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Hello

I am getting all the bits together for my '66 S, I have 3 transmission casings, one with no breather boss, one with the boss but not drilled and one with the boss drilled. I am pretty sure it is not the last one, but should there be a boss or not. Can't quite see in the Parnell book.

Many thanks
Mike

I believe that it should be the one with no breather boss.

However, I have a factory replacement power unit fitted to a 67 and it has the drilled one in it.

Not 100% sure when the replacement was purchased - I think it was 71

That would make sense, I had a '72 GT and that had the beather.

This is an interesting dilema between originality and practicality. I know from my Frogeye that poor breathing causes oil to escape through the crank seals, however I plan to fit the original device to the manifold to aid the breathing with the vacuum so will probably go with the 'no boss' option

Thanks for your response

There are 2 types of clutch housings with no breather. Yours should be like this one:

http://i1212.photobucket.com/albums/cc4 ... CN0093.jpg

http://i1212.photobucket.com/albums/cc4 ... CN0096.jpg



The other type has a 'flat' top with a thick ribbon, like this one:

http://i1212.photobucket.com/albums/cc4 ... _00146.jpg

Excellent, thanks ricardo, I will dig mine out and take a look

The first 1275,s have a transmission case that is matched to the 333 gearbox and normally has an AEG part number stamped on it by the starter motor .

Thanks

Does that mean that only those transmission cases can be used with a 333 casing? Also I have a straight cut box which is not in a 333 casing and I still haven't decided which one to use, so the other part of the question is, can the early transmission case be used on a non-333 casing

Cheers

Mike

The only "real" difference between transfer cases (ie that determine their interoperability) is the idler bearing size. Of course "correctness' is another issue all together.

Cheers, Ian

There is the advantage in the later case with the much improved oil feed to the idler bearing.