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8.1 Hp3 Engine 525hp on 2040-parts.com

Location:

florida, United States

florida, United States
8.1 HP3 engine 525hp, image 1
“longblok w intake”
Brand:Mercruiser Engine(HP):525

Came direct from GM, been disassembled and changes rings then reassembled std/std/std


These HP3 engines are hard to come by these days..

The HP3 differences from 496HO includes: custom ported heads (iron), GM ECU/sensors and programing with increased rev limit to 5400 rpm, Crane roller rockers, Crane roller lifters, Trend high strength push rods, custom Crane cam (I have a HP3 cam if you are interested), CompCam Nascar valve springs and hardware, high volume oil pump, Coyle timing sproket, fuel pressure set to 58 psi (on Mercruiser conversion you have to add an adjustable fuel pressure regulator). The original HP3's also had the stock intake manifolds Extrude Honed to improve flow somewhat

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