For those not familiar with the two-stroke Detroit Diesel engines, the 6V92T was a six-cylinder (6) engine in a V configuration (V) with each cylinder having a 92 cubic inch displacement (92) for a total of 552 cid or 9 liters with a turbo-charger (T).
The 8V92 is an eight-cylinder engine in a V configuration with each cylinder having a 92 cubic inch displacement for a total of 736 cid or 12 liters.
In both cases, the engines were available in many different horsepower configurations but the 8V's generally turned out more horsepower and torque than the 6V's.
In RV applications, the 6V92T engines with the Detroit Diesel Electronic Control (DDEC) developed horsepower ranging from 245 BHP to 330 BHP range with torque from 775-1050 ft-lb. In the same applications, the 8V92T engines with DDEC developed horsepower ranging from 400 BHP to 500 BHP with torque from 1150-1425 ft-lb. In marine applications, both engines could be tuned to higher output due to the unlimited cooling available from the water.
The 6V92's were typically used in vehicles with lower GVWR's than were the 8V92's. A 25-30,000 lb vehicle might have been fitted with a 6V92 while a 40,000+ lb vehicle would more likely have been fitted with an 8V92.
Both engines developed their peak torque at 1200 rpm.
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