The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 47-55.1 Rear brake line and exhaust

1project2many · 06-04-2020, 03:56 PM

I also agree that the exhaust is close to the bed wood. The heat generated will depend on a number of factors. Exhaust on the old sixes was generally cooler due to lower compression and richer engine operation. A later EFI equipped engine can run hotter and if you have installed cats the temp can easily top 1000 degrees where the exhaust goes over the axle. I've seen short bus floors, which are made of plywood above a sheet of steel, come in smoking after a run full of kids.

Shields plus more physical distance are definitely good ideas imo.

06-04-2020, 03:56 PM	#20
1project2many Registered User Join Date: Mar 2012 Location: Lakes Region NH Posts: 3,158	Re: Rear brake line and exhaust I also agree that the exhaust is close to the bed wood. The heat generated will depend on a number of factors. Exhaust on the old sixes was generally cooler due to lower compression and richer engine operation. A later EFI equipped engine can run hotter and if you have installed cats the temp can easily top 1000 degrees where the exhaust goes over the axle. I've seen short bus floors, which are made of plywood above a sheet of steel, come in smoking after a run full of kids. Shields plus more physical distance are definitely good ideas imo. Last edited by 1project2many; 06-04-2020 at 04:05 PM.