Are 3speed flywheels and 4speed flywheels the same?

[jc]

Need a little help finding the correct flywheel for my
67 c10 250 with 3 speed on the column.
I found this part number 04398 ATP brand but its says for
A four speed manual. Mine is a 3 speed manual.

Thanks John
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[Rob H.]

Should be the same, I just swapped the 3 speed in my 72 for a 4 speed out of my 70 burb parts truck. The 72 has a 307 the 70 had a 402 originally, Flywheel looked to be the same. I bolted the 12 inch clutch from the burb straight to the flywheel on the 307. Good luck with it, I had to make the rear driveshaft section to get the right length. 3 speed has a slip yoke, 4 speed has a fixed yoke.