GM 5.7 Marine Engines

GM 5.7 Marine Engines

GM 5.7 Marine Engines
SKU:
ATK-DM01.1
$5,153.99
$3,562.99
$1,591.00
Availability:
Ship 7-10 Days
Ships next business day if ordered in the next:

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GM 5.7 Marine Engines

Why buy an ATK Marine Engine? ATK is a leading manufacturer of marine engines. ATK designs engines that are made with performance in mind and long lasting durability is a priority. Marine environments require a different type of engine construction. These engines need to be able to stand the rigors and conditions of marine environments and these ATK GM 5.7 marine engines have you covered. Quality is key with ATK and they take pride in the fact that there are over 150 steps involved in ensuring an engine is ready for resale. There are many steps involved in remanufacturing each ATK engine including the GM 5.7 Marine Engine.

The GM 5.7 Marine Engine has been used in marine applications since 1986 and designed to meet or exceed O.E Specifications. Engine parts are vigorously inspected and tested. The engine blocks and cylinder heads are magnafluxed to determine if there are any cracks. Camshafts bearings are examined to ensure accurate center-to center clearance and precision ground or replaced to maintain the O.E. profile. Pistons and rod assemblies are blanched to minimize engine vibration. Timing belts, chains, and gears are all replaced with new parts.

Testing is key and all ATK engines including the GM 5.7 Marine Engine are run through rigorous testing and quality control processes for compression, oil leaks, unusual engine noise or vibrations, and ensure all parts are in good original working order before shipment. Oil pump, oil pump kit, and installation gasket set are supplied with each engine. Free freight available in the continental U.S.and there is no core charge.

Featured procedures include:

  • Engine blocks are magnafluxed, cylinders bored and precision-honed, and main saddles line-honed to exacting O.E. specifications
  • Camshaft bearings line-bored for accurate center-to-center clearance
  • Engine blocks and cylinder heads precision surfaced to insure proper sealing
  • Cylinder heads magnafluxed or dye checked and machined for three-angle valve seats
  • Crankshafts stress-relieved, precision ground and micro-polished for optimum durability and surface finish
  • Camshafts precision ground or replaced with new to maintain the O.E. profile
  • Tested for compression, oil pressure, oil leaks, unusual engine noise, and general operating condition before shipment
  • Oil pump or oil pump kit is supplied with each engine
  • Premium installation gasket set is supplied with each engine
  • All bearings are replaced with new
  • Timing belts, chains, gears are replaced with new
  • All rubber products are O.E. quality (i.e. main seals, valve stem seals, cam seals)
  • All ATK remanufacturing facilities are ISO 9001 and QS 9000 certified

No Core Charge

Free Freight to anywhere in the continental U.S

18 Month No Fault Warranty

  • Unlimited Hours
  • Includes Labor, Towing & Fluids

Marine Application Chart

Call Customer Service for more details 1-877-388-2628

# Year Description Part #
1 1964-1980 GM 5.7 / 350/ 260HP 2 pc rear seal, 8.5:1 CR, 2 bolt main, port side dipstick. ATK-DM01
2 1964-1980 GM 5.7 / 350/ 270HP 2 pc rear seal, 9.0:1 CR, 2 bolt main, port side dipstick. Use DM03 for Reverse rotation. ATK-DM02
3 1964-1980 GM 5.7 / 350/ 270HP Reverse rotation, 2 pc rear seal, 9.0:1 CR, 2 bolt main, port side dipstick. Use DM02 for STD rotation ATK-DM03
4 1964-1980 GM 5.7 / 350/ 275HP 4 bolt main, 2 pc rear seal, 9.0:1 CR, 1.94 Intake valve, Flat tappet cam, port side dipstick.  ATK-DM08
5 1980-1985 GM 5.7 / 350/ 260HP STD rotation, 2 bolt main, 2 pc rear seal, starboard side dipstick. Valve cover bolts on perimeter. Use DM21 for reverse rotaion Casting number:  909, 979, 776, 777, 371, 778, 535, 551, 627, 058 ATK-DM20
6 1980-1985 GM 5.7 / 350/ 260HP Reverse rotation, 2 bolt main, 2 pc rear seal, starboard side dipstick. Valve cover bolts on perimeter. Use DM20 for standard rotaion Casting number:  909, 979, 776, 777, 371, 778, 535, 551, 627, 058 ATK-DM21
7 1986 GM 5.7 / 350/ 260HP Std rotation, 1pc rear seal, head casting 624, valve cover bolts to perimeter Casting number: 548, 526, 148, 638 ATK-DM96
8 1986-1987 GM 5.7 / 350/ 260HP Standard rotation, 4 bolt main, 1 pc rear seal, valve cover bolts on perimeter. Use DM23 for reverse rotation.  Casting number:  245, 379, 010, 014, 678, 388, 618 ATK-DM22
9 1986-1987 GM 5.7 / 350/ 275HP Standard rotation,cam upgrade,  4 bolt main, 1 pc rear seal, valve cover bolts on perimeter. Magnum option, 275hp   Casting number:  245, 379, 010, 014, 678, 388, 618 ATK-DM22CU
10 1986-1987 GM 5.7 / 350/ 260HP Reverse rotation, 4 bolt main, 1 pc rear seal, valve cover bolts on perimeter. Use DM22 for standard rotation.  Casting number:  245, 379, 010, 014, 678, 388, 618 ATK-DM23
11 1987-1995 GM 5.7 / 350/ 260HP 4 bolt main, 1 pc rear seal, flat tappet cam, valve covers bolt thru center, steel front cover. 12 bolt intake.  Casting number: 548, 526, 148, 638 ATK-DMA2
12 1987-1995 GM 5.7 / 350/ 275HP Std rotation, Cam upgrade,  4 bolt main, 1 pc rear seal, flat tappet cam, valve covers bolt thru center, steel front cover. 12 bolt intake. Magnum option, 275hp  Casting number: 548, 526, 148, 638 ATK-DMA2CU
13 1987-1995 GM 5.7 / 350/ 260HP  Complete with oil pan, front cover and valve covers installed.  4 bolt main, 1 pc rear seal, flat tappet cam, valve covers bolt thru center, steel front cover. 12 bolt intake.  Casting number: 548, 526, 148, 638 ATK-VMA2
14 1987-1995 GM 5.7 / 350/ 260HP  Reverse rotation, 4 bolt main, 1 pc rear seal, flat tappet cam, valve covers bolt thru center, steel front cover. 12 bolt intake.  Casting number: 548, 526, 148, 638 ATK-DMA3
15 1987-1995 GM 5.7 / 350/ 260HP Reverse rotation,Complete with oil pan, front cover and valve covers installed. 4 bolt main, 1 pc rear seal, flat tappet cam, valve covers bolt thru center, steel front cover. 12 bolt intake.  Casting number: 548, 526, 148, 638 ATK-VMA3
16 1996-2005 GM 5.7 / 350/ 260HP Complete with oil pan, front cover and valve covers installed.  4 bolt main, 1 pc rear seal,Roller cam, valve covers bolt thru center, plastic front cover w/ crank sensor hole. 8 bolt intake. Electric fuel pump   Casting number:  880 ATK-VMM9
17 1996-2005 GM 5.7 / 350/260HP  Complete with oil pan, front cover and valve covers installed.  4 bolt main, 1 pc rear seal,Roller cam, valve covers bolt thru center, plastic front cover w/o crank sensor hole. 8 bolt intake. Electric fuel pump   Casting number:  880 ATK-VMM9S
18 1996-2005 GM 5.7 / 350/260HP 4 bolt main, 1 pc rear seal, Roller cam, 8 bolt intake, electric fuel pump.   Casting number:  880 ATK-DMM9
19 1996-2006 GM 5.7 / 350/ 260HP Std rotation, 4 bolt main, roller cam, steel roller tip rockers, valve covers bolt thru center, plastic front cover. Head casting 906 or 062.   Casting number:  880 ATK-DMM9ST
20 1996-2005 GM 5.7 /350/ 275HP Std rotation, Cam upgrade, 4 bolt main, 1 pc rear seal, Roller cam, 8 bolt intake, electric fuel pump. Magnum option, 275hp   Casting number:  880 ATK-DMM9CU

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