Although good for its day, the original Edelbrock Performer intake--as tested in the January 1982 issue of PHR--still appeared to be based on design philosophies of the mid 1950s. The thinking of the ...

Since the aftermarket began churning out parts for our beloved Fox body, horsepower claims have abounded, and their validity often ends in mixed results. Edelbrock has been around for 65 years now and ...

There's no mistaking that Pontiac's cast-iron four-barrel is a solid performer. When it comes to cast-iron Pontiac cylinder heads, the Round-Ports are the fancy of every performance enthusiast, but ...

When introduced for the '05 model year, the C6 received the evolutionary Gen IV LS2 powerplant, which carried ratings of 400 horsepower and 400 lb-ft of torque. While the new engine's cylinder heads ...