Transmission Question
#1
Launching!
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Transmission Question
Is the 4L60E the same thing as the TH350? but with electronic controls? And with all this T/M B.S is chevrolet basically saying their trans. aren't ****...or is it for the grandpa driver just cruising to the grocery store once a week? A GOOD built trans should not need "protection" for a longer life....so I don't want to hear that! B/c the old Th350's were proof! Thanks guys!
#3
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The 4L60E is a light duty car/truck transmission that is not designed to handle a lot of horsepower. If you want a stout transmission go for the 4L80E. Its basically a TH400 with OD. Im not sure what the 4L60E is based on. Maybe what GM had laying around in a scrap pile but definitly not the TH350.
#4
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these transmissions arent made to handel a mass amount of hp... its meant to tow to its capabilities and meant to be driving NORMALLY.. not how we race them, lol. But a well built 4l60e or 65e (same thing basically) can be built up to handle in the ballpark of 500rwhp w/o t/m. Only problem with 4l80e is that it robs a lot hp, more so than through the 60e drivetrain... 4l80e is a good idea if your eventually wanting to go FI or build a motor in the 500+ hp range.
#5
Originally Posted by SSlow 4.8
Only problem with 4l80e is that it robs a lot hp, more so than through the 60e drivetrain.
Fellow294,
The 60e is not an electronic th350 and arent related in any way that Ive seen, read, or heard of. However, the 60E is an electronic version of the 700R4. The break down is basically like this:
700R4=non electronic controlled 4spd OD trans
4L60=700R4 when GM decided to change the name in the early 90s.
4L60E=Electronic controlled 700R4/4L60 (thats where the E comes from).
There are differences between the above models as well as updates during the production run but most of the basic gear train is interchangable either in pieces or sub assemblies from the early years to the present time.
The 4L80E as was stated is a direct relative of the th400 in so much that quite a few of the parts in the 80e will interchange between it and the th400. Its safe to say (generally speaking) that an 80e is a th400 with electroinc controls and overdrive added.
If you can swallow the cost then theres no comparison between an 80e and a 700/60e. Hell, the OD clutches in an 80e are bigger in dia than the entire pump thats in a 60e .
#7
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The closer ratios of the 80e trans over the 60 e trans help with shift recovery. The rpm drop is less with a close speed trans than with a trans with wide ratios like the 4l60e/65e/70e transmissions.
the 80e is much better trans internally with much better shifts as it doesnt have any nabnds like teh 60e series trans does. Clutches and steels all the way baby.
peace
Hog
the 80e is much better trans internally with much better shifts as it doesnt have any nabnds like teh 60e series trans does. Clutches and steels all the way baby.
peace
Hog
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#9
Originally Posted by hog
The closer ratios of the 80e trans over the 60 e trans help with shift recovery. The rpm drop is less with a close speed trans than with a trans with wide ratios like the 4l60e/65e/70e transmissions.
the 80e is much better trans internally with much better shifts as it doesnt have any nabnds like teh 60e series trans does. Clutches and steels all the way baby.
peace
Hog
the 80e is much better trans internally with much better shifts as it doesnt have any nabnds like teh 60e series trans does. Clutches and steels all the way baby.
peace
Hog
BTW, the 80E does have bands....two of them to be exact compared to the 60E's one band. However, one band of the 80E is prolly heavier and has more friction surface than two 60E bands LOL. Comparing the internals of a 60E to the internals of an 80E is like comparing a 100lb weakling to a 350lb power lifter....as in no comparison and the 80E is a brute of a trans hands down.
#10
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I've heard people claim the 700R4 was based upon a TH350. I guess it sure didn't inherit the the claim of being bulletproof. Parasitic losses for the TH400 is 45hp, the TH350 takes 30hp and the powerglide take a staggaring 20hp.
Here's a great GM transmission reference:
http://www.442.com/oldsfaq/oftrn.htm
Here's a great GM transmission reference:
http://www.442.com/oldsfaq/oftrn.htm