Gary534, I just wanted to add some info on those great engines. The compression ratio is usually 7.5:1. Pretty low. They were designed for more torque than hp. If you have the block decked to bring them up to 8.5 or 8.75:1 they will perform and still have a bunch or torque. I would keep it below 9:1 as they were mainly a pulling motor and tougher than nails. 500k miles is not unusual for them with todays oil. Could last even longer. Also I would machine the intake to take a square bore 500 cfm carb. They could use a 600 cfm but the smaller one would be more efficient with a spacer plate up to 2 inches. With some headwork and balancing it would be an awesome set up, gobs of power, and with tall gears not too bad on fuel, otherwise 10-14 mpg is all you would get. The bigger ones, well not too much for mileage but will pull almost anything including a semi down the road on a hook truck. My brother got 17 hwy with tall gears and a three speed manual on his 305 V6. The 351 would be more thirsty but no more than a 350 V8 if set up right. Just a few thoughts and suggestions. H.
