LT4 377" Long Block
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$21,495.00Realize 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.
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 |