what would be the best engine for a dirt oval track? i have a os .12 cv-r but i want something with more power and faster, what do you guys reccomend.

os 18 cvrx

What are your track rules if any? If you want a whole lot of driver train breaking power OS 18 TZ. Has as much HP as some big blocks. [X(]

i need a direct bolt on engine and also how hard would the tz be on the diffrential and spur gears