Auto Trans weight/Length/Gear/Tq info ready for you.
11-29-2004, 10:15 AM
#1
Auto Trans weight/Length/Gear/Tq info ready for you. http://www.442.com/oldsfaq/oftrn.htm...n%20Comparison
From a little digging, the "Rule of Thumb" for parasitic loss in M6's is 17%
A4's are 22%. Gear Vendors unit is 1% on top of base transmission.
Still digging to find the 4L80 #'s
-------------------|--------Maximum-------|
-------------------Engine--Gearbox--Gross----Torque----Overall
Transmission------Weight--Torque--Torque--Veh. Wt.--Conv. Dia.---Length
---Model----------(lbs.)----(lb/ft)---(lb/ft)----(lbs)-----(inches)----(inches)
Rear Wheel Drive:
TH-180C (3L30)--130/140----258-----440-----7716----9.6/10.24---26.29/28.11
TH-200-4R---------157------330-----550-----6000------11.73-----28.26
TH-300 (Jetaway)
TH-350
TH-400 (3L80)-----190------440-----885-----12000------12.20----29.30/34.48
TH-700-R4 (4L60)-167/184 --350-----650------8600----9.6/11.73--29.77/30.64
4L30-E-----------168/177---258-----440------7716----9.6/10.24--28.54/31.57
4L60-E-----------160/176---350-----612------8600----9.6/11.73--29.77/30.64
4L80-E------------260------440-----885-----15000------12.20----31.93/33.02
Transmission
--Model-----------First---Second---Third---Fourth---Reverse
Rear Wheel Drive:
TH-180C (3L30)----2.400---1.479----1.000------------2.000
TH-200-4R---------2.741---1.568 ---1.000---0.674----2.067
TH-300 (Jetaway)
TH-350------------2.52----1.52-----1.00-------------------
TH-400 (3L80)-----2.482---1.482----1.000------------2.077
TH-700-R4 (4L60) -3.059---1.625----1.000---0.696----2.294
4L30-E------------2.400---1.479----1.000---0.723----2.000
4L30-E Optional ---2.860---1.620----1.000---0.723----2.000
4L60-E------------3.059---1.625----1.000---0.696----2.294
4L80-E------------2.482---1.482----1.000---0.750----2.077
The difference between the transmissions is most likely the number of internal clutch plates. The main differences between models of the TH-4L60-E are: 1) different case, bellhousing, and extension configurations, 2) varying amounts of friction plates vs. steel plates in various clutch packs, 3) two different torque converter diameters.
Here are some power loss estimates:
If memory serves me the TH-400 takes approximately 45 HP, the TH-350 uses about 30HP, and the PowerGlide/JetAway uses about 20HP. I don't remember where I saw these numbers posted but they seem to fall pretty close to true. We used my friends '68 Chevelle as a test bed for the difference between the TH-400 vs TH-350. He picked up nearly two tenths by switching to the TH-350 behind his 327. He attributed this to 3 things:
1) the 350 weighed less.
2) the 350 has a slightly lower first gear (2.52 vs 2.48).
3) and finally the supposed HP loss difference.
The differences in loss also seem plausible when considering the size (mass) of the internals on each of these transmissions.
-------------------Engine--Gearbox--Gross----Torque----Overall
Transmission------Weight--Torque--Torque--Veh. Wt.--Conv. Dia.---Length
---Model----------(lbs.)----(lb/ft)---(lb/ft)----(lbs)-----(inches)----(inches)
Rear Wheel Drive:
TH-180C (3L30)--130/140----258-----440-----7716----9.6/10.24---26.29/28.11
TH-200-4R---------157------330-----550-----6000------11.73-----28.26
TH-300 (Jetaway)
TH-350
TH-400 (3L80)-----190------440-----885-----12000------12.20----29.30/34.48
TH-700-R4 (4L60)-167/184 --350-----650------8600----9.6/11.73--29.77/30.64
4L30-E-----------168/177---258-----440------7716----9.6/10.24--28.54/31.57
4L60-E-----------160/176---350-----612------8600----9.6/11.73--29.77/30.64
4L80-E------------260------440-----885-----15000------12.20----31.93/33.02
Transmission
--Model-----------First---Second---Third---Fourth---Reverse
Rear Wheel Drive:
TH-180C (3L30)----2.400---1.479----1.000------------2.000
TH-200-4R---------2.741---1.568 ---1.000---0.674----2.067
TH-300 (Jetaway)
TH-350------------2.52----1.52-----1.00-------------------
TH-400 (3L80)-----2.482---1.482----1.000------------2.077
TH-700-R4 (4L60) -3.059---1.625----1.000---0.696----2.294
4L30-E------------2.400---1.479----1.000---0.723----2.000
4L30-E Optional ---2.860---1.620----1.000---0.723----2.000
4L60-E------------3.059---1.625----1.000---0.696----2.294
4L80-E------------2.482---1.482----1.000---0.750----2.077
The difference between the transmissions is most likely the number of internal clutch plates. The main differences between models of the TH-4L60-E are: 1) different case, bellhousing, and extension configurations, 2) varying amounts of friction plates vs. steel plates in various clutch packs, 3) two different torque converter diameters.
Here are some power loss estimates:
If memory serves me the TH-400 takes approximately 45 HP, the TH-350 uses about 30HP, and the PowerGlide/JetAway uses about 20HP. I don't remember where I saw these numbers posted but they seem to fall pretty close to true. We used my friends '68 Chevelle as a test bed for the difference between the TH-400 vs TH-350. He picked up nearly two tenths by switching to the TH-350 behind his 327. He attributed this to 3 things:
1) the 350 weighed less.
2) the 350 has a slightly lower first gear (2.52 vs 2.48).
3) and finally the supposed HP loss difference.
The differences in loss also seem plausible when considering the size (mass) of the internals on each of these transmissions.
A4's are 22%. Gear Vendors unit is 1% on top of base transmission.
Still digging to find the 4L80 #'s
Last edited by V-10 Killer; 11-29-2004 at 04:39 PM.
11-29-2004, 04:04 PM
#2
thank you for posting most interesting imfo. l did noticed that you said that a th 400 took 45hp and the 350 used 30hp. if l might suggest something, you left out time. what l mean is that if you spin anything slowly it will take very little power. but now try to spin it as fast as you can as quick as you can and you will notice that it takes a lots of power to spin it fast and quick. a th400 or 350 will take a ton of power if you spin them QUICKLY. if you turn them slowly, as in a stocker, they both take very little power. time is it, if you are doing it quick, it better be light. kilgoretrans.com
