Thanks to Borla for supplying the stainless materials for the complete exhaust system including XR-1 and collector mufflers.
Exhaust flanges were designed and made using computer software. The drawings were then transfered to a laser cutting machine where the parts were precisely cut out of 3/8 inch stainless plate.
The physical size of the 632 and the factory parameters of the Camaro's compartment presented a challenge on building a set of headers.
The Borla Collector Mufflers were located and temporarily welded in place to prevent movement.
Two primaries were routed on each side to the muffler to locate the muffler for position when the engine and mufflers are removed for finishing. The remaining primaries were started and routed in the approximate direction clearing all steering and frame obstacles.
The engine was removed and placed back on the stand for completion of the primaries. Once the primaries were tack welded in place the engine was placed back in the compartment for checking and adjustments were made.
After the obstacles were cleared, the routing was completed in reverse from the collector muffler.
All TIG welding was done using 308 welding rod on the 304 stainless tubing.
This header job was very tedious and time consuming and required a lot of patience.
The collectors were fastened using bolt-thru tabs for easy installation and removal of the headers.