Has anyone bought one of the CDI boxes off Ebay. Just wondering if they work, and if it's worth the money for a thousand more RPM's

 

Talked to one of the techs, it advances the timing (reason for some of the hard starting when cold)
and moves the rev limiter to 10500. Since a stock Predator makes peak power well below the factory rpm limit, power increase will be minimal. It will cure the popping in between speed shifts, and be forgiving in a drag race. It is probly worth the money if you plan on other mods. Don't expect anything major with any CDI.

 

i Bought my from rath racing and i did not see a big difference

 

hom much is the big block? Is it compatable w/ their 580 big bore?

 

Same kit basically, just a billet sleeve and some major work on the piston. Reshape and remove all material possible. Then alot of work to the bottom end.