Sounds like a 235...
Best thing to do is find the casting number on the block. It should be on the side below the distributor. Take that to the Inliners Casting Number page linked in another thread here in the Engine Bay.
CTRL-F is your friend for that one. (find on page)
That page will tell you what size, what year and maybe a few other things about your engine (or at least the block).
Current fleet (subject to change w/o notice) \'49 GMC 3/4-Ton , 60 Austin Healey Frog-eye Sprite (some assembly required), 2011 Dodge Avenger, 2015 Jeep Cherokee. No, they don't all run. My other ride is a (B737)no, (B767)no, A320.... Update... was Embraer E190, now Boeing B787. Knowledge is a wonderful thing, but ignorance means you don't know you can't do something.
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