going to buy a full size pickup and drop an L67 in it to find out. Just an interesting thought considering the torque similarities between the L67 and V8 truck motors
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Old 05-13-2007, 10:36 PM   #5
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I don't see why not, you wouldn't want to lug it down, cause of KR, but if you kept it above like 4500 RPM, good cooling, good tranny, I think it'd pull just fine.
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Old 05-13-2007, 10:42 PM   #6
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I'm the only person here that tows with an L67 on a somewhat regular basis. I'll say NO.

Never tow more than 3-5k with one. These are FWD, and the drivetrains weren't designed to handle that load.

Don't do it.
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Old 05-14-2007, 01:18 AM   #7
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Umm, he did say the rhetorical platform would be RWD, so I'm assuming either 4L60 or 700R4. Either of those transmissions should do just fine with the proper cooling.
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