Re: [Amc-list] fsj 232/th400 [was: AMC Ads]

[Frank Swygert <farna@xxxxxxx>]

The bell wasn't shallow to accommodate the adapter ring. It was shallow 
because of the Buick Nailhead engine design. That version of the 
transmission was sold as a "universal" trans because the design happened 
to lend itself well to adapting. Kept GM from making another trans. The 
Nailhead trans case was continued in production for a few years after 
Nailhead production stopped, I believe, to supply those using adapters. 
I suppose production rose to the point for most using the adapted trans 
that it was worth buying specific cases for their engines.

Spro wrote:
> I've had a number of the nailhead TH400's over the years, but I didn't know the bell was shallow to
> accommodate the adapter ring.  I have a nailhead/adapter ring TH400 in a 73 J-4000 with an AMC 360.
>
> -Spro
>
> -----Original Message-----
> From: Frank Swygert [mailto:farna@xxxxxxx] 
> Sent: Thursday, July 12, 2007 10:14 PM
> To: msproviero@xxxxxxxxxxx; amc-list@xxxxxxxxxxxx
> Subject: re: fsj 232/th400 [was: AMC Ads]
>
> Spro, you didn't miss anything much, just don't understand how the early 
> Jeeps w/AMC engine fitted a TH-400. The AMC TH-400 case didn't come 
> along until around 1972 or 73. It was used through 1969. Prior to that 
> the "universal" model TH-400 (same as the Buick "Nailhead" case/bell -- 
> it was also sold as the universal to other makers because the shallow 
> bell left plenty of room for an adapter -- the old Buick Nailhead had a 
> deep flange on the back of the block) was used with a cast iron adapter 
> ring 1.5"-2" thick. The ring was used mostly with the AMC 327 (65-67 in 
> FSJs), but some Jeep sites report that a similar setup was used with 
> 71-72 AMC V-8s. The 327 has a different bolt pattern than later AMC 
> V-8s, of course.
>
>   


-- 
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
(free download available!)

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