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Old 05-13-2005, 09:41 PM
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460LE (??) Gm automatic Question

As some of you guys may know by now, my old '93 stick shift Chevy truck was wiped out and I've now got a '97 Silverado with the 460LE 4 speed overdrive trans. Is this transmission o.k. to tow with (in regular drive--not overdrive)? It seems fine, doesn't slip and the fluid looks and smells fine. I'm just a bit leary of the trip to Ohio later in June with a load on. Pictures of my trailer are in my journal, and the load I plan to tow weighs roughly 4,200 to 4500 lbs. Not a huge load really, but it is more than I care to tow if it's an iffy transmission. Maybe I'm just a bit worried about nothing, but I do like to tow the big loads too. Should I be o.k. with an occasional heavy tow? Any thoughts would be great.

Thanks, Chet.

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Old 05-14-2005, 05:50 AM
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Install a tranny cooler and you should be o:k" when driving around town use drive for stop and go traffic! when you get up to speed on the Highway slip it into Overdrive manually! your owners manual should explain this? also it would not hurt to do a fluid/filter change before hand inspect the pan for excessive clutch or metal debre? I would recomend switching to synthetic!
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Old 05-14-2005, 07:44 PM
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Truck's got a trans cooler factory issue, and I didn't get the manual. When I change the fluid to synthetic, should I change to all synthetic, or mix it like I heard you need to do with motor oil? It's got 146,000 miles now, and the previous owner towed a 5th wheel camper (one owner).

Thanks, Chet.
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Old 05-15-2005, 06:56 AM
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chet" put in a full synthetic(ams oil brand) unless you remove the converter and replace it there will be a least a couple of quarts left in it anyway, but I wouldn`t worry about it! the main thing is check to see whats in the pan Now? a little bit of clutch material is normal! but if there is metal shavings or deb-re present? synthetic would be a waste at this point! But since you have a cooler already You should be in great shape! to give and idea what synthetic does" a 2000 ford van V8 with an AOD automatic come in last month, the customer was complaining about a noise when it was in park, it was coming from the torque converter/pump area, I did a fluid and filter change and added Mercon 5 which is a semi synthetic ford recommends for this tranny, when i Started it the noise was gone immediately! I think the last person that changed the fluid used the wrong/standard type 3 ?
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Old 05-15-2005, 12:11 PM
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I'll add the fluid change to the to-do list pre-trip then. One more quick question, too. How does this trans rate next to the 480LE (??). Better for towing, worse, what is the biggest difference between them? O.K., so it's more than one question, but...You know, I just want to learn about it.

In a while, and thanks again, Chet.
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Old 05-15-2005, 05:16 PM
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Quote:
Originally Posted by schnitz
I'll add the fluid change to the to-do list pre-trip then. One more quick question, too. How does this trans rate next to the 480LE (??). Better for towing, worse, what is the biggest difference between them? O.K., so it's more than one question, but...You know, I just want to learn about it.

In a while, and thanks again, Chet.
Not a problem with the questions! the 4l80e is the descendant of the turbo 400, heavy duty, found in 1ton Pickups the 4l60e is the turbo 350 descendant, hope that helps?
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Old 05-15-2005, 05:33 PM
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Sure does. I've always been a bit more fond of the th350 than the 400's. You've been a huge help. Thanks again.

In a while, Chet.
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