The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 73-87 5.3 exhaust manifold question

kipps · 02-23-2020, 10:35 AM

Everything I've seen says that the frame can be notched a little to clear the factory manifolds. I'm sure it depends on the engine mounts, and the resulting engine position.

That said, I'd just swap with 2006 trailblazer or 2010 camaro manifolds. As long as they are still equipped with the heat shields, they look very close to stock. The only way someone will know they were changed, would be by checking part numbers. I seriously doubt that happens.

02-23-2020, 10:35 AM	#2
kipps Registered User Join Date: Jul 2014 Location: North-central Virginia Posts: 1,104	Re: 73-87 5.3 exhaust manifold question Everything I've seen says that the frame can be notched a little to clear the factory manifolds. I'm sure it depends on the engine mounts, and the resulting engine position. That said, I'd just swap with 2006 trailblazer or 2010 camaro manifolds. As long as they are still equipped with the heat shields, they look very close to stock. The only way someone will know they were changed, would be by checking part numbers. I seriously doubt that happens. __________________ 1987 C6P V20 truck, 2010 LMG 5.3, AFM delete, 2010 Camaro exhaust manifolds, 1997 nv4500, 1991 np241c, hydroboost, 2005 14bff axle & driveshaft, drop-n-lock gooseneck, 4.10 gears, stock suspension, rims, and tires. Still a work in progress. Any questions or suggestions are welcome!