1998MysticZ28

iTrader: (10)

I need some help and some opinions. I have a 4L80e at the house I was gonna put in our turbo car. I'm just curious as what you guys would suggest it's a stock 4L80e and I was just gonna through it in and see how it does. Isn't the limit of these around 600-700 hp. My problem is everything to build this trans is expensive and I can get a built th400 for a good amount less.

Should I stick with the 4l80e and put it in stock or go the different route with the tried and true TH400.

Car is a 370cui with a Borg Warner s480. Read end is a ford 9" with a 3.50 gear.

high n dry

iTrader: (18)

Depends if it's a "race" car or street car.
Race car= th400
Street car= 4l60e
Either way, u can't go wrong!

Jake's Performance

iTrader: (2)

As stated above it really depends on what the car is gonna be used for.
The 4L80E is tried and true. It's been proven many times in the 8s and we have customers running them in for years now in the 9s and 10s without even a freshen up.

Just about anyone can build a 10 second capable TH400 or 4L80. It's a different ballgame to build either that lives in the 8s or faster. There is a learning curve there that many supposed performance shops haven't experienced.

mrvedit

I'm sure he meant:
Street car=4L80e

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Personally I greatly prefer an electronically controlled trans. I adjust the shift points, 200 rpm at a time, at the track to find the best performance for my frequent engine mods. Of course I have tuning software at the track and log every run.

Jake's Performance

iTrader: (2)

4L80E behind 632 BBC doing sled pull. 3rd gear launch, locking the converter during the run.