Originally Posted by roblupo

The mephesto is a good engine but its not going to knock your socks off with power. Its a four port engine with a small crank compared to say a Mito 4. For that reason it is smoother on the bottom and on looser tracks it will be a good choice. The stock pipe suggested for it helps the engine get up to speed and with the DLC coated crank gives it high revs for longer straights with goo gas mileage. Only issue is its softer on the bottom but with some testing and some diff headers for diff conditions it can be good. I ran it with a 41031 header and the 2135 pipe but does not have that great of gas mileage. Also don't be afraid to run it with a 7-7.5 venturi to open it up.

For the price I like the Mito line of engines and the Rolling. Far better choices with power without having to have a lot of extras to make it go fast out the box.