View Full Version : Built 4L60E or TH400 Swap???


XxApollynxX
02-08-2009, 12:25 PM
Well, I am pretty much at the point where I am now debating to go with a built 4L60E, or just swap a TH400, me having to buy a trans member, and getting my driveshaft shortned, or losing the OD gear does not bother me. From the stand point of which one will take more of a beating, and better performance I am thinking the TH400 due to me being able to get a trans brake. What do you guys think?

tptransmission
02-08-2009, 12:53 PM
I would go with the 4l80e, all the strength of a 400 plus overdrive.

performabuilt
02-08-2009, 01:13 PM
What kinda power do you have? And a transbrake is available for the 60e also

XxApollynxX
02-08-2009, 02:55 PM
Yeah, but for cost wise the Th400 is way cheaper to get rebuilt, to put a brake on, etc. Way more shops deal with Th400's

z28boy
02-08-2009, 03:50 PM
What kinda of power are we talking about? That will have a lot to do with how long you would expect one to hold up. 400 are great trans but no 4th gear on the street gets a little old after awhile.IMHO

Slvr00Bird
02-08-2009, 03:53 PM
I'd like to keep overdrive is why I've pretty much decided that my tranny move will be an 80E, but if not I'd get a built 350.. why the 400 over the 350?

kdavis
02-08-2009, 04:24 PM
both built and with a brake, which produces better results

performabuilt
02-09-2009, 12:00 AM
Yeah, but for cost wise the Th400 is way cheaper to get rebuilt, to put a brake on, etc. Way more shops deal with Th400's

True but for those that actually drive there car the savings on the build would quickly be wiped out with additional fuel cost

XxApollynxX
02-09-2009, 12:43 AM
True but for those that actually drive there car the savings on the build would quickly be wiped out with additional fuel cost

This is very true, but this is not my daily, and is more geared towards the track. I don't mind losing OD at all, as long as it will perform better.

Detoxx03
02-09-2009, 03:26 PM
I'm not an expert in this area but when I get a new tranny it will be an 80E

HEAVY_CHEVY
02-09-2009, 03:39 PM
I would go with the built 4L60. You say it will be more of a street/strip car, but unless its on a trailer you still have to make that haul to the track. It would get old driving that thing further than just down the street.

TurboAv
02-09-2009, 04:14 PM
I drive mine daily with my TH400 setup and it doesn't bug me at all. Especially with all the darn speed camera's here in AZ it keeps me honest, lol.

Shoulder Shaker
02-09-2009, 06:05 PM
I'd like to keep overdrive is why I've pretty much decided that my tranny move will be an 80E, but if not I'd get a built 350.. why the 400 over the 350?

I was told that the weight of the car have a lot to do with it. If you have a near stock weight F-Body you might want the 400 but if you are light you can use the 350. I might be wrong but that's what I have read so far.

Camaro396
02-09-2009, 06:06 PM
I would go with the 4l80e, all the strength of a 400 plus overdrive.

How much does a 80e weigh compared to a TH400? Does it take any more power to turn?

greenfbodyracer
02-09-2009, 08:55 PM
What kinda power do you have? And a transbrake is available for the 60e also

How about a manual valve body for the 4l60e??? I was thinking of going carb'd and I dont want to get a new trans.. Or is there still a way to run the electronic???

XxApollynxX
02-10-2009, 12:25 AM
The drivability doesnt bother me, I used to drive a 70 chevelle with a th400, reverse manual valve body, purple hornies, 12-bolt, 4.10 gears, and a spool it didnt bother me. I am very lax on the "street" sense of things and if I go to the track I have no problem trailering it out there. What I am looking for is what trans will be the best to make me go the fastest.

Camaro396
02-10-2009, 01:02 AM
I know a th400 is far lighter than a 4l60e. I'd imagine it takes less power to run a TH400 than a 4l60e also, but I'm not sure. I know their cheaper to build, especially as far as valve bodies/brakes go.

z28boy
02-10-2009, 04:06 PM
NO I do believe 400 weigh more. I believe I lost A little power when I made that move. th400 are very strong and take a lot of abuse and then some. But if it were me I would go 4l80 because of the extra gear, lockup etc. I am making that move this summer.

pddye
02-10-2009, 04:22 PM
I went to a th400 and so far I really like the switch.

Camaro396
02-10-2009, 08:26 PM
NO I do believe 400 weigh more. I believe I lost A little power when I made that move. th400 are very strong and take a lot of abuse and then some. But if it were me I would go 4l80 because of the extra gear, lockup etc. I am making that move this summer.

I don't know where you got your facts. My TH400 weighs 139lbs wet. A 4l80e is 255lbs wet.

z28boy
02-10-2009, 08:57 PM
My fault was in A hurry when i posted that I was thinking 4l80e and wrote th400. But if im not mistaken i did lose about 10 rwhp when i did go 400.

70LS1Nova
02-11-2009, 10:08 AM
I was in the exact same boat as you this time last year. After two 4L60E's in two years, I debated on the 400 or 4l60E. I ended up going with FLT and a level 5 4l60E. The FLT tranny is FLAWLESS, but I do regret on occasion that I spent an extra $1000 dollars on this package. The 400 would be just as strong, if not stronger, and would have cost me $1000 less to do. It will probably take me ten years to make up this money in gas savings, so don't do it thinking overdrive is gonna save you a ton in gas. Hell, half the time, I drive it around in third gear anyway. And, for what it's worth, I wouldn't buy a 4l60 from anyone but FLT.

Camaro396
02-11-2009, 11:26 AM
Overdrive is for sallys.

sidewayz28
02-12-2009, 12:02 AM
Overdrive is for sallys.

:jest:

400 if its not a daily.

Blazin95
02-13-2009, 06:17 PM
in the process of putting my TH400 in my trans am. encountering alot of wiring problems like the neutral safety switch

but other than that the acutal swap is going pretty well.

MelScrilla
03-19-2009, 10:00 PM
how hard is it to get a 80e into an f body because i've read that it is a giant tranny and would need lots of mods to squeeze it in

crzytown69
03-20-2009, 08:08 AM
i just don't like the idea of you loose a lot of tunning with a th400.... plus your winding your motor a good deal more when your driving 40mph and above if you have a good set of gears outback.... also when i added it up al the things i needed like a special TC, tranny cross member, drive shaft, and wiring ..... on top of that id have to have a retune bahhhh it ended up being almost the same price so i went with a built 4l60 from performabuilt...... make a list of what you want and the pros and cons of each such as cost and such

fastfreddy4ya
03-20-2009, 08:25 AM
This is very true, but this is not my daily, and is more geared towards the track. I don't mind losing OD at all, as long as it will perform better.

depending on your goals as far as speed is concerned i would definetly get the 400! way cheaper to build

Bersaglieri
03-22-2009, 12:40 AM
how hard is it to get a 80e into an f body because i've read that it is a giant tranny and would need lots of mods to squeeze it in

A different tranny mount is all I had to do. My first mount was homemade for the cost of welding.

-Dustin-

tee-boy
03-22-2009, 10:07 AM
I don't know where you got your facts. My TH400 weighs 139lbs wet. A 4l80e is 255lbs wet.

I'd hate to add 110 lbs just to get an overdrive and lockup.

RMVB and a brake on a 400.

HTX
04-01-2009, 04:44 PM
it sounds like you made your decision before you posted. Just do the TH400 like you want to.

01FbTaWs6
05-16-2009, 10:11 AM
th400/th350 is where its at. Im in the process of swapping from a 6 speed right now. Everyone gets used to there OD and doesnt want to let it go. It wont harm the engine abit. Does everyone remember pre-1990??? There was no OD. And they made TONS of cars before 1990. Hell a buddy of mine has a 55, drives it on the highway and interstate all the time, its at 3000 at 65. It was the norm 20 years ago. Not to mention the th400 will take everything you can throw at it, and is FAR cheaper then a 60e.

FiFdYnUtz
05-16-2009, 08:59 PM
yeah in your case i would just get the t400...i on the other hand drive my car 40+ miles on the weekends to hang out with other car people and such and dont want to deal with all the little things involved with swapping in a "different" trans setup..