<span style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;">It depends on what you are comparing. For example and old v8 to a new v6 which ones better maybe the v6 because it may have more power because its newer and better technology and may have better results. It also depends on the manufacture like a Toyota v8 may not be as good as a v6 from BMW. </span><br style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;"><br style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;"><span style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;">V6: A V6 engine is a V engine with six cylinders mounted on the crankcase in two banks of three cylinders</span><br style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;"><br style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;"><span style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;">V8: A V8 engine is a V engine with eight cylinders mounted on the crankcase in two banks of four cylinders</span><br style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;"><br style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;"><span style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;">For example if you had a company like Ferrari with a v6 and v8 ( even though Ferrari's i think don't make any v6's currently. Just using them as an example) </span><br style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;"><br style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;"><span style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;">The new v6 compared to the v8 would have not as much power regarding horsepower, torque, and top speeds, because there is 2 extra cylinders pumping out air ( power) through the engine. Also With a Ferrari the v8 would have a better sound to it, like when you accelerate you would hear the noise from the engine as to the v6 not as much.</span><br style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;"><br style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;"><span style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;">But if you compare an old v8 Ferrari engine to a new v6 Ferrari engine ( as i said before just as an example) the v6 might have the same or even better performance then the 10 year plus v8 engine. </span><br style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;"><br style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;"><span style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;">For example: 1999 Ferrari with v8 395 horsepower and a 2011 Ferrari v6 with 400+ horsepower.</span><br style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;"><br style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;"><span style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;">also the v8 might not get as better fuel consumption as the v6 as it uses more fuel for the extra 2 cylinders.</span><br style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;"><span style="color: #333333; font-family: arial, helvetica, clean, sans-serif; line-height: 16px;">I think you get the point.</span>