NBM2001z28

iTrader: (43)

http://rpmtransmissions.com/index_008.htm

5 PINION OPTION, Upgrading from 4. They have four pinions.

Where are you going to school XXXTRANSAMXXX

joecar

XxXTransAmXxX,

You have to remember something...

A built 4L80E can still take ALOT more torque than a built 4L60E;

They each have their pros and cons, there's a place for each, each has it's own context.

Those dudes are talking about 9 or 10 sec 1/4 mile times, 800+ HP or 1000+ HP, nitrous, some serious stuff;
the extra weight of the 4L80E in this case is irrelevant;
just compute the weight:power ratio of their cars with 100lbs difference and see what I mean.

He's not arguing with you, he is just stating his experience, and experience is more real than bench racing, right...
So don't let that worry you.

For the average Joe's 400 HP daily driver, a built 4L60E fits the budget and works fine and reliably; this is what I would go for in my daily driver (and save money).

Regards
Joe

joecar

And when I pulled one apart I saw 4 too on each the foward gearset and the low/reverse gearset;

agrees with my 4L60E Technicians Guide (I love the artwork in this).

I'm just a DIY so I don't pull them apart everyday...

Regards
Joe

obZidian

iTrader: (2)

XxXTransAmXxX has got to go to another school....

just messing with ya!!!!

97F1R408

iTrader: (2)

NEVER has a 700r4 or a 4l60 -e had 3 pinion planetarys front or rear EVER not factory not aftermarket.Late 2001 GM used 5 pinion front and rear on escalades hummers and other top end products using a 300 mm input drum and converter also making the front planet reaction carrier to shell rollerized with a bearing instead of the 4 tang brass washer : new name after updates 4l65-e. And the numbers 60 and 80 are in direct conjuction with the torque / heavy dutyness of the transmission just as pickups are rated on 1500, 2500, 3500 all designating its build . The new name for the th400 is a 3L80 you notice that the last to digits are the same, you wont find a 4l60-e in any one ton and there is a reason for that.And there are plenty of street cars running with those power #'s some through 60's some through 80's but even with pinned or billet drums no 4l60-e will have a 3-4 clutch pack that doesnt get hurt its just a matter of time. All shifts on a 4l80-e are through clutches not bands and the surface area is at least double on all packs ( low reverse band is only a helper for the low sprag and front band is also just a helper) planets in a 4l80-e from a motorhome or 3500HD will have strait cut gears making them extremly heavy duty but a little louder. If it tells you any thing an Allison 545 in medium duty tow trucks and busses and many others use the same forward and 4th clutch frictions and steels as a th400 or 4l80e and hold without raising line pressure through the roof, A 4l60e has aluminum pump halves and raising line pressure only makes it harder on the pump and will shatter the rotor or break the converter hub also Ive seen endless input drums in stock applications totally blown in half on a good 3-4 shift its only cast aluminum you can't expect much. 4l80e's use to break the direct piston into peices but 97 and newer units have bonded pistons (steel with lip seals molded onto it) If you took a brand new 3500HD 4l80-e 97 and later and a built 4l60-e to the strip the 60 will die first no doubts.And for the prices on some 4l60e's you have to kind of way out your options and think ahead and see yourself paying for it again when its out of waranty, if there even is one.

DrewSG

iTrader: (1)

For anyone looking to get it rolling, the part # is 12491349.

From what I've gathered, it's basically a drop in. The only issues is TCM wiring and such.

00cls1camaross

iTrader: (10)

lol http://www.gmpartsdirect.com/results.cfm

it costs 1,750 slappers

97F1R408

iTrader: (2)

Plus $1000 core. Still seems cheap though

natronathon

with the addition of the tcm for the 6 speed, would there be any other tuning needed? do you think my hptuners would still work for programming the transmission??? has anyone heard how much powa it can handle???

ZDOG

iTrader: (13)

t-t-t

back4more

according to gm stock they will handle 664 ftlbs oof turque. however im sure once they make a shift kit that number will go up. and as far as converters the corvette stlyle will have the same lock up plate as the 4l60e's and the northstars will have a stock twin disk lock up so they will handle some power. as far as computers i know that in 05 up the programs where altered because my scan tool wont even recognize the cars so you will probley need another stand alone unit for it. the only prob with the 6l80 e now is the only bolt patterns are the special one for the corvette one and one for an ecotec/ northstar but it looks as though it might use the same bolt on bell housing as the late model 4l60's
http://media.gm.com/us/powertrain/en...services/Photo Library/Transmissions/Automatics/06 6L80 MYC STS-PR BF

Red Heartbeat

iTrader: (9)