454 big block marine engine

454 Chevy 450 HP. Big block Chevy 365-380 HP 2 piece rear seal MARK 4 Two bolt mains fuel efficiency heads upgrade cam kit.

This is a rebuilt 454 Long block that includes.

454 big block marine engine. The 454502 engines were being produced from GMs manufacturing plant located in Tonawanda NY. Once the 81L engines were introduced for long term production the tooling and assembly line processing for the 454502s was converted over to support the 81L engines. There are three different types of the GM Marine based V8 74L 454 cid Marine Engines which were used by Mercrusiser Volvo Penta and Crusader.

Some of these engines are interchangeable and with only a few changes. However the NEW version of this longblock engine is available only for 1987 and up big block Marine Engines. Marine 454 Big Block The long block is essentially the same.

Its all the accessories that are different intake carb exhaust water pump and such. They are tough engines. They are designed to run at a higher rpm than ones in cars.

My Uncles big boat had twin 502 bbc Mercruisers and they ran at 4500 rpm while at cruising speed. ATK HP50 Chevy 454 Marine Base Engine 415HP. This engine is built to be high performance replacement for big block Chevy marine engines.

OE Cast 4000 Stroke Externally Balanced 2pc. Share your knowledge of this product. 9 rows GM 74L 454 cid Big Block V8 LH 1973-1990 EFMGM454LAHO.

1973-1990 GM 74L 454 cid. Required View Options MerCruiser Crusader Volvo Penta OMC Marine Power Indmar Other. Required View Options Generation 4 1984 and Earlier Generation 5 1990-1996 Generation 6 Carbureted 1997-2017 Generation 6 MPI 1997-2017 Assembly Package.

Required View Options Short-Block Long-Block Base Premium. Edelbrock 61555 - Edelbrock Marine-Duty Performer RPM 454 Cylinder Heads. Cylinder Head Marine-Duty Performer RPM 454 Assembled Aluminum Black Anodized 118cc Chamber 290cc Intake Runner Chevy Big Block Each.

Engine Assembly Crate Engine Remanufactured Chevy Big Block 454 74L RPO Code L19 Each. Chevy 454 - Forged - Long Block. This is a rebuilt 454 Long block that includes.

Complete machined GM Gen IV block - CNC blueprint bored torque plate honed CNC square decked line honed hot tank washed. Forged GM dimple rods. 454 Chevy 450 HP.

454 450 Horsepower. 515 LBS of Torque 3250 RPM. Replaces any Big Block Chevy Engine.

ARRIVES READY TO RUN RIGHT OUT OF THE BOX. High Torque Starter 22500. But if you want to use your 454 block get a forged 496 rotating assembly 850 Holley or bigger Vic Jr intake AFR 305 heads HR cam around 240 at 050 solid roller add 8-10 degrees at 050 JE pistons for nearat 101 and make sure to get some good headers.

Big block Chevy 330-350 HP 2 piece rear seal MARK 4 Two bolt mains fuel efficiency heads. Reverse rotation add 300. Big block Chevy 365-380 HP 2 piece rear seal MARK 4 Two bolt mains fuel efficiency heads upgrade cam kit.

Stock Mercury OEM Big Block Chevy 454502 Cast Iron 4 Exhaust Manifold 6 Spacer and Riser Kit - 807078T08. Mercruiser OEM V8 BBC 45474L and 50282L Exhaust Manifold and Riser Kit w 6 Spacer. Manifolds and 4 Risers Constructed from Cast Iron and painted with black corrosion resistant paint.

540 Big Block Chevy Marine Engine Tyler Crockett Marine Engines might dabble in some monster truck and drag race engine building but nearly 95 percent of the shops work is reserved for marine engines like this popular 540 cid big block Chevy built on a Dart block with a 4250 crank in it. The GM marine 454 had a bore of 425 inches and stroke of 4 inches with compression ratio of 81-to-1. The engine breathed through a four-barrel carburetor and ignition was provided by a Delco Electric unit.

The marine 454 weighs 980 lbs and makes 330 horsepower at its maximum RPM of 4400. Chevrolet Performances 454 HO crate engine is a Big-Block bargain an affordable engine with performance specs that will make you think its 1970 all. It is an all-iron engine block and heads with two valves per cylinder.

It retained the same bore diameter as the old 74 L 454 cu in big-blocks but the stroke was upped by 94 mm 037 in to reach 49595 cu in 81 L for a total bore and stroke of 4 1 4 in 437 in 10795 mm 11100 mm. Marine 454 Big Block An engine with no load is an underdamped system that means all the drag that keeps things from running away too fast isnt there and even a good rev limiter has a hard time keeping it from overspeeding and breaking stuff. A load just means it runs out of power to fight against it and reaches a steady state.

Hardcore Horsepower Builds 550-horse 87-octane Big-block On a Budget. By Jason Reiss June 07 2013. Reliable 87-octane big horsepower has been the Holy Grail for both enthusiasts and engine builders for some time now with many choosing forced-induction to achieve that goal.

However boost is not necessary to achieve dyno-twisting numbers. These high-performance GM 454 crate engines are great choices to upgrade your vehicle. Check out our selection of GM performance crate engines for sale today.

454 Big-Block Budget Engine Build - Making Cents We build a 700hp 454 engine for 2403. See all 7 photos. Free shipping on many items.

Mercruiser 454 marine engine used. MERCRUISER BIG BLOCK 454 CU.