I have an 05 Cavalier, and want to put about 9 PSI of boost through it. Will the factory automatic hold up to this? I have to wait about 6 months before i can install my 4T65E dues to how exspensive it is and was wondering if and how long the stock transmission can last.
There are to many variables to say....it will last this long...
Whats your trans temps....
Do you have a shift improver of some kind....
If need be a trans cooler....
Mileage.....
It should be fine, but it all depends on how everything is working together...
PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO
If you don't beat the snot out of it i don't see any reason why it wont last. But i would add a trans cooler if you don't have one already.
My car--->
http://www.cardomain.com/ride/2569452
96 cav wrote:If you don't beat the snot out of it i don't see any reason why it wont last. But i would add a trans cooler if you don't have one already.
our cars come STOCK with a tranny cooler, its part of the radiator.
Mine is still operating fine after 40,000 normal miles and 20,000 Turbo'd miles - and I dyno'd 243 hp and 236 tq on the stock trans with a Granatelli Transtuner only. Not saying this will be the case for you too, but to me, its proof of its strength.
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Well technically....
Hydra-Matic 4T40-E (MN4)
Type: four speed front-wheel-drive, electronically controlled, automatic overdrive transaxle with electronically controlled torque converter clutch
Engine range: 1.5L - 3.1L (MN4)
Maximum engine torque: 190 lb-ft (260 Nm) (MN4)
Maximum gearbox torque: 325 lb-ft (440 Nm) (MN4)
Gear ratios:
First: 2.95
Second: 1.62
Third: 1.00
Fourth: 0.68
Reverse: 2.14
Maximum shift speed: 6500 rpm (MN4)
Maximum validated gross vehicle weight: 1990 kg (4347 lb)
7-position quadrant: P, R, N, OD, 3, 2, 1
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 (reference) (diameter of torque converter turbine)
Fluid type: DEXRON III
Transmission weight: dry: 74.7 kg (164 lb)
wet: 85.1 kg (187.6 lb)
Fluid capacity (approximate): bottom pan removal: 7L (7.4 qt)
Complete overhaul: 10L (10.6 qt)
dry: 12.5L (13.2 qt)
Pressure taps available: line pressure
Transfer design: two-axis design, link chain assembly
Assembly sites: Windsor, Ontario
Applications: Chevrolet Cavalier (MN4)
Pontiac Sunfire (MN4)
Pontiac Grand Am (MN4)
Oldsmobile Alero (MN4)
Saturn L-Series (MN4)
PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO
Black Ops Ecotec wrote:Granatelli Transtuner.
What's this?
Edited 1 time(s). Last edited Friday, August 03, 2007 9:40 AM
z yaaaa wrote:96 cav wrote:If you don't beat the snot out of it i don't see any reason why it wont last. But i would add a trans cooler if you don't have one already.
our cars come STOCK with a tranny cooler, its part of the radiator.
No im talking about one separate from the radiator.
My car--->
http://www.cardomain.com/ride/2569452
96 cav wrote:z yaaaa wrote:96 cav wrote:If you don't beat the snot out of it i don't see any reason why it wont last. But i would add a trans cooler if you don't have one already.
our cars come STOCK with a tranny cooler, its part of the radiator.
No im talking about one separate from the radiator.
gotcha, but what i dont understand is why? is the stock one not good enough... or???
For every 20-degrees you drop your tranny temp, you double the life of it. If you REALLY wanna make it last, you should do the filter change, add the cooler, switch her over to full synthetic and maybe install a shift kit. Call it preventative maintenance.
I'm doing the 4t65E swap as well...good choice. But I might wait and see what the 40E can really take, power-wise. Call it curiosity!! We put a 3,400 stall in her, though--I think she'll die quicker than I think...lol
Agent Omega wrote:We put a 3,400 stall in her.
where'd you find a 3400 stall at?!!?!
z yaaaa wrote:Agent Omega wrote:We put a 3,400 stall in her.
where'd you find a 3400 stall at?!!?!
No kidding i would like to know this to!
My car--->
http://www.cardomain.com/ride/2569452
Lol...well, the stall I'm using actually came out of Ryan's old 4T60E (yep--it fits). We're making his '96 Prix RWD so he didn't need it anymore, obviously. We use a local guy exclusively for the work and he re-stalled it (higher) for me. I believe the old setup was around a 3,200. It's definitely weird driving a car with that high a stall.
Get in touch with me if you want to be set up with his info--email me at Chris@RDFabs.Com
