TorqueHead vs Opti

[KRatcliff]

Originally Posted by Doug Hoven

Interestingly enough, in GM F-body shop manuals, they actuall refer to the optispark unit as the "disributor ignition system."(see attatched) I don't believe one could quite classify it as a "crank trigger" looking at the way it works. Correct me if I'm wrong(being that I am primarily a FFFord guy), behind the cap there is a rotor that uses slots on a gear with an optical sensor to determine when a spark should be administered. This sounds to me to be more similar to a "hall effect" type distributor used in 80s fords and chryslers rather than a traditional "crank trigger." IMHO the rule should be written to include all fuel injected stockers in determining if crank triggers are allowed in stock or not.

The Optispark is considered a front mounted distributor, but a stock LT1 from GM comes with both a crank sensor and a cam sensor. Thus my comment when I quoted the rule book that an LT1 should be allowed to run a crank trigger since it comes with one from the factory.

The rule book is a bit out dated, but how can you not allow a car in the guide to run the same equipment as it came from the factory? Would tech bounce a purely stock LT1 because it has a crank sensor?