521 trans in 80' 510?

[Larsonian]

would i be able to fit a trans from a 521 into an 80 510? 

[datzenmike]

Uh... no. The PL521 was an L series engine. The '80 A10 had changed from L to Z series that year. You would need an '80-'81 A10 (HL510) 4 or optional dogleg 5 speed for a fit.

 

If you can find a 26" 'Shorty' 5 speed from a later 2wd 720 that would fit for length and engine fitment. May have to mod the transmission mount. The longer 31.5" 71B 2wd 4 or 5 speed from the 720 truck with Z20/22/24 series engine and the 5 speed from the '80-'83 S110 200sx will bolt up but the dive shaft will need to be shortened about 5.5" and the mount modded. I say 2wd because 4x4 have no speedometer drive.

[Larsonian]

would it not be possible to get a different bell housing or to even make an adapter plate?

[datzenmike]

The F4W63 was used with J, L and Z series engines. It has two piece construction. A tail shaft and a front case holding all the gears and the bolt pattern for the engine it is mounted to. If you have the '80 transmission you could swap all the interior parts from the 521 4 speed into it.

[Larsonian]

Well could i also just machine an adapter plate? 

[datzenmike]

Sure. It mustn't space the transmission to the rear much or the starter to flywheel and clutch engagement will be affected.

[Larsonian]

how much space would be too much before it affects it?

[datzenmike]

I really don't know, have never used one.

 

 

[Larsonian]

alright thank you very much this has been helpful

[banzai510(hainz)]

On 7/17/2023 at 2:52 PM, Larsonian said:

Well could i also just machine an adapter plate? 

How about just get a later 77-79 trans 5 speed It be cheaper.

 

I know you have this 521 trans laying around and will to spend big bucks to put something in that another guy has laying around dont make sense