Re: 456 gt search
From: Todd Walke (racertodracertodd.com)
Date: Tue, 17 Jul 2007 19:49:27 -0700 (PDT)
Hans wrote:

Could be wrong, but I don't think that the 456 auto box is GM
derived.  I remember reading (Forza??) that it was sourced from
a small company in Michigan that may no longer be around.
The same article said that either whole units or parts were
somewhere between difficult and impossible to get.

They were made by FFD in Detroit, now owned by Ricardo (one of the premier transmission designers): http://www.motortrader.com/13380/Automatic-Ferrari.ehtml


        Note this reply from Ricardo concerning the GTA trans (from FChat):

"Thank you for your enquiry regarding the Ferrari 456GT automatic transmission.
For reference only this transmission was modified from a GM Northstar 4L80T (transverse V8) and some parts may be common to this transmission.
The supply and support to Ferrari of this transmission was handled by a separate company and any further details should be sought via Ferrari directly.
I hope that this is of some help."


Basically it's 4LT80T guts in a case designed to fit the 456. On the same FChat thread, some one noted that a shop opened one up to try to correct some defect and found mostly GM bits, but with several Ferrari-only parts as well.


Todd Seattle,WA '86 GTI, Red of course. (exciting racey car) 264,000 miles '87 Golf, Polar Silver. (boring work car) 600,000 miles <- Yeah, baby! http://www.pureluckdesign.com <-Ferrari & VW stuff


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