Senior Tech Team
Join Date: Nov 2008
Location: Chevelle land USA
Re: Header Fitment Doesn't Look Right
It's a '69.
I'll take measurements when I get home, tonight; however, I don't remember anywhere to make adjustments on the frame towers or engine mounts. The frame towers bolted straight to the frame, with no slots for movement. The engine mounts the same way - no way to adjust.
Friend worked in a frame shop. Chevelle # 1 rear ended another car striking the rear with its driver front. This caused massive damage naturally but not damage that couldn't be repaired supposedly back to factory tolerance specs. It was discovered after straightening that the frontal collision had moved the engine towards and down lower on the passenger side about a 1/4 of an inch via an almost unnoticeable buckled cross member engine frame mount area on one side and raised frame mount on the other of the cross member at the driver side.
Doubt this is your issue but just wanted to offer it up.
71 SS 454 ELCO
Strange 12bolt w/4.10