The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 1972 C20 4-speed Header/Manifold Question

ItWillBeSlow · 02-07-2021, 11:29 AM

I bought the JEGS 2.5 manifolds and mocked them up last night. They look very nice.

Clearance looks tight on that crossmember. Id guess the bottom flange is about 5" off that crossmember and will require a very tight radius at the reducer to bolt onto the flange.

Truck won't go to the exhaust guy for a while. If anyone has similar straight down 2.5" manifolds please share your experience.

02-07-2021, 11:29 AM	#7
ItWillBeSlow Registered User Join Date: May 2013 Location: You're the only 10 I see Posts: 367	Re: 1972 C20 4-speed Header/Manifold Question I bought the JEGS 2.5 manifolds and mocked them up last night. They look very nice. Clearance looks tight on that crossmember. Id guess the bottom flange is about 5" off that crossmember and will require a very tight radius at the reducer to bolt onto the flange. Truck won't go to the exhaust guy for a while. If anyone has similar straight down 2.5" manifolds please share your experience. Attached Images __________________ 1972 C20