
DMM6 Remanufactured Crate Engine for Marine Applications with 1987-1995 Small Block Chevy 350ci/5.7L
- Remanufactured Marine Crate Engine
- 1987-1995 Small Block Chevy V8 350ci/5.7L
- 1 Piece Rear Main Seal
- Standard Rotation
- 260hp Rating
ATK Core Return Process
JEGS and ATK appreciate your business and want to ensure that your core return is as smooth as possible.Please CLICK HERE for ATK Core Return Process
Notes:
- Block Cast #: 548, 526, 148,638
- Standard rotation
- Flat tappet cam
- 2 bolt main
- Center-bolt valve covers
- Steel front cover
- 12 bolt intake
- 1 piece rear main seal
Engine Break-In Procedure
Use conventional or break-in oil (non-synthetic) for the first 600 miles of operation. Do not drive for long periods at any single speed, always vary your speed. Do not tow a trailer or put other heavy loads on the vehicle. Check the engine oil and coolant levels daily.
At 600 Miles change the engine oil and filter using conventional (non-synthetic) oil. Check fuel and ignition settings; adjust valves (where applicable).
After the first 5,000 of service synthetic engine oil may be used. Follow your vehicle owner’s manual for service intervals.

![Engine Assembly Lube [4 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28000.jpg)

![Break-In/Engine Oil Supplement [12 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28060.jpg)
![Engine Stand [1000 lb. Capacity]](https://www.jegs.com/images/mini_200/500/555/555-80040.jpg)
![Blue RTV, Temperature Resistant up to 500 degrees [3 oz. Tube]](https://www.jegs.com/images/mini_200/500/555/555-28030.jpg)
![Intake Manifold Gasket Set for Small Block Chevy [Port Size: 1.280 in. x 2.090 in.]](https://www.jegs.com/images/mini_200/500/555/555-210001.jpg)