Re: [AMC-list] AMC V8 bellhousing patterns - confirmation?

["Armand Eshleman" <aje1@xxxxxxxxxxxxxxx>]

The only note I think needs changing from Davis' post on engine deck height 
is that the deck height from 67 to 69 was the same, 1970 and newer the deck 
height was increased. 1970 and newer engnes have dogleg exhaust ports. 1969 
and olde have rectangular exhaust ports
You can identify 1969 and older engine blocks by the 7/16 inch diameter 
headbolts. 1970 and newer used 1/2 inch diameter headbolts. Davis is correct 
with the pre 1972 bells being unique to the inline six or the V-8s. 1972 and 
after the bells are interchangeable between v-8s and inline sixes. Service 
blocks (replacement blocks from the factory) came with a "universal" bore. 
These blocks do not have an engine CID cast on them.

1971 and older engines have a certain style crankflange. 1972 saw the 
introduction of Chrysler automatics to AMC which prompted a new style 
crankflange. The two are interchangeable with adaptors and some machining.

Some one please jump in here if I'm wrong.

Armand


----- Original Message ----- 
From: "Davis" <martin-davis@xxxxxxxxxxxxx>
To: "AMC, Rambler, Nash, Jeep and family" <amc-list@xxxxxxxxxxxxxxxxx>
Sent: Saturday, April 02, 2011 12:56 PM
Subject: Re: [AMC-list] AMC V8 bellhousing patterns - confirmation?


> Yes from 1972 up the AMC 6 and 8 share the same bell pattern. And yes the 
> raised # under the motor mount bracket is the CID. 1967 to 71 the deck 
> height was lower on the v-8 and the bell on the 6 was different.
> Davis
>
> Sent from my iPhone
>
> On Apr 2, 2011, at 12:41 PM, Lynn Howell <lynnhowlyn@xxxxxxx> wrote:
>
> > Do I understand correctly that essentially ALL of the AMC V8's (304, 360 
> > and 401) share a common bellhousing pattern and that they all have the 
> > same physical dimensions?
> >
> > And that the V8 bellhousing pattern is the same as a 258?
> >
> > Meaning it's safe to assume any bellhousing (or auto trans) that'll bolt 
> > to a 258 will "bolt on" to a 304, 360 or 401?
> >
> > Any variations to the above in "some" years engines .... 258's or V8's?
> >
> > Also that an easy way to determine displacement for any given block is to 
> > look for (look at) the raised numbers cast into the block .... e.g. a 304 
> > will have "304", cast into the block, a 360 will have "360" and so on.
> >
> > Many thanks
> >
> > Lynn in St George
> > (long time lurker 'cause my CJ7 Jeep has so much in common with AMC's)
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