That's easy. 25 HP! (Just kidding.)
The 350 hp engine was the same as the 325 hp, only a little "hotter" cam. The 375 hp had 780 Holley, square port aliminum intake, square port iron or alum. heads, bigger valves, solid lifters and cam, (with big pushrods and long-slot rocker arms),11.25:1 forged pistons, "dimple" rods, 4 bolt mains,was only available in non A/C cars, and sounded a whole lot "meaner" than the two previous ones.
[This message has been edited by Peace69Z/28 (edited 03-17-2000).]