I want overdrive
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Senior User
Joined: Feb 2008
Posts: 122
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From: El dorado, Arkansas
I want overdrive
I have an 81 f150 with a 351m and a c6 tranny. I want an overdrive tranny. Can you bolt the bellhousing from the c6 to an overdrive tranny from a mustang or thunderbird? If not what are my best options?
Lead Driver
Joined: Dec 2002
Posts: 5,491
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From: Kuna ID
I want a solid gold toilet but it's just not in the cards. 
just kidding man.
The C6 has an integrated bellhousing so it's not removable. I think the 351M has the same bolt pattern as the 400/429/460. You could find an auto/OD tranny from behind a 460 and it should bolt up to your motor.
just kidding man.
The C6 has an integrated bellhousing so it's not removable. I think the 351M has the same bolt pattern as the 400/429/460. You could find an auto/OD tranny from behind a 460 and it should bolt up to your motor.
More Turbo
Joined: Jan 2004
Posts: 667
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From: New Jersey
The 351M/400 has the same pattern as the 460, so the big block E4OD transmissions might work (.71 OD gear), or:
http://www.transmissionadapters.com/Ford%20429-460.htm
...you can put a nice non-electronic AOD behind it using the above kit (giving you a 0.67 OD gear). Also, I believe Art Carr has kits like these as well but you have to dig a little on there website.
http://www.transmissionadapters.com/Ford%20429-460.htm
...you can put a nice non-electronic AOD behind it using the above kit (giving you a 0.67 OD gear). Also, I believe Art Carr has kits like these as well but you have to dig a little on there website.
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Joined: Jan 2001
Posts: 56,984
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From: Virginia
Torque convertors are not unbalanced to balance the engine. The flexplates and flywheels ARE unbalanced to balance the engine. The only internally balanced engine I can think of that Ford made was some of the sixes, like the 300.
