4L60e or TH400?

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Apr 27, 2015 | 06:41 PM

#21

SPRAYED 01

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From: Northwest side of Chicago

How about having FLT upgrade your level 4 to a level 7? They did my level 7 about 4 years ago and put a t brake in in. It is the most reliable part of my car. I launch with 5psi of boost and go 9s then drive home, 200 miles round trip. My car weighs 3850lbs.

Apr 28, 2015 | 05:38 PM

#22

tnmotown

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From: Cali

Quote:

Originally Posted by SPRAYED 01

Yeah that is an option as well.

I just want to leave hard off the line as I finally have a 9" rear to beat on. So was thinking the t-brake would help to stall up and improve my 60'.

Apr 28, 2015 | 05:48 PM

#23

SPRAYED 01

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From: Northwest side of Chicago

Ya the tbrake is awesome. Kind of expensive becasue you need a moroso trans pan thats like $250 bucks. But worth the money for sure.

Apr 28, 2015 | 07:59 PM

#24

Bowtiedford

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From: Indian Rocks Beach Fl

my 4l60e I foot brake and have 1:40's to 1:50 60's on 275 60 ET street radials and 3:55's

Apr 28, 2015 | 08:12 PM

#25

NHRAFORMULA00

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From: Manteno,illinois

You don't need a trans brake too stall a car up, see post 18. You need more converter and more rear gear.

Apr 28, 2015 | 10:43 PM

#26

tnmotown

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From: Cali

Quote:

Originally Posted by NHRAFORMULA00

You don't need a trans brake too stall a car up, see post 18. You need more converter and more rear gear.

I hear ya, but car is mostly street driven with occasional track use.

I did step up to a 3.90 gear from the previous 3.73's. Also added a bit more power so we'll see how it goes next time out.

Apr 29, 2015 | 08:00 AM

#27

NHRAFORMULA00

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From: Manteno,illinois

A turbo 400 has a first gear ratio of 2.48-1, lower
A 4l60e has a first gear ratio of 3.06-1, much higher, and will hit harder than the 400 with the same rear gear. A trans brake will not allow you to launch harder, it simply holds the car on the starting line so that it will not roll.