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Old Dec 5, 2004 | 04:46 PM
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Lightbulb 302 3 speed

I have a 78 f100 with a 3spd and i would like to replace it with a 4spd or maybe a 5spd could anyone tell me what will work. Thanks
 
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Old Dec 5, 2004 | 09:04 PM
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You can use a Borg Warner T18 or T19 or a New Process NP435. Both the T18 and NP435 came stock on Ford pickups for about 25 years, mostly during the 1970's and '80's. All of these trannys have a 'granny' low first gear, although the T19's granny is not as low as the others. None of them have overdrive. The T19 is full-synchro and the other 2 are synchro'd in 2nd, 3rd, and 4th.

As for a 5speed, there is the ZF 5-speed used in '80's - '97 trucks. It has a granny first and an overdrive 5th. It also has a hydraulic clutch that may cause some installation issues. ZF's are one-piece case and bellhousing, so if you do decide to swap one in, make sure you get one to fit your engine, since Ford uses so many different bellhousing bolt patterns on their engines. You can use one from a 2wd truck with a 351W, 302, or 300 inline-6. These transmissions are mostly found in F250's and F350's.

Another option is a New Venture NV4500 5-speed. This one also has a granny first and an overdrive 5th but does not have a one piece case and can use a mechanical clutch. It was not used by Ford, but can be used in a Ford. www.wildhorses4x4.com has some info about putting an NV4500 in an early Bronco originally with a 3 speed.
 

Last edited by SoCalDesertRider; Dec 5, 2004 at 09:07 PM.
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Old Dec 6, 2004 | 12:25 AM
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You can go with a toploader 4 speed if you like the hot rod thing:

http://www.4speedtoploaders.com/

You can go with a T 5 if you aren't going to haul big loads, or other T trannys listed:

http://www.ttcautomotive.com/English...s/T-56.asp#Car


You can go with the 4 speed OD that ford put in, the toploader looking one. See the 4speed toploader site, ID chart, toploader imposters, or go here:

http://www.motivegear.com/tech_info/...nny_guide.html

Almost all this stuff is more hot rod car like vs. the truckular zf and others listed earlier.
 
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Old Dec 6, 2004 | 02:54 PM
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no this truck won't be hauling anything i don't need a granny low
 
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Old Dec 6, 2004 | 03:44 PM
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OK, consider the T5. The toploader OD's are weak, but if you are not going to hotrod, they can be had cheap. Real top loaders have tall 1st gears for a truck, but will work. No OD though.

The T-5:

http://pages.prodigy.net/al.martin/T...d-T5-Data.html


Happy shopping!
 
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