RHS 11034 Pro Elite BBC 24 Deg. CNC-Ported Bare Aluminum Cylinder Head
396 Chevy Big Block V8, 402 Chevy Big Block V8, 427 Chevy Big Block V8, 454 Chevy Big Block V8
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- 339cc Intake Runners & 121cc Chambers
2.250" + .250" Long Intake Valves & 1.880" + .100" Long Exhaust Valves
Angled Spark Plug Holes
Single Aluminum Head
Pro Elite Big Block Chevy Aluminum Heads
Increased airflow and efficiency are most essential for those drag racing and marine applications looking for the biggest possible gains in horsepower and torque. Cylinder head engineers at RHS have designed a Big Block Chevy 24-degree CNC-ported cylinder head to maximize airflow and assure port-to-port consistency in runner shapes and sizes. These BBC 24-degree aluminum heads feature multi-angle intake and radiused exhaust valve seats for up to 5% more airflow and increased horsepower. The thick deck surface of these precision-machined heads allows them to be angle milled and provides increased rigidity to improve head gasket retention in boosted and nitrous applications. The best features, however, are the CNC-ported intake and exhaust runners for optimal air volume, atomization and velocity. The RHS BBC 24-Degree CNC-Ported Aluminum Cylinder Heads are available with either a 339cc or 376cc runner volume and a 121cc combustion chamber and are designed using the RHS exclusive Clean Cast Technology to deliver superior port-to-chamber transitions for greater airflow. In addition, these heads feature a refined water jacket for more even water flow, which reduces hot spots in both the cylinder heads and the engine.
CNC-ported 339cc intake & 135cc exhaust runners w/ CNC-ported 121cc combustion chambers
24° aluminum cylinder heads designed for use w/ hardcore Big Block Chevy drag & marine racing applications
Multi-angle intake & radiused exhaust valve seats for superior airflow & increased horsepower straight from the factory
Extra-thick deck surface allows angle milling for compression & increased rigidity; improves head gasket retention
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Q & A
Tim talks about the new Edelbrock powder coated cylinder heads and provides a little history on Federal Mogul heads.
Tim shows off our aluminum cylinder heads for 348-409 Chevys.
In part 2, you will read about the Generation 4 small block series of V8s that share the same platform as the Generation 3 discussed in part 1.
Trying to decide which power plant to use in your latest project? Here's a quick guide of modern V8 engines for hot rodders to consider.
Illustration showing the various styles of engine heads you may encounter on the Small Block Chevy engine.
Engine Cylinder Numbers
Tim M. has tried to stay true to the vintage route, but sometimes, exceptions must be made. For example, the original oiling system's paper element and canister are functional, but an upgraded system will be more reliable.