check out what your torque spec really is, usually not too far off of your cubic inch size i.e. 300 incher=300 ft. lbs ('cept when turbo'd) dont matter much if they are inline or side by side, and rarely will a six have more than the v-8 at ANY rpm range ('cept maybe down at 1000 rpm or so) I'm pretty sure there were 350 v8s in some 4000 lb Impalas, that stood up for 100,000 miles.
