Thread: S/O or ?
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Old 10-31-2011, 01:31 AM
PDUB PDUB is offline
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Cobra Make, Engine: Unique Motorcars 289 USRRC, 1964 289 stroked to 331, toploader
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Quote:
Originally Posted by hkmp5 View Post
Owners says top oiler.

Could it be a crossbreed (S/O block casting finished as T/O?)
Is it worth $4K?
Thanks,Mike


As I said in post #2, this is exactly what it is... a S/O casting finished as a top/center-oiler... commonplace in Ford's lineup. Years ago, I had one of these that was from an irrigation pumping system. Many of these engines weren't finished with cross-bolts, but they were added later, which could explain the newer looking spacers in the cross-bolts. Ford sold them as industrial/marine engines.


Definitely buy the new block at that price... this one's not worth it in my opinion.



Quote:
Originally Posted by RICK LAKE View Post
The other thought is that this motor can be converted over to a side oiling with a good machinist. All you need is to have the bottom side oil channel drilled out.

This may not be possible with the way the motor mount bosses were flycut and drilled into the side-oiler passage along the right side of the block... though, from the photo, this one doesn't look as bad as the one I had.
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Unique Motorcars 289 USRRC
1964 289 5-bolt block
Toploader and 3.31 rear

Last edited by PDUB; 10-31-2011 at 01:39 AM..
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