Ferrari Mailing List: Re: 400i manual

[Fellippe Galletta (fellippe.galletta]

On Thu, Dec 4, 2008 at 8:32 AM, Hunter N. Schultz <hns [at] 
biosafepanama.com>wrote:

> Hi,
>
> Ferrari screwed up when they installed the wrong torque converter in the
> 400 THM tranny. It needs a 2800 to 3000 rpm stall speed converter
> instead of what I think is a 2100 rpm in there now. That one simple
> change makes the car a beast. That's the way a good Ferrari mechanic
> explained it to me anyway.
>
> Also, there are newer GM trannys that might work since the control units
> are now programmable with after market control modules. No need for all
> the computer hookups.
>
> I would try the torque converter route first. If that doesn't meet your
> standards, then talk with a GM tranny expert at a Hot Rod shop. As I
> understand it, this is a popular upgrade for older GM cars with the THM
> 350 and 400 units.  I think the new tranny is the 4L65-E.
>
> If you go that route, make certain you research the hot rod forums where
> some very bright people are dealing with far more horsepower -- try 1000
> running through their automatics.
>
> Regards,
>
> Hunter


Agreed...

That's why I find it laughable when I hear that automatics are
fragile....some are, for sure, but the hot rod GM and ford trans are not!

FG