How Long Does LEGO® Young T. rex Transport Truck (77978) Take to Build?
A typical builder finishes LEGO® Young T. rex Transport Truck (set 77978, 115 pieces) in about 20 minutes. Taking it slowly runs closer to 25 minutes; building at a fast pace, about 15 minutes.
PieceTick estimates build time from piece count, part complexity, the set’s age rating, your experience level, and how you sort pieces. Adjust those on this page for an estimate matched to how you build.