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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | It has been suggested before that they are for setting engine/U joint angle. It was also suggested that because the crossmember may not be perfectly flat under the mount, it may act like a bridge for the uneven surface.
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