SBC Stahl Header Adapter

The DYNATECH SBC Stahl Header Adapter (Part No. 796-00100) is a precision aluminum flange adapter engineered to bridge Small Block Chevy exhaust manifolds to Stahl header patterns. This 0.625-inch thick adapter features a 1.125-inch square port design and is supplied as a complete left and right side kit, eliminating the need for separate purchases when converting between these incompatible bolt patterns.

The adapter's aluminum construction provides weight savings critical in performance applications while maintaining structural integrity under thermal and pressure cycling. The precisely machined 0.625-inch thickness ensures proper gasket sealing and alignment without requiring shims or modifications to mounting surfaces. Port sizing remains consistent with OEM specifications, preserving exhaust flow dynamics and minimizing backpressure penalty. Both flanges are finished and ready for installation with factory gaskets.

This adapter is essential for engine builders and restorers working with Small Block Chevy powerplants who need to adapt modern Stahl header designs or older cast-iron manifolds to newer Stahl-pattern exhaust systems. It addresses a specific compatibility gap in the performance automotive market where OEM flanges don't align, eliminating costly fabrication work or component replacement. The kit format—providing both sides—ensures symmetrical installation and balanced exhaust scavenging across all cylinders.

Weighing 3.7 pounds and measuring 24 inches in length by 6 inches wide by 1.5 inches tall, the adapter fits standard workbench space and integrates seamlessly into complete exhaust assemblies. DYNATECH's reputation in the performance exhaust industry supports the precision machining and material selection evident in this product, making it a reliable choice for serious engine work.