ive got a w50 going behind my CA as they are the same length as a a series box (or stumpy). way overkill for an a series motor. these are the iron case celica box they used to use behind ford and holden sixes and holden v8's
they are a more compact case than a later alloy case box
mine weighs 43kg with bell housing and fork
thanks bones i'll be looking at that site
dazza

Check out the following site:
http://users.tpg.com.au/users/loats/technical/ma61/gearboxes.html

All the facts, very informative, no BS

t50 will work just fine, I can tell ya its a hell of a lot lighter than a W58, and it can take a fair amount of punishment n/a, as my mates with 'rollas have proved. cheers

w50 way's 40kg's v t2 or t3 alloy case toyota 5 speed way's 26kg's..

Its not that they are to big but just needlessly big bulky and there would be a los in power due to friction, and a los in handeling due to weight

yeah i just found out a guy in town has a w58 behind his na a14 in a ute. but i dont have one, cant get one for free, and think that the t50 would be better due to sheer simpleness, the are the gearboxes we are mucking around at tafe with lol

Been running a W58 box in my ute for the past 9 years, never had any problems with it been tooo big.
Have 3 mates running the same, and know of at least another dozen running W50, W57 and W58 boxes.
If ya don't want to change bellhousing, just make a template up of both mating surfaces and then get some 10mm plate and then take it past ya local laser-cut shop anf have it fabbed.

The W50's are too heavy for a datsun. My old man runs one behind his 245 hemi. I'm going to run one in my charger too. WAAAAAY to big for a datto. A bloke I know adapted a silvia 6speed to his A15 b310 sunny rally car.

i have a bit of a habit of breaking dogs in datsun gearboxes but its not entirely my fault. and the non torquey part was my argument back. she only pulls in the hp region ie 5000 to 8000 as compared to a 4age or 4agze with a t50.

had a t50 behind the twin turbo setup and it wasn't an issue (went through one box but it was rooted when i got it)

also bought another dellow to t50 setup that was behind an a15 rally car and he seemed to be happy with it (he went ca hence not needed)

doubt you will break a t50 remember a series arent torquey
so i cant see you breaking one unless it wasnt in very good cond to start with (thrashed when behind the bigger original motors) and/or you are giving it a heap doing burnouts they dont tend to help with gearbox suriviability haha