Today, dollar for dollar, is the 318 faster than the 340 ???

70 Buster 340 said
Anyone still have the 14 second or better 318 timeslips.

Guess my stock 340 15.0 and 14.6 cars were slow compared to those stock 318s.

In 76 I had a 66 318 (4dr) Dart, bought from a little old lady, $300 ... put a fresh tune and fluids ... ran great, after the trans fluid change even occasionally chipped second with those little wheels.
Never took it to the track to race but ... did race it to the grocery store. My guess mid 17s
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66 would have been a 273, and 17's would be a fair guess. And my 318 I currently have in my '74 duster would beat your '73 340. That's not a knock on your 340. I did put 498 bucks into the 318 2bbl. I have since pulled the 4bbl off and added 2 4bbls.. lol. Now it's a 750 dollar 318.... Most have seen it, but in case you haven't...