I have pallet racks in back of garage too, great space saving storage for heavy engines and transmissions and most anything else.
Having a forklift makes pallet racks much better than without.

If/when I get more garage space it’ll include a 40’ long, and quite tall, wall with pallet rack shelving.

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-