GMC CK Pickup 7.4L With Chevy Big Block 1978, BB-3 Xtra™ Series Aluminum Cylinder Heads by Brodix®. The BRODIX BB-3 XTRA has taken the conventional big block to the next level. These cylinder heads feature a valve angle that is rolled two degrees. The -3 XTRA is available in a rectangular-shaped or oval-shaped intake port configuration, and both are offered in an out-of-the box version or completely CNC ported. The out-of-the-box version is available in two port volumes, 345 cc or 363 cc, both with CNC ported 119 cc combustion chambers, CNC bowls blended and ports matched, and flow over 390 cfm.
Fitment notes: Not legal for sale or use on pollution controlled motor vehicles.
- High-velocity intake ports
- * New fuel-efficient chambers
- * Extra-thick deck
- * High valve cover rail
The BB-3 XTRA CNC ported version is available in two port volumes, 366 cc and 380 cc. The 380 cc version flows over 440 cfm. The BB-3 XTRA CNC ported oval ports are available in three port volumes: 332 cc, 351 cc, and 365 cc. This wide range of port volumes allows the oval port to compliment virtually any engine combination available. Port shape, port velocity, and the latest technology have propelled these cylinder heads to the top of their class.
Brodix® is a well-reputed brand in the automotive industry that takes pride in offering the highest-quality and the most innovative aftermarket parts. Everything from cylinder heads, aluminum and cast iron blocks to manifolds, and many other automotive parts, Brodix has you covered with what you need to make your vehicle perform at its peak. Brodix originated from a jobbing foundry, which produced all types of high-quality aluminum castings. The business officially known as “Brodix” has operated since 1979 and enjoyed many successes over the years in every form of auto racing. Many records, championships, and titles have been won with Brodix products. Now it’s your turn to rule the track with Brodix performance parts!