Comparison 340 / 289

I had a 70 Mustang Mach 1 with a 351 Cleveland and as others have said it was fairly quick. Stock it was real good competition for a stock 340 Dart. My brother had a Mustang with a 289 and when stock it was a pig but with a decent solid cam and 4.11 gear it was really good for a hole shot but still not much once you got going. The Boss 302 engines are super high winding solid cam engines with a big set of Cleveland-like heads and again really good for hole shots and road tracks but not that much in the 1320.