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ZZ383 Engine Specifications:
Displacement: ............................................. 383 cubic inches
Bore x Stroke: ............................................. 4.005 inch x 3.80 inch
Compression................................................ 9.7:1 nominal
Block: .......................................................... Cast iron, four-bolt intermediate mains
Cylinder Head: ............................................. Aluminum "Fast Burn"
Valve Diameter (Intake/Exhaust): ......... 2.00"/1.55"
Chamber Volume:........................................ 62cc
Crankshaft: .................................................. 4340 Forged steel, 1 piece rear seal
Connecting Rods: ........................................ 5.7" Forged, powdered metal, 3/8" studs
Pistons: ....................................................... Hypereutecic, 244-T5 aluminum alloy
Rings: .......................................................... Plasma Moly
Camshaft: .................................................... Hydraulic roller tappet
Lift: ........................................................ .509" intake, .528" exhaust
Duration:................................................ 222° intake, 230° exhaust @.050" tappet lift
Centerline: ............................................. 107° ATDC intake, 117° BTDC exhaust
Rocker Arm Ratio: .......................................1.5:1
Timing Chain: .............................................. 8 mm single roller design
Oil Pan: ........................................................ 5-quart (w/ new filter)
Oil Pressure (Normal): ................................ 40 psi @ 2000 RPM
Recommended Oil: ...................................... 10W30 Synthetic (after break –in)
Oil Filter: ...................................................... AC Delco part # PF25
.............................................................. Premium AC Delco part # UPF25
Valve Lash: .................................................. 1/2 turn down from zero lash
Fuel: ............................................................. Premium unleaded - 92 (R+M/2)
Maximum Engine Speed: ............................ 6000 RPM
Spark Plugs:................................................ R44LTS for general usage: R42LTS for racing
Spark Plug Gap ........................................... .040"
Spark Timing: .............................................. 32° maximum @ 4000 RPM with vacuum advance disconnected
Firing Order: ................................................ 1-8-4-3-6-5-7-2
Information may vary with application. All specifications listed are based on the latest production information available at the time
of printing.
ZZ383 Performance Crate Engine
TITLE
19329715
IR 11JL14
PART NO.
7
30
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