the 1985 beast like mine had no powervalve
just huge ports
![Cool 8)](https://forum.ozvmx.com/Smileys/default/cool.gif)
1986 to 1988 had the 2 drum side powervalves
1989 onwards had the kips 3 powervalves 2 side drums and a top port flapper
main thing with the 3 valve motor is to set it up correctly
they all pull about 63 horsepower standard
the 85 is just more brutal (feels like 100)
generally you are just a passenger ha
![Grin ;D](https://forum.ozvmx.com/Smileys/default/grin.gif)
good power pulls from zero to top end with no real hit in midrange like a cr500
![Shocked :o](https://forum.ozvmx.com/Smileys/default/shocked.gif)