Stock 4L80E stronger than built 4L60E?
09-14-2008, 12:35 PM
#1
Stock 4L80E stronger than built 4L60E? I've heard from a not so reliable source that a stock 4L80E (maybe with a shift kit) is stronger than a built 4L60E? Is that true? I'm making 740 RWHP and the race weight is about 3600 lbs, and I know the 4L60E is on the edge at this level.
Hope that helps some.
09-14-2008, 01:23 PM
#3
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There are guys on here running junk yard pull out 4l80e's with 80,000 miles on them running 700-800 rwhp all day long with no problems. All they do is put a good stall in, and roll. I would run a used stock 4l80e anyday over a built 4l60e. Just my $ .02
09-14-2008, 01:33 PM
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youve got to think the 4l80e comes in 7k+ pound vehicles w/ towing capabilities of well over 15k in some applications
so figure a 3500ish lb car and no towwing. i would say you can beat them to death in anything 800hp and under i would think.
so figure a 3500ish lb car and no towwing. i would say you can beat them to death in anything 800hp and under i would think.
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12-09-2008, 07:47 AM
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I'll let you guys know. I am going to be running Rossler's FMVB "plug in" and soon after his Transbrake. I already have a Transgo Stage 3 FMVB kit in use now. I might even give the Trinity one a try. I'll let you guys know in the next few months.
-Dustin-
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12-09-2008, 11:35 AM
#12
The 4L80E in stock form is pretty heavy, considering it takes around 7.5 quarts of fluid and the STOCK converter weighs around 90-100lbs. My 4L80E with the ears cut off and a PY3400 converter weighed probably 30-40lbs AT MOST more than my 4L60E with similiar 3000 midwest converter.
02-27-2009, 08:21 PM
#19
The 4L80E in stock form is pretty heavy, considering it takes around 7.5 quarts of fluid and the STOCK converter weighs around 90-100lbs. My 4L80E with the ears cut off and a PY3400 converter weighed probably 30-40lbs AT MOST more than my 4L60E with similiar 3000 midwest converter.
02-28-2009, 04:28 AM
#20
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The 4l80e is rated to handle 440lb/ft of torque in an 8,000lb vehicle in stock form. There is no doubt in my mind that a 4l80e stock is stronger than a fully built 4l60e. You can polish a turd all you want, but in the end it's still a turd. The 4l60e is simply an inferiorly designed trans for the purpose of high power or weight applications (i.e. it was made to go behind a 200hp v6). That being said, when you are considering a 3,500 lb or less vehicle, a well built 4l60e is obviously viable as has been proven by some of the high powered vehicle running sponsor's transmissions here. Regarding half ton trucks though, it's a tragedy GM ever used the 4l60e in those vehicles, which is why I will be swapping right over to the 80 myself. I am not aware of what all is involved or how difficult the swap is into an F-body, but for the cost one can obtain a complete low mile 4l80e for, the swap is a no brainer in my opinion over a $2500 60e. Wet the 4l80e w/converter weighs 255lbs. In comparison the 4l60e is about 195lbs fully wet.
Last edited by GMCtrk; 02-28-2009 at 04:33 AM.