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**doug_p** · 08-03-2018, 01:22 PM

Hey 67chevySupercharged, what kind of mods were required on the headers with the 4l80? I read somewhere with the 4l80, the Doug Thorley headers needed some grinding?
Thanks-
Doug

08-03-2018, 01:22 PM	#689
doug_p Junior Member Join Date: Sep 2014 Location: Yorktown, VA Posts: 88	Re: LS swappers, post up your pics!! Hey 67chevySupercharged, what kind of mods were required on the headers with the 4l80? I read somewhere with the 4l80, the Doug Thorley headers needed some grinding? Thanks- Doug