I had a 350/SM465 in mine for a couple years. It was a vast improvement over the F/3spd. Felt good on and off the road. Quadrajet for the win. Pretty mild build-cam and exhaust. I’d guess 225hp. Really liked it. I d of know what I got for...
Keep in mind that my Cruiser is very heavy compared to a stock Cruiser, which I imagine cuts into the fuel mileage quite a bit. It weighs 5700 lbs empty. That is without a hard top and doors, too. I am also running a 6.2L with 1-ton running gear...