[redmt]

Where this is headed is that I have an 8 stack that needs converting to efi. I have a 406 and a 428 that both will need to be rebuilt. One of them will be built in a reasonable stock configuration. I'm shooting for 400-450 HP. I want it to be drivable on pump gas and even poor pump gas when necessary. I've been running a 9.5 comp 428 in a pick up for years and 87 octane without any issues. I've knocked the timing back and flattened the advance curve some.

I'd like to run the 8 stack because of the "cool factor". I don't want to kill the mileage so bad that it becomes un-affordable to drive.