Visit The Dirt Forum for More Information

Author Topic:   Can a solid compete with a roller?
ratracer10
Member
posted July 30, 2003 02:57 PM
there's nothing like the big 'ol flat torque curve of a good roller cam. if you're "runnin' with 'em" with your flat tappet cam, you'd be "runnin' away from 'em" with a properly set up roller cam.


nut3d
Member
posted July 30, 2003 06:00 PM
I run a Hyd. cam and can compete with solid and roller cams.


rico 08
Member
posted July 30, 2003 08:56 PM
I read somewhere that a solid takes around 14 horsepower more to turn than a roller.But the big horsepower gain is in the faster ramps and increased flow over a similar solid.


Ryan Lingner
Member
posted July 30, 2003 09:15 PM
HP numbers are just that numbers. What you can stick to the ground is what matters. If you feel like your close to your limit on traction now you might go slower with more power.


sdhnc29
Member
posted July 30, 2003 09:22 PM
rico 08 is correct . You can compare a flat tappet and a roller that have the same duration at .050" . But this is where the comparison stops . As you go on up the ramp , .100" , .200" etc. , the roller will have the valve open sooner . The roller will produce more HP and torque in every scenario .

As for which one to use in your late model , I'd go with the roller . You might invest a little more money in one to start with , but one win should take care of that . Not to mention that if you use a flat tappet cam that would come close to competing with a roller engine , you will be using a very aggressive profile that will most likely need replacing every season . Possibly even sooner .

Steve

------------------
Hendren Racing Engines
Rutherfordton , NC
(828)286-0780


Back to the Archives