BBC LS5 454 exhaust install questions.
Corvette Central dual exhaust deluxe kit seems to come with "extra" parts.
My factory assembly manual shows a few exhaust diagrams (with some good clearance measurements), but the pic lumps all engines together.
I would think BBC/454 and SBC/LT1 would have different exhaust pipes...
Page A2 UPC 8 titled "Exhaust System" shows a "close up" of pipes.
It goes exhaust manifold, then (9) packing, then extension (8)- extension? this confuses me.
Why do I need a metal-small-donut-exhaust tube extension (about 2") that goes into the real header pipe?
The flange should pull up the header pipe and sandwich the packing right against the manifold, right?
But then again, why would they send these parts if i didn't need them?
Should I omit the tube extension pieces? They seemingly would choke the exhaust before actually going into the real exhaust pipes.