Chevy 350 Vortec heavy-duty replacement engine will provide the OE horsepower and torque specifications while adding high-quality durable internals for long-term reliability. New harmonic balancer, oil pan, timing cover, and valve covers come pre-installed allowing less labor time swapping parts around. This engine features precision machine work and final cylinder honing all on computer-controlled machinery.

3 Year/100,000 Mile GM Warranty

Chevy Crate Engine Break-In Guide

Engine Specifications

Power Rating: 

•  Horsepower: 255 HP
• Torque: 330 ft.-lbs.

Block Information:

• Displacement: 350 ci, 5.7L
• Cast iron
• 4-bolt main
• 1-piece rear main seal
• 9.025 in. deck height
• 4.000 in. bore
• Dipstick provisions on both driver and passenger side
• Mechanical fuel pump capable (no eccentric on camshaft)

Rotating Assembly:

• Stroke: 3.480 in.
• Crankshaft: Forged 1053 steel
• Balance: External rear, internal front
• Rods: Powdered metal 5.7 in.
• Compression Ratio: 9.4:1
• Pistons: Hypereutectic with graphite coating
• Rings: Mahle Clevite

Camshaft Specs:

• Camshaft: Hydraulic roller
• Cam Duration @ .050 in.: Intake 191 / Exhaust 196
• Cam Lift: Intake 0.414 in. / Exhaust 0.428 in.
• Timing Chain: Single-row roller chain

Cylinder Head Information:

• Cylinder Heads: Vortec cast iron
• Combustion Chamber: 64 cc
• Intake Runner: 165 cc 
• Valve Size: 1.940 in. Intake / 1.500 in. Exhaust
• Rocker Arms: Stamped steel 1.5
• Valve Seats: Alloy insert

Oil Pan Information:

• Oil Pan: Black 4 quart
• Oil Pump: Melling stock pressure and volume

 Long Block Includes

• Short Block
• Camshaft
• Timing Set
• Cylinder Heads
• Valve Covers
• Timing Cover
• Oil Pan
• Oil Pump & Pickup Tube

19432779 supersedes 12691672

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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