Engine What's The Best Rpm For 302?

Discussion in 'Classic Mustang Specific Tech' started by 67rcks, Aug 27, 2012.

  1. :nice: Yes, experimentation is the key. My Fiesta actually is over 3,000 rpm at cruise 75 mph and gets 39 mpg. Seems like a lot of revs, but it works.
  2. The smaller the bore, the faster the burn. You can run higher RPMs with good efficiency and (added bonus) they will handle more compression without detonating. My advice above was for the 4.00" bore of the motor in question.
  3. I think your post was clear. I disagree with your statement though. I think that there are too many variables to say that XX RPM is the way to go for X size bore to optimize fuel economy. Brake specific fuel consumption is not that simple.
  4. Well, good, no misunderstanding. I was referencing the work done by others in other publications, not my own opinion or research. I should have made that clear. I don't have a dog in this fight (so to speak), just trying to provide some guidance to the original poster.