4l60e reliability

albertachevy91 · 06-24-2008, 08:24 PM

are these trannies behind the 5.3 in the newer trucks just as bad as the old ones. say if i added 100HP and a lift and tires but did regear would i still expect to have a tranny go on me fairly easily? i read allot about how these are crappy trannies but im unclear if they fixed them at all behind the 5.3?

2500ak · 06-24-2008, 08:30 PM

It may hold up to that but not for very long imo. Get a shift kit, servos, when you have the PCM tuned remove torque management and convert to synthetic fluid (only if you get the shift kit though).

Thats about as strong as they will get without going for a built unit, or a 4l80e.

Jokeman · 06-24-2008, 08:33 PM

I got 150k out of my stock 02 trans. They were NOT easy miles either. That includes towing an enclosed sled trailer every weekend in the winter through the mountains with it searching for the right gear constantly.

albertachevy91 · 06-25-2008, 05:50 PM

i just wish they made a 2500 with a 5.3, it would easily be able to move the bigger truck, ford and dodge put there 1/2 motors in the heavy duty trucks but not chev. i want a heavy duty truck that is half-ass decent for mileage. i guess wat i got is about the best i will get in a chev without goin diesel.

96SLT350 · 07-02-2008, 09:25 PM

I have 279 000 km's on my 1996 4x4. always changed fluid and always stomping on it and redlining! Even off Roading still no issues. Hands down great transmission.

gmctrucks · 07-03-2008, 05:11 AM

When it fails have them put HD parts in it.

NEUMANNZZ · 07-03-2008, 08:03 AM

My 4l60e lasted me 43,000 miles with the 4.8. adding hp will only make it worse.

96SLT350 · 07-03-2008, 04:44 PM

I could only imagine if you put heavy duty parts in it like the 4l65...

I dont understand how some people have really bad luck with these transmissions. I must have a GM experimental tranmission hahah

GreaseDog · 07-03-2008, 04:49 PM

the one in my 94 just gave up the goose at 24X,XXX, i'm replacing it with the very built unit that i had built for my 93 originally.

96SLT350 · 07-03-2008, 05:00 PM

Quote:

Originally Posted by GreaseDog

the one in my 94 just gave up the goose at 24X,XXX, i'm replacing it with the very built unit that i had built for my 93 originally.

Make Sure you put a big Fat Trasmission cooler on the front of your RAD :) that baby will gooo for soo long as long as you make a complete stop when shifting from reverse to forward etc.

beatle78 · 07-04-2008, 06:34 AM

Quote:

Originally Posted by albertachevy91

i just wish they made a 2500 with a 5.3, it would easily be able to move the bigger truck, ford and dodge put there 1/2 motors in the heavy duty trucks but not chev. i want a heavy duty truck that is half-ass decent for mileage. i guess wat i got is about the best i will get in a chev without goin diesel.

I AGREE 100%!! This is a huge opportunity for GM!

My uncle has a NBS 1999 Sierra 2500 (8600 gwv) w/ a 5.3L, ext cab, 8' bed. It has PLENTY of power and it's the ONLY one I've ever seen!!

I think you might start to see the 5.3L
s in the 3/4 ton chevy's if these gaas prices stay the way they are!!

96SLT350 · 07-06-2008, 09:09 PM

Quote:

Originally Posted by beatle78

I AGREE 100%!! This is a huge opportunity for GM!

My uncle has a NBS 1999 Sierra 2500 (8600 gwv) w/ a 5.3L, ext cab, 8' bed. It has PLENTY of power and it's the ONLY one I've ever seen!!

I think you might start to see the 5.3L
s in the 3/4 ton chevy's if these gaas prices stay the way they are!!

My friends dad has the 1999 5.3L 2500 8 ft box. Not plenty of power at all considering the engine is bolted to a honking 4L80-e and a heavy 14 bolt diff with 3.73's!!?! Also those truck engines came with only 265 hp if im not mistaken.

mamu · 07-12-2008, 11:47 AM

my 03 came out with 285 horse 325 torque, i believe.

beatle78 · 07-12-2008, 05:08 PM

Quote:

Originally Posted by 96SLT350

My friends dad has the 1999 5.3L 2500 8 ft box. Not plenty of power at all considering the engine is bolted to a honking 4L80-e and a heavy 14 bolt diff with 3.73's!!?! Also those truck engines came with only 265 hp if im not mistaken.

I don't know what the other specs are for his truck, but I have towed my boat with it and it has plenty of power. Maybe if you're doing some REALLY heavy towing it may struggle.

My boat is 4000 lbs.

PBA · 07-13-2008, 03:10 AM

The transmissions have gotten better over the years. When you add taller tires, remember to over compensate with the rear end gear ratio. The tires are not only taller, but much heavier and require much more torque to get them to move. Adding an external cooler never hurts. If you are looking for the best in transmission fluid, (and I have recommended this for years), Lubrication Engineers Monolec 7500 at www.le-inc.com/ This is not a synthetic oil. There are a couple other good builders that use this in their transmission, they would rather not tell anyone, and keep the knowledge of this to themselves. Dana

96ImpSS · 07-14-2008, 10:11 AM

Original 4L60E still going strong here at 265,000 miles. Somewhere between 30k and 40k of that towing between 4000 and 6000 lbs, 50-60 dragstrip passes half of them with the 50-shot.
Transgo kit installed at 90k, Vig TC, '093' servo, and Dana's (PBA) recommended valvebody/separator plate mods at 130k.
Fluid drain/filter change every 50k.

blown68ssrs · 07-14-2008, 11:38 AM

Mine lasted 300K in my 98 K1500. 355 with P1SC @12 psi.

96SLT350 · 07-17-2008, 10:08 PM

Quote:

Originally Posted by blown68ssrs

Mine lasted 300K in my 98 K1500. 355 with P1SC @12 psi.

LOL ! SEE EVERYONE? This transmission aint sissy at all. Some people may have bad luck and others have the best luck. This statement actually makes be feel better. :)

GreaseDog · 07-17-2008, 11:52 PM

Quote:

Originally Posted by 96SLT350

Make Sure you put a big Fat Trasmission cooler on the front of your RAD :) that baby will gooo for soo long as long as you make a complete stop when shifting from reverse to forward etc.

its got a big fat factory cooler in front of the rad. i think thats why this one lasted so long.

GreaseDog · 07-17-2008, 11:54 PM

Quote:

Originally Posted by 96SLT350

LOL ! SEE EVERYONE? This transmission aint sissy at all. some people may have bad luck and others have the best luck. This statement actually makes be feel better. :)

the trans IS sissy. i take it you've never had one apart and seen the interior workings of it. there are some TINY parts in there, especially those used in OD. the biggest problem with them is factory gearing. most of the time it sucks with stock tires, then when you add bigger tires and dont regear, the problem multiplies.

06-24-2008, 08:24 PM	#1
albertachevy91 Registered User Status: Offline Join Date: Jan 2008 Member ID: 80671 Pics: My Gallery Location: alberta, canada Posts: 110	4l60e reliability are these trannies behind the 5.3 in the newer trucks just as bad as the old ones. say if i added 100HP and a lift and tires but did regear would i still expect to have a tranny go on me fairly easily? i read allot about how these are crappy trannies but im unclear if they fixed them at all behind the 5.3?

06-24-2008, 08:30 PM	#2
2500ak Registered User Status: Offline Join Date: May 2007 Member ID: 68421 Pics: My Gallery Location: Alaska Age: 20 Posts: 691	Re: 4l60e reliability It may hold up to that but not for very long imo. Get a shift kit, servos, when you have the PCM tuned remove torque management and convert to synthetic fluid (only if you get the shift kit though). Thats about as strong as they will get without going for a built unit, or a 4l80e. Last edited by 2500ak : 06-24-2008 at 08:30 PM.

06-24-2008, 08:33 PM	#3
Jokeman Premium Member #18 SLACKIN' CARLISLE BISH Status: Offline Join Date: Oct 2001 Member ID: 280 Pics: My Gallery Location: Boston Age: 58 Posts: 15,072	Re: 4l60e reliability I got 150k out of my stock 02 trans. They were NOT easy miles either. That includes towing an enclosed sled trailer every weekend in the winter through the mountains with it searching for the right gear constantly. If its loud, fast and runs on flammable liquid......count me in. LQ9, 11:1 compression, Edelbrock/Lingenfelter heads, 224/224 5xx/5xx 1xx+ cam, 44lb injectors edelbrock headers, 3000 yank stall, flt 4l65e lvl5 trans, WHEATLEY tuned

06-25-2008, 05:50 PM	#4
albertachevy91 Registered User Status: Offline Join Date: Jan 2008 Member ID: 80671 Pics: My Gallery Location: alberta, canada Posts: 110	Re: 4l60e reliability i just wish they made a 2500 with a 5.3, it would easily be able to move the bigger truck, ford and dodge put there 1/2 motors in the heavy duty trucks but not chev. i want a heavy duty truck that is half-ass decent for mileage. i guess wat i got is about the best i will get in a chev without goin diesel. Last edited by albertachevy91 : 06-25-2008 at 05:51 PM.

07-02-2008, 09:25 PM	#5
96SLT350 Registered User Status: Offline Join Date: Sep 2006 Member ID: 54698 Pics: My Gallery Location: Ontario Posts: 313	Re: 4l60e reliability I have 279 000 km's on my 1996 4x4. always changed fluid and always stomping on it and redlining! Even off Roading still no issues. Hands down great transmission.


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07-03-2008, 05:11 AM	#6
gmctrucks Registered User Status: Offline Join Date: Nov 2006 Member ID: 58218 Pics: My Gallery Location: Texas, Coast Age: 48 Posts: 295	Re: 4l60e reliability When it fails have them put HD parts in it.

07-03-2008, 08:03 AM	#7
NEUMANNZZ Premium Member #30 GMC RULZZ Status: Offline Join Date: Mar 2005 Member ID: 25597 Pics: My Gallery Location: San Diego Age: 41 Posts: 6,129	Re: 4l60e reliability My 4l60e lasted me 43,000 miles with the 4.8. adding hp will only make it worse. O2 GMC RCSB 4.8L V8 AUTO 3.73's rebuilt/beefed up 4L60E(at 43,000miles) TRAIN HORNS(see pics in my gallery)

07-03-2008, 04:44 PM	#8
96SLT350 Registered User Status: Offline Join Date: Sep 2006 Member ID: 54698 Pics: My Gallery Location: Ontario Posts: 313	Re: 4l60e reliability I could only imagine if you put heavy duty parts in it like the 4l65... I dont understand how some people have really bad luck with these transmissions. I must have a GM experimental tranmission hahah Last edited by 96SLT350 : 07-03-2008 at 04:46 PM.

07-03-2008, 04:49 PM	#9
GreaseDog King Of The Hill Status: Offline Join Date: Dec 2004 Member ID: 21917 Pics: My Gallery Location: IN Age: 27 Posts: 5,819	Re: 4l60e reliability the one in my 94 just gave up the goose at 24X,XXX, i'm replacing it with the very built unit that i had built for my 93 originally. 1977 Chevy K20 - 350/350/203 10/14FF 1980 GMC K2500 - 350/465/205 10/14FF 1992 Chevy C1500 SWB - 5.7/4L60/14SF - totaled 5/9/08 1993 Chevy C2500 - 350/80E/241 10/14FF 1994 Chevy K1500 - 350/60E/241 IFS/G80 10 bolt READ HERE BEFORE ASSUMING YOU NEED A NEW ENGINE!

07-12-2008, 11:47 AM	#13
mamu Supporting Member Status: Offline Join Date: Oct 2004 Member ID: 19742 Pics: My Gallery Location: arkansas Age: 19 Posts: 209	Re: 4l60e reliability my 03 came out with 285 horse 325 torque, i believe. 2003 half ton 5.3 gasser, wheatley tune, throttle body spacer, airraid intake system, magnaflow 14", ford keys and 2" blocks, 305/70/16 maxxis mudders on stock wheels

07-13-2008, 03:10 AM	#15
PBA Registered User Status: Offline Join Date: Jan 2008 Member ID: 81820 Pics: My Gallery Location: Calimesa, California Age: 58 Posts: 86	Re: 4l60e reliability The transmissions have gotten better over the years. When you add taller tires, remember to over compensate with the rear end gear ratio. The tires are not only taller, but much heavier and require much more torque to get them to move. Adding an external cooler never hurts. If you are looking for the best in transmission fluid, (and I have recommended this for years), Lubrication Engineers Monolec 7500 at www.le-inc.com/ This is not a synthetic oil. There are a couple other good builders that use this in their transmission, they would rather not tell anyone, and keep the knowledge of this to themselves. Dana

07-14-2008, 10:11 AM	#16
96ImpSS Registered User Status: Online Join Date: Oct 2002 Member ID: 3222 Pics: My Gallery Location: Bright, IN Posts: 639	Re: 4l60e reliability Original 4L60E still going strong here at 265,000 miles. Somewhere between 30k and 40k of that towing between 4000 and 6000 lbs, 50-60 dragstrip passes half of them with the 50-shot. Transgo kit installed at 90k, Vig TC, '093' servo, and Dana's (PBA) recommended valvebody/separator plate mods at 130k. Fluid drain/filter change every 50k. Pat Gish '98 XCSB, stock engine, Hooker LT's, 2500 Vig 253 RWHP on PCMFORLESS.COM 87 octane tune 14.92 @ 89.7 on motor (soon to change with a ZZ3 cam ) 13.95 @ 95.8 w/ a 50 dry shot '96 ImpalaSS, tuned by PCMFORLESS.COM: 12.36 @107.6 stock cam and heads 11.33 @116.6 with 150 wet shot Last edited by 96ImpSS : 07-14-2008 at 10:12 AM.

07-14-2008, 11:38 AM	#17
blown68ssrs turning 10's Status: Offline Join Date: Jun 2004 Member ID: 15395 Pics: My Gallery Location: Canada Posts: 755	Re: 4l60e reliability Mine lasted 300K in my 98 K1500. 355 with P1SC @12 psi. A bunch of 1st gen big block Camaro's

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