The springs that are used for a STREET mechanical rolller are not the same as whats used on a race roller.
Your street rolller will not have .710" lift.
It will be .630" or less. (1.5 rocker) Keep the heads and get and add the right springs to suite the roller cam.
Get a complete street roller cam and kit and install it.
EG: Comp #K12-771-8
Mechanical street rollers use more spring pressure than a hyd roller but a bit less pressure than typical
competition race roller cam.
Typically 160 to 250 seat 400 to 550 open on street rollers.
Follow the cam makers recomendation for that specific cam.
The street roller cams made on the cast cam core tend to go easier on the spring pressure. (low cost)
The street roller cams made on the billet steel cam core can use more pressure. (higher cost stronger core)
Why pay someone to screw it up when you can do it yourself, correctly in a short time.
It is not hard and needs to be done correctly. Most, even so called pro mechanics don't do it right.
But you can.
Note* Doing the job correctly does not equal Hard to do.
Last edited by F-BIRD'88; 10-07-2012 at 12:13 PM.