200ci with AOD trans

Has anyone messed around with a 200 ci engine and a AOD trans. to try to put them together? Can it be done with out any mods?

I was just wondering that same thing only with the 240

I know someone who has done it with a 200 and he comes to Carlisle every year with it. It's doable with a 240 also since many 300's have AOD trannys and they share the same block as a 240.

200/AOD is do-able, but the 200 block
that will work was only produced for 2
years. (It has the small-block V8 bell
pattern.)

I'm doing something similar, but using
the 250 six and the 4R70W transmission
which is a programmable version of the
AOD (using a laptop)and has the engineering
improvements for the issues that plagued
the early AOD's...

SDEconoTruck wrote:200/AOD is do-able, but the 200 block
that will work was only produced for 2
years. (It has the small-block V8 bell
pattern.)

I'm doing something similar, but using
the 250 six and the 4R70W transmission
which is a programmable version of the
AOD (using a laptop)and has the engineering
improvements for the issues that plagued
the early AOD's...

Just wondering about a 250 six ??? What did they come in originally ??? Parts available still ?? and from what years to what year were they made ??? Thanks' for any input you might have on this ..


Also will it mount in place of the 170 - 200 with no mods to the crossmember ??

SDEconoTruck wrote:200/AOD is do-able, but the 200 block
that will work was only produced for 2
years. (It has the small-block V8 bell
pattern.)

I'm doing something similar, but using
the 250 six and the 4R70W transmission
which is a programmable version of the
AOD (using a laptop)and has the engineering
improvements for the issues that plagued
the early AOD's...

Some 200s have bolt patterns for both bell housings. Mine does

EconoUSAparts wrote: I know someone who has done it with a 200 and he comes to Carlisle every year with it. It's doable with a 240 also since many 300's have AOD trannys and they share the same block as a 240.

How well did it work with the 200 any info on that and is it pretty much a bolt up or custom mods to bolt it all together?

bumpbug wrote:

EconoUSAparts wrote: I know someone who has done it with a 200 and he comes to Carlisle every year with it. It's doable with a 240 also since many 300's have AOD trannys and they share the same block as a 240.

How well did it work with the 200 any info on that and is it pretty much a bolt up or custom mods to bolt it all together?

You have to have the 200 with the big bell housing or one with both. you will also need a shorter drive shaft. Vic(oldskool) can tell you everything you need to know.

Hey Vanish,
The 250 cu.in. is found in Mavericks, Granadas, and
Mustangs. The 250 is considered a stroked 200 but the
block dimensions were pushed out from the 200/170/144
block. It's about 1-5/8" taller, 3/4" wider (1-1/2"
wider at the motor mounts,) and 1" longer. The mount
holes in the block are in the same spot as the 200, and
same pattern. The bell bolt pattern to the transmission is
the same as the small block V8, so some of the modern
multi-speed overdrive transmissions can be used as an
option. If you can put it on a 302, it will work on
the 250. The crank bolt pattern is the same as the
300 six used in a lot of cars/vans/trucks.
The cylinder heads for the 144/170/200/250 interchange
but the combustion chambers might be the wrong volume.
(the desirable heads are from 1978 and 77, which with
a little bowl work and unshrouding, will flow nearly as
well as the new stock aluminum head that has recently been
made available for these sixes.)

The 144/170/200/250 is considered the "Small Block Six."
The 240/300 is considered the "Big Block Six." I haven't
done much work with the 240, but the 300 can be made into
a beast, as can the 250, with the 250 being quite a bit lighter.

Hi Mike,
Yeah, I've seen all three types. There is a small pattern
200 which was from (I think) Fairlanes, it had 5 freeze
plugs instead of the usual 7. Then then most common is the dual
pattern which takes two kinds of bell housings for straight
six motors, like the C-4 bell housing. The last one is the
very rare 200 that has a single Small Block V8 pattern. I
think they were offered in the mini Bronco in 1980 and maybe
one other vehicle. I've only seen two for sale over the years,
and never in a scrap car.

The 240 and 300 have the more modern pattern to take some
overdrive transmissions, however care must be taken in
selecting the right flex plate and matching starter to make
things work.

All the sixes are naturally balanced, so trying to mount a
V8 transmission will require care when choosing the flex plate
and sometimes the torque converter (for automatics.) The
V8's are NOT naturally balanced and weights are welded to the
flex plate and work with the front crank pulley to smooth things
out for the harmonics of the twisting crankshaft.

Hope this helps,
George

Oh I should also mention that the 250 should
only be mounted to a crossmember bar and NOT
the earlier arm mounts, as they won't last long.

The mounting points would ideally be cut and
re-welded, but I've heard of conversions done
by elongating the mount/crossmember holes and
the motor will ride about an inch higher.

One caveat:
mixing and matching the driveline can be dangerous
and destructive. The main thing to consider
is the driveline harmonics or driveshaft phase
matching. Input angle of the axle pinion MUST
be parallel with the output of the transmission.
This is seen from BOTH the side view and the top
view. Even being off a degree or two will result
in weird dull oscillations at certain speeds.

Driveshaft failure is likely.

Wedge shims are used at the rear axle/spring mount
to fine tune this angle.

Also the engine incline angle is important
for good carburetor function...

I have a 200 with what seems to be a small block bell bolt pattern(302) it must be a 302 pattern because my tranny from the original 170 did not match up, 170 bell housing was much smaller. If any one is interested I'll let it go cheap. Has new pistons, bearings and oil pump. Also have 170 head off my 65 that needs a rebuild

hey Score602,

Is the starter high or low?


High starter is above the line of the oil pan.
Low starter is below the line (see pic above)

If the starter is low, it is the fabled 200 cu in. with
a V8 bolt pattern.

George

Not sure off hand have to check , nice headers I have same ones!