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Old 11-09-2006, 02:51 PM
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Ford 4R70W torque converter interchange?

My '99 Mustang has the 4R70W automatic tranny with OD. It has a 12" converter and about an 1800rpm stall speed. Lincolns with the 4.6 "Hi-Po" motors had an 11" converter. This info I got from a fellow who reworks converters. The Lincoln converter has around a 1000 greater stall speed.
I am trying to find out one of 2 things that would allow a change to work.
1. Is the Mustang flexplate also drilled and tapped for the 11" converter which has a different bolt pattern?
2. Would the Lincoln flexplate bolt to my crank and have the same diameter as the Mustang flexplate so I could use the Lincoln plate and converter in the Mustang?
Any help or direction is appreciated, Mark

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Old 11-09-2006, 03:04 PM
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WHEW!

The LINC 4.6L is DOHC. Your is?

The convertor is controlled by the PCM. You need exact info on this one.

Contact -BAUMANN ENGINEERING- and see if they can advise you. That or FORD RACING TECH.
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