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Re: wd or wd45
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Brian G. NY
The last "tractor" serial number of the WD-45 in 1957 was WD236958. Unless, someone went to a whole lot of trouble to stamp a "bogus" number on the rearend, it cannot be as you say.
That "Engine" number is definitely 1949 vintage and an original block with that number would have been the 201 version with the side plate. When all the 201 blocks were used up, all replacement blocks were the new design without the side plate.
Replacement blocks came to the dealer with no serial number stamped on them and the dealer was supposed to stamp the number from the replaced engine. I happen to own a WD-45 with a block with no serial number.I would guess that a WD block was replaced with the newer WD-45 style block at some point. However, if you are sure it has a 4-1/2" stroke, then apparently a WD-45 crank was installed when the other work was being done. A lot of things could have happened over the years and many parts wound up being swapped around to keep these old tractors going.
If, your engine has the 4-1/2" crank and IF it has the correct WD-45 pistons and IF it is in reasonably good condition and tune, you should Dyno well over 35 HP.
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