How much horsepower would a Raptor 660 be pushing out with a hotrod crank a 11:1 high compression piston a ported & polished head a stage 2 hotcam, a proflow intake, stage 3 jets, High current stator and a Sparky's Racing CDI Box.
Also a ruff estimate on the miles per hour.

 

I'm not a dyno, and you didn't specify if the crank will be stroked or not, who's doing the port work, and what kind of exhaust, but with a stock length crank and all the mods you mentioned, I would guess around 45-50 HP.

Speed depends on gearing and tire size. With stock gearing and stock rear tires and the mods mentioned above, you might get 75-77 mph out of it. Stock top speed is about 73 mph. You will need to change the gearing (sprockets) to get more tp speed out of it.

 

<div class="FTQUOTE"><begin quote>Originally posted by: Politically Incorrect

I'm not a dyno, and you didn't specify if the crank will be stroked or not, who's doing the port work, and what kind of exhaust, but with a stock length crank and all the mods you mentioned, I would guess around 45-50 HP.



Speed depends on gearing and tire size. With stock gearing and stock rear tires and the mods mentioned above, you might get 75-77 mph out of it. Stock top speed is about 73 mph. You will need to change the gearing (sprockets) to get more tp speed out of it.</end quote></div>

 

I have a full yoshimira racing exhaust. According to CT racing just my exhaust and the intake will have me out to 48 horsepower. The CT exhaust on a raptor pushes out 50 horsepower. I have a regular length crank but I have a high compression piston thats supposed to give me some horsepower my head is being ported by one of my freinds. And I have my bike geared up for bottom end for right now I have 10 inch ITP rims on the rear. Im pretty sure Im pushing out more then what you said.

 

if the porting is done right it should be right at 50hp or so