trans. cooler on z71

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trans. cooler on z71

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All Forums >> [Off-Road Vehicles] >> Truck Discussions >> trans. cooler on z71

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trans. cooler on z71 - 9/22/2008 5:59:59 PM

GRIZZMATIC

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From: Alabama
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I have a 2003 gmc ext. cab sierra 1500 Z71. Can anyone tell me how i can tell if it has a transmission cooler. thanks

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RE: trans. cooler on z71 - 9/22/2008 8:10:06 PM

gmcz71

Posts: 8769
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From: Central Mississippi
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I bet you do.

easiest way to tell is look thru your grille, and behind the bumper area... do you see a mini-radiator?

Also, if your truck has the factory towing package theres a very good chance you have a tranny cooler.

< Message edited by gmcz71 -- 9/22/2008 8:21:58 PM >

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RE: trans. cooler on z71 - 9/22/2008 8:22:17 PM

GRIZZMATIC

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From: Alabama
Status: offline

yea behind the grill there is a small one about 5" tall and maybe a foot long. I guess that is it.

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RE: trans. cooler on z71 - 9/22/2008 8:28:01 PM

gmcz71

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Joined: 5/31/2007
From: Central Mississippi
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quote:

ORIGINAL: GRIZZMATIC

yea behind the grill there is a small one about 5" tall and maybe a foot long. I guess that is it.

yep thats it.

If you plan to tow a lot / increase your power output, I suggest you beef up your 4L60E.

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RE: trans. cooler on z71 - 9/23/2008 11:08:48 AM

GRIZZMATIC

Posts: 127
Joined: 12/3/2007
From: Alabama
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what kind of upgrades would you suggest

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RE: trans. cooler on z71 - 9/23/2008 12:53:37 PM

drake08

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Joined: 9/20/2008
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first i would pull out the 4l60e but thats just me i have had bad luck with them and put in a turbo 400 if u dont do that i would get a shift kit put in they make on just for towing for like 150 bucks

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RE: trans. cooler on z71 - 9/23/2008 9:04:45 PM

nonnieselman

Posts: 677
Joined: 7/18/2005
From: Crystal Springs, Ms
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quote:

ORIGINAL: drake08

first i would pull out the 4l60e but thats just me i have had bad luck with them and put in a turbo 400 if u dont do that i would get a shift kit put in they make on just for towing for like 150 bucks

How about a 4L80E?

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RE: trans. cooler on z71 - 9/23/2008 9:06:20 PM

nonnieselman

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quote:

ORIGINAL: GRIZZMATIC

what kind of upgrades would you suggest

a corvette servo is a easy mod to do and its cheap.

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RE: trans. cooler on z71 - 9/28/2008 10:14:14 PM

drake09

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Joined: 9/28/2008
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i would stick with a turbo 350 or 400 the are so much eaiser to work on and alot cheaper to repair if u do break something

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RE: trans. cooler on z71 - 9/28/2008 10:26:11 PM

JRICH

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quote:

ORIGINAL: nonnieselman

quote:

ORIGINAL: GRIZZMATIC

what kind of upgrades would you suggest

a corvette servo is a easy mod to do and its cheap.

Can you elaborate?

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RE: trans. cooler on z71 - 9/28/2008 10:34:06 PM

gmcz71

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From: Central Mississippi
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quote:

ORIGINAL: JRICH

quote:

ORIGINAL: nonnieselman

quote:

ORIGINAL: GRIZZMATIC

what kind of upgrades would you suggest

a corvette servo is a easy mod to do and its cheap.

Can you elaborate?

I couldnt tell you exactly, BUT:

nonnieselman installed Vette servos in my truck (2nd and 4th gears?) and now it shifts a bit firmer and is supposed to help "beef up" the tranny for the tune Im getting.
Along with a little tune he did, it really woke the truck up.
In tow/haul, when it shifts into 2nd it chirps the tires and kinda slings me back in the seat. I like it.

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RE: trans. cooler on z71 - 9/28/2008 10:57:45 PM

drake09

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iam guess you basicaly but a corvette shift pateren in it you should have just but a b/m shft kit in it would have improved in all gears but thats just my opinion

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RE: trans. cooler on z71 - 10/1/2008 2:35:09 AM

nonnieselman

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From: Crystal Springs, Ms
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quote:

ORIGINAL: drake09

iam guess you basicaly but a corvette shift pateren in it you should have just but a b/m shft kit in it would have improved in all gears but thats just my opinion

Gah.. whats a corvette shift pattern? its the same transmission except tail housing and servo..

Have you ever seen a 4L80E fail? this is a TH400 with overdrive just incase you didnt know.. also has a lil better parts in it..
Do you even know what your talkin about?

Corvette Servo gives the trans a lil more "clamping" force on the 2nd gear drum..

Depends on what you plan on using the truck for, but a Vette Servo and a tune will help the trans last longer and makes driving it a lil funner..

Also, can you explain why a TH350 and TH400 is better than a 4L60E and 4L80E?
Transgo HD-2 shift kits are better than the B&Ms.

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RE: trans. cooler on z71 - 10/1/2008 2:38:40 AM

nonnieselman

Posts: 677
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From: Crystal Springs, Ms
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quote:

ORIGINAL: drake08

first i would pull out the 4l60e but thats just me i have had bad luck with them and put in a turbo 400 if u dont do that i would get a shift kit put in they make on just for towing for like 150 bucks

Ive had to pull my built 4L60E 16 times and my last built 4L65E once... After that i put a 4L80E in it with the new Transgo HD-2 kit in it.. and it was $98.
Gear ratios are differnt from the 60E and 80E but the turbo loves a load.. also used the stock Torque Converter.

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RE: trans. cooler on z71 - 10/1/2008 12:06:51 PM

drake09

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Joined: 9/28/2008
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i said that i hadnt had any good luck with 4l60e and rreplaced them with th350 and not had a problem imo there just a stronger trans i have never missed with a 4l80e just because the luck i have had with 60's

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RE: trans. cooler on z71 - 10/1/2008 2:57:55 PM

nonnieselman

Posts: 677
Joined: 7/18/2005
From: Crystal Springs, Ms
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quote:

ORIGINAL: drake09

i said that i hadnt had any good luck with 4l60e and rreplaced them with th350 and not had a problem imo there just a stronger trans i have never missed with a 4l80e just because the luck i have had with 60's

I know the feeling... ive had screwed up Torque converters, broken pumps, broken output shafts, Valve body gasket leaking... you name it..
A 4L80E in stock form can handle way more than a built to the gill 4L60E. Add a Transgo HD-2 and they should handle 800RWHP with easy..

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2000 Silverado ECSB
LQ4 4L80E STS Nitrous

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Post #: 16