904 low gear measurements

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turboking15

turboking15

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I have searched and nobody seems to have a good way of telling which gear set is in an existing transmission.

I bought a used 904 that someone has been into so the casing numbers dont do me any good. I have the trans apart on the table and want to know if anybody has measurement or side by side pictures to be able to identify which gear set i have.

Thanks
 
If the sun gear is the same size on both sides, it's a standard 904 first gear ratio. If the sun gear is different sizes on each side, it's a low first gear transmission. I don't remember the ratios off hand.
 
Thanks guys looks like ive got a 5 clutch low gear set 904 trans, not a bad for a 100$ trans.
 
Be careful with that factory 5 clutch nonsense, it's a slippery slope, got me good.

Many different variations, air check thoroughly before re-assembly.
 
The sun shell is not curved or round but has a sort step on the low gear 904 which also usually has all the better beefier planet arise as well.

Duane
 
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