I just bought an 88 F150 4x4 5.0 with the 5 speed.I want swap it to the 4 speed with the granny gear,which ones will fit?

 

Anything from a "small block" 302, 351W, 300 will physically bolt up. I don't know about it being a "bolt in" as far as mounting it and driveshafts, linkages, etc go. You might also want to consider the zf5 from a 351w in a heavy duty truck, it has the granny low and also retains overdrive. A lot of people go that route.

 

Personnally I would go with the ZF it has the granny gear like the 4spds but also has the overdrive gear which is awesome for a little extra mpg. Plus if you have a 5spd right now it is going to be a hydralic clutch while the 4spds will not be. The ZF is hydralic just like your current 5spd so you dont have to convert anything.

 

Speaking from personal experience I would go with a ZF hands down over the old granny 4 speed in your situation. Although I think the old cast iron 4 speeds are much stronger than the ZF. Not only that they have a lower "granny gear" than the ZF... NP435 has a 6.69 the ZF has a 5.72, I can't remember what the BW T18 had.
The main reason I would go with the ZF is because it is a bolt in swap from the M5OD. It uses the same: flywheel, clutch assembly, pilot bearing, slave cylinder, reverse light switch, transmount, crossmember, etc. The transfer case will bolt right up to it and there are no alteration to driveshaft lengths. It is truly a bolt in swap, I did the swap on my 96 F150 300 six as part of a 4wd conversion... it was originally an M5OD equipped truck. I love the way it's geared, perfect for a DD and occasional wheeler.

 

Hey guys,I really appreciate all the great info.I'll probabaly be asking a few more questions later on.
Thanks again,
Chitlin

 

otherwise an NP435, BW T-18 or T-19 would work.

I agree though that the ZF is a far better choice

 

Now the next question is where do I find one for a reasonable price.I'm in Middle Ga. so I may have to get one shipped in.

 

craigslist or a junkyard will be the cheapest. you can buy rebuilt units, but they are pretty pricey. just make sure you get a small block pattern case. the bell housings are integral, so you can't change the bell pattern.

 

I hear Dan LOVES used "trannys"

 

Again,I appreciate the info.

 

it's not my fault you and karl got to paul's sweet virgin *** before i could :flipoff:

 

wait, i just realized that these two posts disturb the hell out of me.
i don't sway that way newb

 

The np435 or bw t18-19 would be your cheapest easiest way to go. But like alreayd said a zf would be the nicest.

 

Maybe maybe not. Most junkyards around me are you pull yards which means they charge the same for any rear wheel drive transmissions. So actually it would be cheaper to go with the ZF because the ZF is a direct bolt in swap while the others would require a little modification to work with your truck. It can be done but isn't a complete bold in swap like the ZF is.

 

I can't wait to drive my ZF swapped pickup........