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Getout

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Posts: 13
Reply with quote  #1 
Can anyone tell me how the gearbox/lower unit differs, between a 2007 XL shaft 175hp and a 2007 XL shaft 200hp?
Is it just the length and shape of the shift shaft and the length of the driveshaft that is different?
If so, can I convert one to the other ie. fit the shift shaft and drive shaft to a 200 lower unit and match it to a 175 powerhead?? (both 2007 models and assuming the gears are shimmed correctly)
Huey

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Posts: 13,838
Reply with quote  #2 
If you are talking the 60-degree small block 200HP no difference at all. If you are talking the 3.3L 90-degree big block 200HO then upper driveshaft and shiftshaft are different to a 175HP. The devil is in the details.
Getout

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Posts: 13
Reply with quote  #3 
Thanks Huey, both are 60 degree small block, but the shift shaft on the 200 has a kink in it and the driveshaft seems to be about 15mm longer.
Getout

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Posts: 13
Reply with quote  #4 
Just checked...my mistake, the donor was a 200 HO. Can I make it work with a shift shaft and upper drive shaft swap?
Huey

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Posts: 13,838
Reply with quote  #5 
Yes it would work, whether you can make it work with the upper d/shaft swap that is upto your skill level due to needing to remove both upper and lower and swap.
Getout

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Posts: 13
Reply with quote  #6 
Thanks for your help Huey, I am fine with the dismantling. I replaced all the seals before I realized the upper driveshaft was too long. I may need professional help with shimming tho.
Huey

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Posts: 13,838
Reply with quote  #7 
No problem. There will be no need to re shim just swapping upper shafts. Make sure you fit a new pinion nut and driveshaft retainer. It is not that hard if you have some mechanical skills and the genuine service manual.
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