The M8's hull was completely welded except for some of the front, top, and rear, which could be removed for maintenance.
To make room for the turret the front hatches for the driver had to be moved forward.
The M8 was powered by two Cadillac V8 engines.
As the M8 only carried 46 rounds, often an ammunition trailer was fitted.
The 75 mm gun fired a 18 lb HE shell at a muzzle velocity of 1,250'/sec. The .50 cal MG fired at 2,900'/sec.
Rate of fire for howitzer was 25 rounds/minute for a range of 9,610 yards.