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351m trans?

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Old Jun 10, 2010 | 07:56 PM
  #1  
black water's Avatar
black water
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351m trans?

im prob retarded but i cant seem to figure out what trans and transfer case my truck has. all i can find is i think the casting numbers C96391 on the trans and G11415 on the t-case. its a 4 speed manual. the trans slips out of third gear all the time and i dont know what the prob is and would like to find another trans for it but have no idea what one i have and what ones i can use to replace it without having to change other parts.
any help will be much appreciated thanks!


77 F150 short box 4x4
 
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Old Jun 10, 2010 | 09:00 PM
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not sure about the trans.

but what is the shift pattern for the transfer case?
 
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Old Jun 10, 2010 | 09:28 PM
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the shift pattern onthe tcase goes..

4low
N
2hi
4hi

all the id tags are ripped off this old thing so it makes it hard to see what everything actually is.

think the trans might be a NP435..if that helps any cheers!
 
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Old Jun 10, 2010 | 10:31 PM
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Originally Posted by black water
the shift pattern onthe tcase goes..

4low
N
2hi
4hi

all the id tags are ripped off this old thing so it makes it hard to see what everything actually is.

think the trans might be a NP435..if that helps any cheers!
that would be a 205 tcase
 
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Old Jun 11, 2010 | 12:20 AM
  #5  
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thanks for your help joerickson!! now just gotta get the trans figured out
 
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Old Jun 11, 2010 | 01:25 AM
  #6  
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shift pattern for the trans is reverse on the left or right ?
 
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Old Jun 11, 2010 | 02:09 AM
  #7  
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reverse is on the right hand side. rear right hand.
 
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Old Jun 11, 2010 | 07:42 AM
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Originally Posted by black water
reverse is on the right hand side. rear right hand.
should be a np435
 
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Old Jun 11, 2010 | 09:46 AM
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ok its a np435 then
 
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Old Jun 12, 2010 | 02:05 AM
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pull ur trans plate out of the floorboard or if you can tell from the bottom a np435 has a aluminum housing on the top that house the shift forks in and a t-18 doesn't but you can swap in a t-18 or a different np-435 and not swap anything at all but the t-18 is geared slightly higher.
 
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Old Jun 12, 2010 | 02:37 AM
  #11  
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As original: 1978/79 F250 4WD 351M: New Process 435 4 Speed Manual Transmission

Not sure? Pull the rubber boot from around the shift lever...look at the cap that retains the shift lever to the tower.

New Process 435: The cap is notched, retained by two pins that protrude from the tower. The cap must be pressed down and held down while turning it to remove it.

Warner T-18: The cap threads off/on.
 
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Old Jun 14, 2010 | 01:11 AM
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k awesome thanks alot guys. i am new on here and appreciate all the help. so ive established ive got a 77 351m with a np 435 with a np205. now i guess all i gotta do is figure out why my trans is falling out of third gear. so if you got any help on that , thatd be great
 
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