How many times have you asked yourself, “I wonder if I can squeeze a few more horsepower from my enduring, yet horsepower-challenged engine?” To tell you the truth, there are lots of ways, but the ...

Editor's Note: Way back in March of 1998, GMHTP ran "Opti-Spark" by Ray Bohacz, an engineering-level dissection of GM's Opti-Spark distributor. This evolutionary ignition component was a bridge ...

Out of the many different aspects of the Pontiac hobby, ignition-system function is often the most misunderstood. Since it deals with an intangible (i.e., electricity), it's very easy to assume one ...