Engine Code "WL" has a 4 BBL(4MV)carburator and is used in MANUAL Transmission applications. It has a 10.75:1 compression ratio and requires premium fuel.

Engine Code "XG" has a 4 BBL(4MV)carburator and is used in AUTOMATIC Transmission applications. It has a 10.75:1 compression ratio and requires premium fuel.

Both of these motors developed 390 Hp. at 5200 RPM and the developed torque was 465ft./lbs. at 3400 RPM

The firing order for both is 1-8-4-3-6-5-7-2. The cylinder numbers from front to rear: Right bank 2-4-6-8, Left bank 1-3-5-7

The bore and stroke is 4.121 x 4.000

Normal oil pressure is between 30 - 40 psi

Normal fuel pump pressure is between 5 - 6.5 psi