gearbox swap

[Karroulias97]

hello,guys....i have a datsun 620 1978...with J15 engine and 4 speed gearbox f4w71...and i want to find a 5speed gearbox..which 5speed gearbox can swap..in this engine?????and which are the work i should do! to fit it in the engine!!!!thanks!!!

[datzenmike]

Welcome to Ratsun Karroulias. I'm aware of the J15 engine being in other models of the 620 sold elsewhere like Mexico. I was not aware that the F4W71B was ever used in them, are you sure? Usually an F4W63 was used. If your transmission has a removable pan with a drain on the bottom it's an F4W63, like this?

 

 

Let me know what you have. Maybe a picture?

 

 

 

If you do have an F4W71B then yes, an FS5W71B five speed should fit right in as long as the lengths are the same. I don't know what would have one in Greece. Maybe...

 

'78 and up 280z

'79 and up non turbo 280zx

 

910 Maxima

'80-'83 S110 200sx

'84-'86 S12

'811-'86 720

 

The top two have six cylinder engines and would most likely have the 71B transmission. The other four might have smaller less powerful engines in Europe and have a lighter transmission. I don't know.

 

 

.

[KoHeartsGPA]

Doesn't have a "B" from what he wrote, don't know if that changes anything though, just figured I'd point it out so you can guide him correctly ;)

[datzenmike]

He might be assuming, he may have been told that's what it is, who knows. That would still need the front J series case swapped to what ever 5 speed he finds.