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How to tell difference between big shaft #4's and small shaft???

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How to tell difference between big shaft #4's and small shaft???

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Old 06-22-2009 | 08:09 AM
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Default How to tell difference between big shaft #4's and small shaft???

anybody???????
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Old 06-22-2009 | 08:29 AM
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also what hp are they rated for????
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Old 06-22-2009 | 08:36 AM
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They are all rated @750 HP but can take allot more !!!

The diffrents,,,a big shaft has a big propshaft and a small shaft has 1 thats tappered down behind the seal like the #3 !!!
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Old 06-22-2009 | 08:39 AM
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no sh$t, i know the big shaft has a bigger shaft but what are the dimensions????? Im going to look at a boat today with 4's and want to be able to look at them and know if he is bs'ing me..........
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Old 06-22-2009 | 08:45 AM
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Originally Posted by 302Sport
no sh$t, i know the big shaft has a bigger shaft but what are the dimensions????? Im going to look at a boat today with 4's and want to be able to look at them and know if he is bs'ing me..........
Bro,,,,if the prop shaft is 26 spline ...like a #6 and straight out the back ,,,,NOT tappered down.........its a big shaft !!!


LOOK here. ( SMALL SHAFT ) 19 spline,,,u can see right behind the seal where its tappered down. On the big shaft it comes straight out all the way to the tread.
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Old 06-22-2009 | 09:43 AM
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Originally Posted by 302Sport
no sh$t, i know the big shaft has a bigger shaft but what are the dimensions????? Im going to look at a boat today with 4's and want to be able to look at them and know if he is bs'ing me..........

He gave you the correct answer.
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