What's the max torque and horsepower the tranny in the 2007 SS Monte Carlo can handle?

 

[align=center]For the 2007 Chevrolet Monte Carlo, the changes are few but significant. .... Max HP RPM - 5600. Max Torque RPM - 4400[/align][align=center]Check out below site/links for Transmission Infor.[/align][align=center]Hope it helps : )[/align][align=center][/align][align=center]




4L80E
Hydra-Matic Transmission (MT1)
General Motors



[/align][align=center]http://drivetrain.com/4l80e.html[/align][align=center]&[/align][align=center]http://www.tciauto.com/Products/GM/gm_4L80E.asp[/align]

 

2006 Hydra-Matic 4T65 Transaxle (M15/MD7/MN7)




Type:

four speed front-wheel-drive, electronically controlled, automatic overdrive transaxle with electronically controlled torque converter clutch.


Engine range:

2.5L - 5.3L


Maximum engine torque:

280 lb-ft (380 Nm)


Maximum gearbox torque:

400 lb-ft (542 Nm)


Gear ratios:




First:

2.92


Second:

1.56


Third:

1


Fourth:

0.7


Reverse:

2.38


Final Drive Ratio: ( M15 )

2.86, 3.05, 3.29


Final Drive Ratio: ( MN7,MD7 )

3.29


Maximum shift speed:

1-2 7000 rpm


2-3 6500 rpm


3-4 6000 rpm


Maximum validated gross vehicle weight:

2903 kg (6400 lb)


7-position quadrant:

P, R, N, OD, 3, 2, 1


5-position quadrant:

P, R, N, D & DSC +/-


Case material:

die cast aluminum


Shift pattern:

(2) two-way on/off solenoids


Shift quality:

variable bleed solenoid


Torque converter clutch:

pulse width modulated solenoid control


Converter size:

245mm and 258mm (reference) (diameter of torque converter turbine)


Fluid type:

DEXRON® VI


BOT190M1 - all wheel drive fluid for power take off unit


Transmission weight:

93 kg (205 lb) (M15) (wet)


96.6 kg (212 lb) (MN3) (wet)


97.2 kg (214 lb) (MN7) (wet)


112.5 kg (248 lb) (M76 with power take off (PTO) Unit) (wet)


Fluid capacity (approximate):

bottom pan removal: 7L (7.4 qt)


Pressure taps available:

line pressure


Transfer design:

two-axis design, link chain assembly


RPO differences:

M15: 245/258mm torque converter


MD7 - 245mm China Applications


MN7: 258mm torque converter and heavy-duty gearbox


Assembly sites:

Warren, Mich. (M15, MN7)
Shanghai, China (MD7)


Applications:

Chevrolet Malibu (M15)


Chevrolet Malibu Maxx (M15)


Chevrolet Impala (M15,MN7)


Chevrolet Monte Carlo (M15,MN7)


Chevrolet Uplander (M15)


Buick LaCrosse (M15)


Buick Lucerne (M15)


Buick Terraza (M15)


Buick Rendezvous (M15)


Pontiac Grand Prix (M15, MN7)


Pontiac G6


Pontiac Montana (M15)


Saturn Relay (M15)

As stated above 280 lb-ft of torque equates to 373 flywheel hp at 7000RPM. That is the GM rated power the physical internals should be able to handle. Those numbers are normally conservative from what I understand they are anywhere from 10 to 20% under actual as tested to the breaking point.
The 06-07 V8 version of the 4T65E is a considered an ENHANCED 4T65E, which means it has stronger internals. You can put all the shift kits, coolers and stall convertors you want into a trans but you will still be limited to the amount of torque you can put into it by the strength of the hard parts inside. To much power without changing drums and input/output shafts, sprags and planetariesand you might end up with nothing more than a trans case that sounds like a box of marbles. I found out the hard way first time I hit the loud pedal real hard when I put a 350HP 400 lb-ft motor in my firebird with a 700R4 without changing internals. It had a shift kit, cooler and 3000 stall convertor. Needless to say all the internals have been upgraded.

 

hey guys i dont think he wants the listed stats on the engine/trany... i think he is wondering if he starts modding what HP/tq will destroy his trany.

the thing to remember is every mod will have an impact on the engine. without proper tuning and sometimes with tuning you will decrease the life of the motor/trans.

if your adding any more then a 30% increase in HP i strongly recomend a trany cooler and a shift kit. not sure what gearing options are availble for that trans, but swaping to a higher # gear set will give much better acceleration and not add any additional load to the clutch packs in the trans. i went from 3.43 to 3.73 gears and it made quite a diff. with proper tuning afterwards, my mpg didnt suffer much at all either.

with the GTP's they bring 240-280 stock depending on the year. with shift kits, good fluid,Torque converters people have taken those motors in the area of 350-375 crank HP and not had major issues. beyond that you will start to get into the area of braking hard parts in the trany.....

i would research the trany more... find out what other cars had it... some of the newer catty's with the Northstar are in the 330 hp range i think

hope that helps.