Swiss Cheese frame

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Nov 11, 2011 | 06:24 PM

kevin316

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Joined: Feb 2011

Posts: 633

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From: Grande Prairie, Alberta

Swiss Cheese frame

Does anyone know why there are so any extra holes in the frame?

I know it may be for stuff my truck doesn't have or they may use the same frame in different vehicles but wow! I can't imagine what would go where some of the holes are. some are probably for alignment on the jigs when they were built.

Nov 11, 2011 | 06:48 PM

4x4 Bart

Fleet Mechanic

Joined: Feb 2007

Posts: 1,326

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From: Middle TN

Some holes were for different equipment options and several holes front and back were for transportation tie downs.

Nov 11, 2011 | 08:46 PM

4x484150

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Joined: Apr 2011

Posts: 917

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From: South Carolina

There were the "swiss cheese" frames 80-81.5 but i'm not sure if Ford had started it in the 70's or not. For the later frames, it was for fuel ecomomy.

Nov 11, 2011 | 09:05 PM

HIO Silver

Fleet Owner

Joined: Dec 2009

Posts: 20,678

Likes: 82

From: NorCal

3x... jigs, tie-downs, lifting points during production, equipment variants(fuel tanks, emissions), pulling points (for when the get wrecked), pass-throughs for tubing, holes clips and ties.

If ya really wanna see Swiss-cheese, google "swiss cheese pontiac".