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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Tranny question

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Old Oct 13, 2003 | 12:34 PM
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Wingnutt
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From: SW VA
Post Tranny question

I've got an '80 F-250 4x4 with a 300 I6 and four speed that has about 345K miles on it. After a few years of holding it in third gear (it pops out when you let off the gas), it's gotten so that I can't even hold it in gear, so I guess it's time to yank it outta there and rebuild it . I would like to order the parts (third gear, syncronizers and bearings) before I pull the tranny to save downtime, but I have no idea what 4 speed is in it. Could somebody help out? If you can't tell me, could you me to somewhere that I can find the info, or narrow it down to a few choices? TIA
 
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Old Oct 13, 2003 | 04:32 PM
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Big Orn
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From: NE Texas
Welcome to FTE!

More than likely you have the NP 435, but the other possibilites are the T170 and the T-19. If first gear (granny) is not synchronized, then it is an NP435.
 
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Old Oct 13, 2003 | 08:43 PM
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Nope 1st gear is not synchronized, must be a NP435. Thanks!
 
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Old Oct 13, 2003 | 09:05 PM
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From: Coutts Canada
Under the carpet on the drivers side there might be a build sheet (all heavy duty trucks have them) that will list the tranny.
 
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