Howdy,
As I understand these transmissions are essentially the same. The 4t45 just has upgraded parts. Is this true or are they a different beast entirely.
would the 4t45e work in ecotec engines? Did they ever offer it for a 2.2 liter ecotec?
from what i've heard there are only a few minor differences if that. just that the 45E is in the v6's and has more clutches and a different FDR. i'm pretty sure they are interchangeable.
He who dies with the most toys wins!
Hrm, well thats interesting. I wonder if the different ratio would be ok for our cars
Our Final drive ratio is 3.6somthing and the 4t45e has 4 different final drive ratios from 3.1somthing all the way up to 3.9somthing(found in the pontiac G6 only). But from what I have read the insides will fit into a 4t40e trans with little modification. Might make little difference for us auto guys if you can find one. Sorry for all the somthings I read these the other day and cant remeber the exact numbers.
TRANNY SWAP!
hahaha Wouldn't that be awesome if it were feasible?
I'll be watching this thread
-Matt
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I am going to have to buy a manual for the 4t45e then. and compare parts to the 4t40e. That way I can see on a part by part basis which ones changed......it was just a thought I had...maybe its not feasible. Just have to do some research, it might not even be worth it.
What's the point? It won't be able to take any more power than the 4T40. The only difference would be the final drive, plus the bell housing is different because the 4T45 belongs on the V6's. You'd be better off getting the 4T40 built to handle some power, which you won't even really need unless you're pushing over 300whp.
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450WHP Turbo Ecotec swap in the works...
Heres the difference when the MN4 and MN5 are compared.
Hydra-Matic 4T40-E/4T45-E Transaxle (MN4/MN5) What's New or Changed View Photo Top of Page
Type: four speed front-wheel-drive, electronically controlled, automatic overdrive transaxle with electronically controlled torque converter clutch
Engine range: 1.5L - 3.1L (MN4)
3.0L - 3.4L (MN5)
Maximum engine torque: 190 lb-ft (260 Nm) (MN4)
205 lb-ft (278 Nm) (MN5)
Maximum gearbox torque: 325 lb-ft (440 Nm) (MN4)
325 lb-ft (440 Nm) (MN5)
Gear ratios:
First: 2.95
Second: 1.62
Third: 1.00
Fourth: 0.68
Reverse: 2.14
Maximum shift speed: 6500 rpm (MN4)
5800 rpm (MN5)
Maximum validated gross vehicle weight: 1990 kg (4347 lb)
7-position quadrant: P, R, N, OD, 3, 2, 1
5-position quadrant: P, R, N, D, D3 (MN5, Malibu)
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)
Chevrolet Malibu (P90)(MN5)
Chevrolet Malibu (GMX 380)(MN5)
Pontiac Sunfire (MN4)
Pontiac Grand Am (MN4/MN5)
Oldsmobile Alero (MN4/MN5)
Saturn L-Series (MN4/MN5)
