|Date of first acceptance||mid-1944||Total acceptances||8,348|
|Two .50cal M2HB MG||Fixed mounts at front of cargo area|
|Two .30cal M1919A4 MGs||Pivot mount on each side of cargo area|
|Engine||Continental W-670-9A; 7 cylinder, 4 cycle, static radial gasoline|
|Torque||Net: 584 ft-lb@1,800rpm
Gross: 590 ft-lb@1,700rpm
|Transmission||Spicer Mfg. Corp. No. 89, synchromesh, 5 speeds forward, 1 reverse|
|Steering||Controlled differential, steering levers|
|Brakes||Mechanical, external contracting|
|Type||Road wheels||Track return rollers|
|Torsilastic||10 independently sprung and 1 fixed/track||2/track|
|Drive sprockets||Idlers||Shock absorbers||37-alternate-engaged-tooth front drive||33-tooth adjustable sprocket at rear of track||None|
|Outside guide, dry pin, steel link, extruded grousers|
|Shoes/track||73||Ground contact length||126.5"
|Max level road speed||15mph
|Max water speed||7mph
|Min turning diameter||30', land
|Max vertical obstacle||36"
|Angle of approach||35°||Angle of departure||30°|
|Max fording depth||Floats||Cruising range||~150mi, roads
LVT4 was a remodeled LVT2, where the engine was moved from the rear of the vehicle to behind the driver's cab, yielding a larger cargo area and allowing a rear loading ramp to be installed. Applique armor could be attached to the LVT4: .5" (1.3cm) armor on the front and .25" (.64cm) on the sides, but this reduced the LVT4's payload by 3000lbs (1360kg). The LVT4's cab had two large glass windows and two roof hatches, and three armored cabs could be installed as well, with .5" (1.3cm) armor to the front and .25" (.64cm) armor on the top and sides. The front panel of the early cab was solid, with the driver's hatch on the front plate opening outward for observation (much like the LVT2's). A periscope was installed in each roof hatch, and these were originally covered by a plastic hemisphere, but these plastic covers were eliminated later. Later armored cabs were fitted with a ball-mounted .30cal machine gun at the assistant driver's position, and the final armored cabs had the ball-mounted MG as well as vision blocks for the driver and assistant driver in place of the driver's earlier vision panel. This final version also lacked the driver's periscope.