Shipping Engine Blocks Freight Class Guide
Engine Blocks typically classify around Class 50, in the 50-65 lb/ft³ density range. Crated engine blocks and long blocks.
Calculate Engine Blocks Freight Class
Enter your actual shipment dimensions and weight below. Typical engine blocks run 300-500 each lb, but your exact class depends on your specific shipment's measured density.
Measure the full footprint including packaging, and include pallet weight in your total. Carriers will re-measure at the terminal.
Shipping Engine Blocks the Right Way
Crating Protects Both the Part and the Class
A solid wooden crate keeps an engine block from shifting and protects mounting surfaces and machined faces from damage, and it also gives an accurate, consistent footprint for measuring freight class rather than relying on the bare block's irregular shape.
Small Crates Can Hide a Lot of Weight
Engine blocks pack enormous weight into a compact crate, so it is easy to underestimate a shipment's true weight from its footprint alone, and shippers should always confirm actual scale weight rather than estimating from crate dimensions.
Weight Distribution Drives Load Planning
Because engine blocks are so dense, a load of crated blocks can hit legal axle weight limits while using only a small portion of the trailer's floor space, so dispatch has to plan around weight distribution across axles more than cubic capacity.
Engine Blocks: What Carriers and Shippers Look For
Engine blocks are about as dense as commodity freight gets on this site, which puts them in the cheapest classes on the chart, but that low class is almost beside the point since weight, not cubic space, drives everything about how these loads get planned. A handful of crated engine blocks can push a truck toward its legal weight limit while barely touching the trailer's available floor space, so dispatch and handling both revolve around weight distribution rather than classification.
Why Engine Blocks Classify Around Class 50
Crated engine blocks and long blocks typically run 50 to 65 pounds per cubic foot, which lands most shipments in Class 50, the lowest and least expensive class on the standard density table. That density reflects solid cast metal packed into a relatively tight crate with very little wasted internal space. Low freight class here does not mean cheap freight overall, since engine block shipments are often priced and planned around weight limits rather than the classified rate itself.
Crating and Handling Tips
A properly built wooden crate with the block secured to a base skid prevents shifting during transit and protects machined surfaces, mounting points, and any attached components from impact damage. Reused or undersized crating is a common source of both damage claims and inaccurate freight class measurements, since a loose or improperly sized crate distorts the shipment's true footprint.
Forklift access points should be clearly built into the crate or skid design, since engine blocks are too heavy to handle safely without mechanical equipment at every touch point from pickup through final delivery. Shippers who move engine blocks regularly typically standardize crate and skid dimensions to keep handling consistent across every shipment.
Equipment and Handling Notes
Dry van is standard for engine block freight, and no temperature control is needed. Because the freight is so dense and heavy for its size, drivers should pay close attention to axle weight distribution when loading multiple crates, and loads should be positioned and blocked so weight is spread evenly rather than concentrated toward one end of the trailer.
Common Shipping Mistakes
The most common mistake is underestimating total shipment weight from a compact crate's footprint, which can lead to a truck being loaded past its legal weight limit before the trailer looks anywhere near full. The second is inadequate securement inside the crate itself, which allows the block to shift during transit and damage both the crate and the machined surfaces it was built to protect.
Related Automotive
Carriers Hauling Engine Blocks
“Engine block loads are deceiving. The trailer looks half empty but I'm already close to my weight limit, so I plan those runs completely differently.”
“I always double check the crate securement before I pull out. A shifted engine block inside a crate can do a lot of damage over a long haul.”