**No core required**

 

There are various changes that were made on the 7.4L/8.2L engine throughout the years. Listed below is a link that will assist you in choosing the correct longblock for you application.Technical Tips. This NEW G.M. service longblock is the replacement engine for 330 Hp 1987 - 2002 models with the single piece main seal and oval port heads. The 330 Hp rating was an advertised number not the actual produced power number. Engine comes complete with cast aluminum valve covers, an 8 quart oil pan, composite timing cover, and harmonic balancer. However it does not include the intake manifold, water pump, or flywheel.

 

Note: There is no provision for mechanical fuel pump, electric fuel pump must be used

 

Product Specifications:

Type: 90° 7.4L V8

Displacement:454 cid(7441.06cc)

Compression Ratio: 9.4:1

Valve Configuration: Pushrod Actuated

Overhead Canted Valves

Valve Lifters: Hydraulic Roller

Bore x Stroke: 4.25x 4.00in (107.95x101.60mm)

Main Bearing Caps:4-Bolt Cast Iron

Balance Method: External

Horsepower: 305 hp

Materials:

Block: Cast Iron

Cylinder Head: Oval Port - Cast Iron (with exhaust valve seat inserts)

Intake Manifold: Customer Supplied

Firing Order: 1-8-4-3-6-5-7-2

Oil Pan Capacity: 8qt

Fuel Types: Gasoline (unleaded)

Engine Rotation: Clockwise (from the front)

Paint Protection: Component Painted

Shipping Weight: 630lb (286 kg)

 

For more details about product installation, select the following link for details. Engine Installation Information….

 

Includes an Up to 12 month limited warranty.

 

Correction to ISO 3046/SAE J1228. Actual power levels may vary depending on OEM calibration and application.

 

All specifications, availability, and pricing listed are based on the latest product information available at the time of publication.The right is reserved to make changes at any time without notice. Includes an Up to 12 month limited warranty. Correction to ISO 3046/SAE J1228. Actual power levels may vary depending on OEM calibration and application. All specifications, availability, and pricing listed are based on the latest product information available at the time of publication.The right is reserved to make changes at any time without notice.