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63corvette · 01-21-2011, 11:28 AM

I think you are looking at the drive shaft loop not the tunnel.
The loop can be mild steel at .120 or chrome molly at a lesser thickness that should also be quoted in the specs. The location is also dictated by the rule book.
The tunnel spec should be the same as the firewall spec.
Hope this helps.
Rick Cates

01-21-2011, 11:28 AM	#1
63corvette Senior Member Join Date: Mar 2007 Location: Canyon, Tx Posts: 553 Likes: 128 Liked 361 Times in 104 Posts	Re: Drive Shaft Tunnel Construction I think you are looking at the drive shaft loop not the tunnel. The loop can be mild steel at .120 or chrome molly at a lesser thickness that should also be quoted in the specs. The location is also dictated by the rule book. The tunnel spec should be the same as the firewall spec. Hope this helps. Rick Cates