Originally Posted by
DaveReidUK
The CV-300 was a marketing designation (ie not on the Type Certificate) used to differentiate Convair 240s that were fitted (or retrofitted) with the Double Wasp CB16/17 with a resulting 7-inch longer engine nacelle.
What I get for reading too fast, I thought you said CV-340. So we created a -300 when we changed the engines. Interesting. For the record we put CB-3s on most of our planes. With the windshield AD high blower wasn't needed and I've had the clutch on a -16 give out. No brown or purple gas available in the mid and late 80s so the CB-4 and -17 were overkill