[Rtharp1234]

So goal's already been achieved... new goal =25mpg

So the big change that made it possible was regearing the rear differential.
I was still with the original 2.75 rear end ratio.

I had somebody who mentioned to me in another group that this ratio was killing me. I'd say about 90% of the info out there just says that lower #'s equal better gas mileage. This poster had mentioned to me , nope it's making your engine lug.. It has to really work to get to your RPM and it's way below where your engine's rpm efficiency curve.

Well he is right. I had spent $1000 getting my rear end differential. The best bang for your buck upgrade and they aren't kidding. It will pay for itself though in gas mileage saving in only a few months.

I've got an approx 27% increase in torque with this new rearend. It's a definite jump in power. But I've also got a huge jump in gas mileage as my previous best was 14mpg and now I'm getting almost 22.. (and this is two fillups so not a fluke)

So I've got a 500hp 69 Cougar that's been lightened a bit, has an AOD, new rear end and Sniper now getting much closer to modern day fast cars.

now to lighten it a bit more. and more tuning the EFI Sniper.