# RPM's **URL:** \ **Category:** SON240sx Automotive\ **Created:** [December 25, 2007, 6:43am UTC](https://forums.speedlife.net/t/rpms/112032 "2007-12-25T06:43:35Z")\ **Posts on this page:** 1\ **Showing post:** 17
**Author:** ![roast](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/roast/32/5498_2.png) [@roast](https://forums.speedlife.net/u/roast)\ **Post date:** [December 26, 2007, 9:03am UTC](https://forums.speedlife.net/t/rpms/112032/17 "2007-12-26T09:03:40Z")
> [@FS: A Bunch of Stuff CHEAP, LOOK](https://forums.speedlife.net/t/fs-a-bunch-of-stuff-cheap-look/15124/15): > > On the KA motor, torque and horsepower drop after 5500rpms. Revving higher is for gay vtac motors which have no power from 1 through 5k rpm. If you want to rev high, you will need better cams. The down fall is the motor will lose some torque, but you will gain a few HP up top. You should probably just turbo the motor and not worry about 6.5k beyond, it will be a killer motor at the strip or the track. Variable valve timing will help with a better torque range throughout the powerband. Nissan SR motors did come with VCT so I fail to see why bashing vtec is helpful to any opinion. I do see vct to be similar to vtec since they both change the cam profile at different RPM. --- _[View the full topic](https://forums.speedlife.net/t/rpms/112032)._