AOD Guys, Need Some Help!

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Aug 30, 2009 | 01:24 PM

bghnkinf250

Thread Starter

Fleet Mechanic

Joined: May 2009

Posts: 1,460

Likes: 6

From: Bay Area, Unfortunately

AOD Guys, Need Some Help!

Okay, I am considering an AOD swap because PYP is having 1/2 off day coming up. I am curious, this would go into an F-250 4wd with a 351. I have heard a lot of stuff about this trans, but do not plan to tow with this. I know I would need the trans, TC, flexplate, and TV linkage, is there anything else I would need? Could someone provide me with a measurement of the bellhousing face to the face where the transfer case bolts up? I am just looking right now, but if it gets too expensive to do the swap, then forget about it. The truck currently has 3.55 gears in it, so should I even bother? I am at about 2500 cruising at 60 mph, is this generally the sweet spot?

Any help would be greatly appreciated! (If this does not work, I might just get a Cummins or 7.3 I found there and do a Diesel swap) I probably will not end up with either, but I can dream - although the AOD swap might be closer to happening if I can keep minimal budget.

Thank you for the help!

Aug 30, 2009 | 01:34 PM

stanggt84

Senior User

Joined: Feb 2006

Posts: 153

Likes: 0

From: Selkirk NY

If you are replacing a manual trans you will also need a radiator that has trans cooler line attachment points or an external trans cooler (a good idea if you do any towing anyway).

Aug 30, 2009 | 04:32 PM

Eddiec1564

Cargo Master

Joined: Mar 2007

Posts: 2,935

Likes: 34

From: Arcadia, Fla

I have heard a stock AOD tranny may not hold up to a 351's torque. I was thinking about putting one on my 300 I6 but was told the same, the torque would twist up the OD input shaft.

Aug 30, 2009 | 05:52 PM

bghnkinf250

Thread Starter

Fleet Mechanic

Joined: May 2009

Posts: 1,460

Likes: 6

From: Bay Area, Unfortunately

I agree, and am thinking that maybe I should start looking for alternatives. I MIGHT start looking into a Cummins swap.....

Aug 31, 2009 | 09:18 AM

LARIAT 85

Cargo Master

Joined: Dec 2004

Posts: 3,362

Likes: 22

From: Florence, SC

There is a member here that goes by the name of Conanski that is usually found in the 1987 - 1996 forums. Look him up. He has been running an AOD behind his built 351 for about 6 - 8 years now. Ask him about it.