4l60e to th400 conversion
Registered User
Joined: Mar 2002
Posts: 3,634
From: Newark, Delaware
Re: 4l60e to th400 conversion
Originally Posted by n20ta2
Hey 12scndz Im running a turbo 350 with a turbo 400 style HD drum& sprag made by TCI,hughs racing rebuild kit and a turbo action reverse pattern valvebody with a brake.It cost me about 1300 to build and has proved itself super strong with over 2 dozen runs into the 9 second zone, As you are probably aware turbo 350's can be built to handle some serious power with the right parts. I do have an earlier 700r4 core I was tempted to build but im not convinced it would handle the power im making let alone the new and improved engine im building,What are your thoughts?
Frank
Registered User
Joined: Mar 2002
Posts: 3,634
From: Newark, Delaware
Re: 4l60e to th400 conversion
Originally Posted by Evil Eric
i totally agree with you on that. i wish there was someone 'capable' within towing distance of my home. but i guess there is nothing much you can do, comes with living in a small town.
Frank
Registered User
Joined: Dec 2001
Posts: 953
From: Montreal, Canada Not Quebec
Re: 4l60e to th400 conversion
I have spoken to people running in th every low 11s with a CPT Trans and they had noting but GREAT things to say about CPT thats why he is building mine and this spring I plan to run high to mid 11s and the trans isnt even a worry because I know Frank does awsome work and stands behind it to!!
Thread Starter
Registered User
Joined: Mar 2004
Posts: 410
From: amherst ny
Re: 4l60e to th400 conversion
alright 12SCNDZ if your 4l60e's are built so solid what kind of warranty do you offer with them? cause i dont know anyone that has put serious power behind a 4l60e without either paying a load of cash or having it die. most 4l60's i've seen advertised are only rated to like 575-600 hp and cost around 2500. and to the guy who commented about that dude on trucks putting the gv in, if your being sarcastic thats not where i got my information from thanks.
Registered User
Joined: Jul 2003
Posts: 700
From: Upstate New York
Re: 4l60e to th400 conversion
The stock GV unit will handle 1200 hp.
I have one behind a 4l60e as a 5th gear for my A4 w 3.73's.
It's great as an OD but impractical to use to split the lower gears. You have to manually shift the gears in conjunction with turning the GV on and off.
I have one behind a 4l60e as a 5th gear for my A4 w 3.73's.
It's great as an OD but impractical to use to split the lower gears. You have to manually shift the gears in conjunction with turning the GV on and off.
Registered User
Joined: Mar 2002
Posts: 3,634
From: Newark, Delaware
Re: 4l60e to th400 conversion
Originally Posted by darthrug
alright 12SCNDZ if your 4l60e's are built so solid what kind of warranty do you offer with them?
Frank
CPT
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Joined: Dec 2004
Posts: 655
Re: 4l60e to th400 conversion
Originally Posted by 12SCNDZ
6 month on parts / 1 year on labor for my "Race Rebuilds".
Frank
CPT
Frank
CPT
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Registered User
Joined: Mar 2002
Posts: 3,634
From: Newark, Delaware
Re: 4l60e to th400 conversion
Originally Posted by LT4orbust
what are the parts that break on the 4l60e under higher hp
Nothing in our transmissions
In stock form...sun shell, and reaction input hub (front support). We upgrade both of these. The sun shell is included in all our $1000 rebuilds, but the front support is a $225 option. It includes 3 pieces that are all from the 4L65E.You mostly see repeated burnt 2-4 bands and 3-4 clutches in high RPM 60E's. Fortunately, we have the solution to keep them alive in racing applications.
Frank
CPT
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