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BETTER-THAN-REBUILT MARINE & STREET PERFORMANCE LONGBLOCKS REMANUFACTURED LONGBLOCK ENGINES for:
Volvo Penta, Mercury Marine, Mercruiser, OMC.
454 and other engines often allowed for core exchange.
For technical questions about our engines, please call ( show contact info ), days or evenings.
Please note, all prices are in US dollars.
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502 8.2L roller cam; roller lifter equipped 1996-2002 GEN 6 STREET PERFORMANCE OR MARINE LONGBLOCK
IN STOCK! READY TO SHIP!
425 HP $4,290 + $2,100 Core
This engine has a forged steel crankshaft, dimple rods with 7/16ths or ARP rod bolts, hydraulic lifters, 9 1/2 to 1 compression forged pistons, Speed Pro low tension moly piston rings, four bolt mains, remanufactured rectangular port heads with oversized stainless steel valves, performance valve springs, Viton PC seals, hardened keepers, and high strength retainers.
Although this engine has better than automotive brass freeze plugs, drain taps and Fel-Pro stainless laminated Performance/Marine head gaskets and marine paint, for marine use, it is also available with a choice of three different camshafts for auto, truck and RV/motor home use depending on your application.

1966-1990 MARK 4 7.4L / 454 c.i.d. Big block Chev 425 HP
IN STOCK! READY TO SHIP!
$2,780 Longblock + $1,550 Core
MARK 4 2 piece rear seal, four bolt mains rectangular port cast iron cylinder heads, upgrade cam kit, performance pistons, dimple or ARP rod bolts. Options- roller rockers & pushrods add $350. Steel crankshaft add $500. Reverse rotation add $300.

1972 and earlier 250 Chevy inline 6 cylinder marine longblock 165 HP. Chevrolet OMC Mercruiser.
BETTER-THAN-REBUILT PREMIUM REMANUFACTURED ENGINE.
IN STOCK! READY TO SHIP!
$1990.00 USD Long block + $500.00 Core deposit + Shipping*
For Auto or Marine application. Brass freeze plugs, marine camshaft.
Please note, for marine application this straight 6 chevrolet longblock
lacks/DOES NOT have the threaded ear at the right front bottom of the block.
Block casting #: 127, 466, 575, 675, 855.

This fully assembled Chevrolet remanufactured long block is superior to
a simply rebuilt engine, which may have used parts installed. Our straight 6
GM 250 has a new camshaft, new valves, new chain set, new bearings,
new seals, new freeze plugs and comes with a complete gasket kit and
a new oil pump.

502 8.2L roller cam & roller lifter equipped 1996-2002 GEN 6 MARINE & STREET PERFORMANCE LONGBLOCKS
425 HP $3990 + $1,900
475 HP $4,890 + $1,900 Core
500 HP w' aluminum rectangle port heads $5,590 Long block + $1,900 Core
For reverse rotation in above roller engines, add $500!

-502 (8.2L) Bowtie Mark 4 MARINE & STREET PERFORMANCE LONGBLOCKS
425 HP $3,790 + $1900 core.
475 HP $4,390 + $1900 core.
500 HP $4,690 + $1900 core.

The above engines have forged steel crankshafts, dimple rods with 7/16ths or ARP rod bolts, hydraulic lifters, 9 1/2 to 1 compression forged pistons, Speed Pro low tension moly piston rings, four bolt mains, remanufactured or new rectangular port heads with oversized stainless steel valves, performance valve springs, Viton PC seals, hardened keepers, and high strength retainers. Although these engines have better than automotive brass freeze plugs, drain taps and Fel-Pro stainless laminated Performance/Marine head gaskets and marine paint, for marine use, they are also available with a choice of three different camshafts for auto, truck and RV/motor home use depending on your application.

-540 (8.6L) Bowtie High Performance MARINE MK4 long block Engines
540 HP MARK 4 540 c.i.d. w/aluminum rectangle heads $5,990 + $1,900 Core
600 HP 540 c.i.d. BOWTIE standard rotation w/aluminum rectangle heads $6,690 Longblock + $1,900 Core
For reverse rotation in above engines, add $300. These 540 engines have rectangle port cylinder heads with stainless steel valves, roller rockers, performance cam and lifters, SCAT steel crankshaft and forged connecting rods, forged pistons, Speed Pro Moly piston rings, Federal Mogul main and rod bearings, Melling oil pump and double roller timing chain set. The block has @ 4.5" bore X 4.25" stroke. This engine has upgrade brass freeze plugs, drain taps and Fel-Pro stainless laminated Performance/Marine head gaskets.

1991-1995 GEN V marine 7.4 L / 454 c.i.d. STANDARD rotation 310-320-330-340-350 HP $2,090 Longblock + $950 Core . 1pc rear seal #182 block, #156 oval port heads, std rotation. For reverse rotation, add $300.
1991-1995 GEN V 425 HP longblock replaces 420 and 425 HP engines directly and may upgrade 380 and 385 HP engines that currently have rectangle port cylinder heads with fuel system changes. $2,690 Longblock + $1,550 Core . One piece rear seal #182 block, std rotation, rectangular port heads. For reverse rotation, add $400. Steel crank add $400.

3.0 L 181 c.i.d MARINE Premium Remanufactured Longblock Engine.
Replaces Mercruiser, Volvo-Penta, OMC, Hardin, Cobra, Crusader, Marine Power, Chevy, GMC, Thermo-electron, Flagship, Yamaha, Pleasurecraft and other inboard engines.

1974-1989 3.0 L $1,890 Longblock + $500 Core Deposit
This engine has become exceedingly rare as they haven't been made since 1989, and a good percent of them get freeze cracked every year. For identification, this engine has a two piece rear seal, the two starter bolts are parallel to the 153 tooth flywheel, and the cylinder head has either the tall port or Siamesed port. We have engines available that match cylinder head configurations illustrated in the first, second and third images in the picture above.

Please be aware that if you purchase a newer 3.0 Liter engine for this application you will need to buy a $200 flywheel, $150 starter, $200 coupler and $300 manifold in order to convert the newer engine to your application. You may be able to get it to work with the existing manifold, but expect a 20 HP power loss. This engine is an exact replacement for the 1989 and earlier applications.

1990 & Newer 3.0 L $1,890 Longblock + $800 Core Deposit
For identification, this engine has a one piece rear seal, diagonal starter bolt holes for the 168 tooth flywheel, and the tall port cylinder head.
THE 3.0 L ENGINE IS ALSO AVAILABLE FOR INDUSTRIAL/FARM/OTHER EQUIPMENT.
Although these engines have the superior brass freeze plugs, drain taps and Fel-Pro stainless laminated Performance/Marine head gaskets for marine use that are better quality than car or truck versions, these engines are also available with a choice of three different camshafts for forklift, generator and industrial applications, usually at no extra cost.

1962-1986 2.5 L $1,690 Longblock + $500 Core Deposit

For identification, this engine has a two piece rear seal and the cylinder head has either the tall port or Siamesed port. These engines are available for marine, auto, truck and industrial applications.

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MACHINING, ASSEMBLY and TESTING OPERATIONS
The block, crank, rods and head are chemically cleaned in a sodium hydroxide jet stripper and Magnafluxed. Typically, cylinders are bored over and chamfered with two-stage plateau honing on the cylinder walls using Sunnen Honing Equipment, heads surfaced, valves refaced or replaced w' guides or liners, never knurled, connecting rods are checked for alignment and cracks, re-sized, and shot-blasted. Crankshaft is Magnafluxed, chem-stripped, re-machined and micro-polished. We fit new statically balanced pistons with Sealed Power piston rings and SS-50 stainless steel oil control rings plus new wrist pins. Bottom end is align-honed if necessary. The engine typically comes with a Melling oil pump, Federal Mogul main and rod bearings, Dura-Bond cam bearings, new marine cam shaft, matching timing gear set, hydraulic lifters, push rods, rocker arm assemblies, Fel-Pro Marine Gasket Set, brass freeze plugs and drain taps, and marine alkyd enamel paint.

ALL engines are hot run-tested at 180F on a SIM Tester at speed allowing us to check compression, test cylinder leak down, pump up the lifters, break in the piston rings, view oil flow and oil pressure to each bearing in the engine, impregnate the internal surfaces with zinc break-in additive, verify valve timing and measure each cylinder's piston ring drag on the cylinder walls.
Engines are heavy bagged with anti-corrosion paper, cradled and protected prior to crating.

Export shipping and ISPM-15 Euro compliant crating is available.

* Please call or email for shipping quote. Include your contact details along with U.S. zip code
or country and city if outside the U.S.

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WARRANTY
All engines come standard with a one year/unlimited hour parts and labor warranty. A two year extension is available at an additional cost.
CORE RETURN
30 days allowed for core return. Core returns subject to rebuild-ability requirements. Freeze cracked blocks usually qualify for 50%. Call for value of dissimilar cores.

For technical questions call ( show contact info ), days or evenings.

CHECK OUT OUR GARAGE SALE AD POSTED SEPARATELY FOR ENGINE PARTS, SHORTBLOCKS, CRATE MOTORS FOR CHEVY 305, 350, 366, 396, 402, 427, 454, 496, 8.1L VORTEC ENGINES.

PLEASE CALL ABOUT SHORT BLOCK, LONG BLOCK, CRATE, TURNKEY ENGINES FOR: AUTO, TRUCK, MARINE, RV/MOTORHOME, INDUSTRIAL, FARM EQUIPMENT, SNOW PLOWS AND MORE!
  • do NOT contact me with unsolicited services or offers

post id: 6793400430

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