89 Aerostar 7.5 Posi on a 65?

P

prpony

New Member

Apr 4, 2005

33

0

0

San Juan Puerto Rico

Mar 30, 2008

#1

• Mar 30, 2008

• #1

Will a 1989 Aerostar's 7.5 posi internals fit in my 1965 7.5? if so, is it a bolt on swap or is there more.

 

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truck90278

New Member

Jun 4, 2006

382

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Redondo Beach, CA

Mar 30, 2008

#2

• Mar 30, 2008

• #2

the 1965 does not have a 7.5 unit, it's a 8", so no it won't

 

6

65kcode

Member

Mar 31, 2007

73

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Deer Park, WA

Mar 30, 2008

#3

• Mar 30, 2008

• #3

truck90278 said:

the 1965 does not have a 7.5 unit, it's a 8", so no it won't

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Actually the 6 cylinder's were a 7.5", but I can't answer the original question.

Kevin

 

Rusty67

Dirt-Old 20+Year Member

Dec 3, 2002

3,749

37

109

Seattle area, WA

Mar 30, 2008

#4

• Mar 30, 2008

• #4

I believe the later model carrier is part of the axle that has an inspection plate you remove and uses metric threads. The original axle should have a removable center section and be SAE thread. Basically if you want to make that fit it would be cheaper to upgrade to a posi 8".

 

9

96 DOHC Cobra

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Oct 14, 2001

542

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Cerritos, CA

Mar 31, 2008

#5

• Mar 31, 2008

• #5

65kcode said:

Actually the 6 cylinder's were a 7.5", but I can't answer the original question.

Kevin

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I think the 6 cylinder rears were 6 3/4" units. The 7.5" stuff won't work.