Header Help - 69 Chevelle L78

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**sixt9rsx33** · #1 08-08-2018, 12:31 PM

I am using 1.835" inch tubes. Engine builder suggests this size. What size are you guys using?

novadude · #2 08-08-2018, 01:50 PM

Hedman 1-3/4" headers fit very well, and the smaller tubes will actually perform better on an L78 (or even a street 454).

Flying Undertaker · #3 08-08-2018, 04:47 PM

Hooker super comp #2217-1 for hooker ceramic coated headers, #2217 with black paint & you have them coated. 2" primaries 35" long with 3 1/2" 10" long collectors and they fit with PB,PS,AC, both stick and auto trans. 2" primaries recommended by Chevrolet Power Manual and How to Hotrod Big Block Chevy books. Don.