LS7 427" N/A - Nitrous Long Block

LS7 427" N/A - Nitrous Long Block

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LS7 427" N/A - Nitrous Long Block

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$19,645.00

Daily drivable 720hp is effortless with this 427” LS7. Starting up top with the cylinder heads, we install CHE precision manganese bronze valve guides before running our in-house CNC porting and assemble with your choice of quality components. Bottom end begins with your choice of trued and indexed 4.000” crankshaft with Callies Compstar or Ultra connecting rods. Custom forged Wiseco pistons fill the 4.125” cylinders that have been honed to perfection. No matter what you plan to power, this LS7 will provide miles of dependable service.

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Description

Daily drivable 720hp is effortless with this 427” LS7. Starting up top with the cylinder heads, we install CHE precision manganese bronze valve guides before running our in-house CNC porting and assemble with your choice of quality components. Bottom end begins with your choice of trued and indexed 4.000” crankshaft with Callies Compstar or Ultra connecting rods. Custom forged Wiseco pistons fill the 4.125” cylinders that have been honed to perfection. No matter what you plan to power, this LS7 will provide miles of dependable service.

Engine Overview

Details

Displacement: 427" Bore: 4.125"
Power Output (HP): 700HP Stroke: 4.000”
Compression Ratio: 12.0:1 Camshaft Type: Hydraulic Roller
Max RPM: 7400 Oil System Type: Wet Sump
Port Configuration: LS7 Fuel Type: 91-93 Octane Gasoline
       

Block: GM LS7 Timing Chain: Roll Master Double Roller w/ Billet Gears & Torrington Bearing
Crankshaft: Callies 4340 Compstar Crankshaft w/ LME Blueprint Process Lifters: GM LS7 Hyd. Roller Lifters w/ GM Lifter Trays
Connecting Rods: Callies Compstar H-Beam w/ ARP 2000 7/16" Bolts Push Rods: Manley One Piece Chromoly 3/8" x .080” Wall
Pistons: Wiseco Forged Nitrous w/ Gas Ports  Rocker Arms: GM LS7 w/ Trunion Modification 
Wrist Pins: Tool Steel Head Studs: ARP 12pt.
Ring Pack: NPR Stainless Top (for high heat applications) Napier Second, 3mm Oil Head Gaskets: GM LS9 MLS
Bearings: Clevite H-Series Main & Rods, Dura Bond One Piece Cam Bearing Oil Pump: Katech
Main Studs: ARP Timing Cover: GM LS2 Front  w/cam Sensor
Cylinder Heads:

LME / Brodix CNC Ported & Prepared LS7

388cfm Int. / 266cfm Exh. 

Valley Cover: GM LS2 
Valves: 

2.200" Hollow Titanium Intake

1.600" Stainless Exhaust

Oil Pan: GM LS7
Valve Springs: BTR Platnum Polished Dual Valve Springs, Titanium Locks and Retainers Rear Cover: GM LS7
Camshaft: LME/Cam Motion Custom Billet Core  Balancer: ATI 10% Over Drive SFI w/ ARP Bolt

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