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LT4 377" Long Block

LT4 377" Long Block

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LT4 377" Long Block

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$18,795.00

Realize the potential in your C7 Z06 with this stout 377” workhorse. Composed of forged internals and treated to a host of significant top end upgrades, track days with this brawn long block will never be the same. Keeping the stock forged LT4 crank, we open up the bores to 4.070" and fill with custom forged Diamond pistons. Next we connect the two using 6.125" Callies Ultra rods and .200" wall heavy duty pins. This proven combo will open untapped horsepower in your Z06 while retaining the factory piston oil squirters.

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Description

Realize the potential in your C7 Z06 with this stout 377” workhorse. Composed of forged internals and treated to a host of significant top end upgrades, track days with this brawn long block will never be the same. Keeping the stock forged LT4 crank, we open up the bores to 4.070" and fill with custom forged Diamond pistons. Next we connect the two using 6.125" Callies Ultra rods and .200" wall heavy duty pins. This proven combo will open untapped horsepower in your Z06 while retaining the factory piston oil squirters.

Engine Overview

Details

Displacement: 377” Bore: 4.070”
Power Output (HP): 1200HP Stroke: 3.622”
Compression Ratio: 10.5:1 Camshaft Type: Hydraulic Roller
Max RPM: 7400 Oil System Type: Wet or Dry Sump
Port Configuration: GM Gen V LT4 Fuel Type: 91-93 Octane Gasoline
       

Block: GM Gen V LT 6.2L Aluminum Timing Set: GM LT4 Cam and Crank Gears w/ C5.R Chain
Crankshaft: GM LT4 w/ LME Blueprinting Process Lifters: GM LS7 Hyd. Roller Lifters w/ GM Lifter Trays
Connecting Rods: Callies Ultra H-Beam w/ ARP 2000 7/16" Bolts Push Rods: Trend Performance Series-5 11/32" X .120" Wall
Pistons: Wiseco Forged Nitrous w/ Gas Ports  Rocker Arms: GM LT4 1.8 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 LT4 MLS
Bearings: Clevite H-Series Main & Rods, Dura Bond One Piece Cam Bearings Oil Pump: GM LT4 
Main Studs: ARP Main Studs Timing Cover: GM LT4 Front  w/ Seals and Cam Sensor
Cylinder Heads:

LME CNC Ported & Prepared GM LT4

372 CFM Int. / 260 CFM Exh. 

Valley Cover: GM LT4
Valves: 

2.125" GM Titanium Intake

1.600" Rev Stainless Exhaust

Oil Pan: Select From Options
Valve Springs: BTR Platnum Polished Dual Valve Springs, Titanium Retainers Rear Cover: GM LT4
Camshaft: LME/Cam Motion Custom Billet Core  Balancer: ATI SFI w/ ARP Bolt

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