Which cylinder heads have a “Compact Wedge” combustion chamber?
Compact Wedge is a chamber which has had considerable race development to improve burn rate and efficiency (power for a given amount of fuel & air intake). This includes “cutting edge” Winston Cup, Formula 1, and NHRA Pro Stock type of engines. The “chamber” is actually a combination of the chamber in the head and the piston dome design, and how closely they come together in the quench zone. Most any combination that simply takes “this head” and puts it with “that piston”, without careful dyno study, would NOT be considered a “compact wedge”.
