71 f-100 custom

[1st71fordf-1004me]

hi all i just got a 71 f100 custom and after i looked at the vin i found that there was a 6cyl in it now there is a 302 from a 72 and the trans is a 4speed with granny low the vin is for a 3speed but the 4 speed wines and there is alote of play in the shifter its hard to hit 4th gear so if you could please tell me what trans it could be and how to fix it it would be great

[truckguy]

Is reverse up or down.
Kyle

[two-bit]

First off,
Welcome to the site.

Now, 4 spd could be one of two transmissions. Where is reverse?
over to the right and up? or over to the right and down?

Over and up is a T-18 Spicer
Over and down is a NP 435 (New Process)

As far as the sloppiness goes. That could be a lot of things. I would start with the obvious.
Pull the cover and check and make sure the cap that holds the shifter down is tight.
Then i'd check the pivot, make sure its got the right clearance and that your shifter isn't floating. (Forward, Backward, side to side)

If all that is good. Then its internal. At that point, i would replace it.
Cheaper to get a used 4 spd than totally overhaul one.

Good luck.

Two-bit

[truckguy]

Welcome to the site.
Posted at the some time. Were are you from?
Kyle

[1st71fordf-1004me]

to shift into rev its up and to the right but does the trans does make alot of wineing and when i got it he told me that he just but a clutch in it i will have to put some pics of it on here its a clean f100 no rust on it but the tail gate the only thing is he had 31s on the back and its only 2wd i just got alote stuff for the 302 seeing that it was rebuilt 17,000 miles ago i got a rpm airgap manifold proformer rpm heads,rpm cam kit and 650cfm proformer carb i droped $1700 for all of it so how much will a trans cost thanks for all your help

[TheEskimo]

Hi and welcome, sounds like a good truck. Can't wait to see pics.

[1st71fordf-1004me]

well all i looked and its a t-18 and i also found out that my speed od cable was on my exhaust and milted and i need to get another becouse its not working anyone now where i can get one and if its hard to replace and there is fluid coming out of it is that normal please help

[ima71 trucks are older]

most T-18s found in our trucks have reverse up BUT T-18s made after 77 have reverse in the same spot as a NP435 and bolt right in.

top cover material and case shape is a better ID.

Aluminum top cover and a 10 /34" long case smooth on the drivers side = NP435

Iron top cover and an 11 7/8" long case ribbed on drivers side = T-18