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Tranny swap?

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papawfalcon
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Joined: Thu Nov 14, 2002 9:10 pm
Location: West Frankfort,IL

Tranny swap?

Post #1 by papawfalcon » Sat Jun 12, 2010 2:36 pm

My son wants to put a C-4 in his '63.The tranny works fine was told it was rebuilt? The problem is he wants a daily driver that can go 65-70 mph on the interstate we live on the interstate.What is the 2-sp worth and do we need to change the rearend if so what gears. I know that if the rearend was changed that it would need a maverick. Thanks Ken N.
FALCONS AND RANCHERO'S FOREVER

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rbohm
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Re: Tranny swap?

Post #2 by rbohm » Sat Jun 12, 2010 8:19 pm

8) the two speed ford o matic and the three speed C4 have the same top gear ratio of 1:1, thus top speed wont be changed. now depending on what rear end ratio he has, 65-70 should be an easy thing to do. my 64 falcon goes that fast with a motor that is losing compression while pulling a 600lb trailer, and a trans missing second gear. i have the 3.20 rear end gear.
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66 mustang
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papawfalcon
Registered User
Posts: 389
Joined: Thu Nov 14, 2002 9:10 pm
Location: West Frankfort,IL

Re: Tranny swap?

Post #3 by papawfalcon » Sun Jun 13, 2010 2:59 pm

pulled the rear-end tag off eairler and cleaned it up. Tag read 3.10 will that gear work for me if im running 65-70 mph
thanks nick
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rbohm
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Joined: Fri Nov 08, 2002 4:00 am
Location: Tucson, AZ
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Re: Tranny swap?

Post #4 by rbohm » Sun Jun 13, 2010 9:39 pm

8) yep that will do fine. my falcon has the 3.20 gear and it can run 75-80 with no issues.
64 falcon
66 mustang
05 grand marquis

my mind is aglow with whiriling
transient nodes of thought
careening through a cosmic vapor
of invention

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