The Mule gets a set of Edelbrock Performer Pontiac aluminum D-Port cylinder heads. HOT ROD Staff Writer Apr 25, 2013. See All 8 Photos. Tech Type. 0:00 / 0:00. See All 8 Photos.

Brother John didn’t let the opportunity go to waste and the result was a pushrod-through-port Pontiac cylinder head design unlike anything ever seen in the GM camp before.

Check out as we get more HP from out 2005 Pontiac GTO Poncho project car; follow along as we install new cylinder heads from Trick Flow Specialties as well as some other parts from Summit Racing ...

Pontiac found that out the hard way with the legendary Ram Air V cylinder head, which was cribbed entirely from Ford’s Tunnel ...

The first Pontiac inline six had an L-head design and 186.5 cubic inches of displacement. By 1932, it had grown to 200.4 cubic inches and could produce 65 horsepower.

A beautiful and tastefully restored 1978 Pontiac Trans Am with the W72 Performance Package and the rare Martinique Blue paint ...

The Pontiac GTO’s 389 cubic-inch V8 saw improvements in the guise of revised cylinder heads, high rise intakes, and a bump to 335 horsepower for the four-barrel equipped mill, and 360 for the ...

Pontiac, perhaps inspired by Ford's Tunnel Port cylinder head design, rearranged the valve layout in the Ram Air V heads, swapping the two inboard cylinders to put the intake valves, not exhaust ...

Installation of the Edelbrock ’11-to-16 6.6L LML Duramax Cylinder Head on the engine of a ’14 GMC Sierra 3500. Truck is run on the dyno before and after to judge performance gains.

Pontiac will add a 2.4-liter EcoTec four-cylinder engine to the 2009 G6 coupe. The engine will be available in the new SE trim level. Offering 164 hp and 156 pounds-feet of torque, the engine will ...

PONTIAC ANNOUNCES THE 2009 G8 GXP. High-Performance Flagship Combines Progressive Design and Powerful Performance. NEW YORK – Today Pontiac announced the flagship of its GXP performance series ...

Horsepower = flow at 28 inches/H2O x 0.257 x number of cylinders. Our RaceKrafters modified 6X cylinder heads flowed 236 cfm at 0.500-inch lift and 250 cfm at 0.600-inch lift.