Publicidad
Idiomas disponibles
Idiomas disponibles
11. Drive the next 500 miles under normal conditions or 12 to 15 engine hours. Do not run the engine at its
maximum rated engine speed. Also, do not expose the engine to extended periods of high load.
12. Change the oil and filter. Again, inspect the oil and oil filter for any foreign particles to ensure that the engine is
functioning properly.
13. Do not use synthetic oil for break-in. It would be suitable to use synthetic motor oil after the second
recommended oil change and mileage accumulation. In colder regions, a lower viscosity oil may be required
for better flow characteristics.
HT383 Engine Specifications:
Displacement: ................................................... 383 cubic inches
Bore x Stroke: ................................................... 4.005 inch x 3.80 inch
Compression ..................................................... 9.1:1
Block: ................................................................ Cast iron, four-bolt intermediate mains
Cylinder Head: .................................................. Cast iron Vortec
Valve Diameter (Intake/Exhaust): .............. 1.94"/1.50"
Chamber Volume: ............................................. 64cc
Crankshaft: ........................................................ 4340 Forged steel, 1 piece rear seal
Connecting Rods: ............................................. 5.7" Forged, 3/8" studs
Pistons: ............................................................. Hypereutecic, 244-T5 aluminum alloy
Rings: ................................................................ Plasma Moly
Camshaft: .......................................................... Hydraulic roller tappet
Lift: .............................................................. .431" intake, .451" exhaust
Duration: ..................................................... 196° intake, 206° exhaust @.050" tappet lift
Centerline: .................................................. 108° ATDC intake, 116° 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
Valve Lash: ........................................................ 1/2 turn down from zero lash
Fuel: .................................................................. Unleaded - 93 (R+M/2)
Maximum Engine Speed: ................................. 5000 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.
HT383 Crate Engine Specifications
TITLE
ALL INFORMATION WITHIN ABOVE BORDER TO BE PRINTED EXACTLY AS SHOWN ON 8 1/2 x 11
WHITE 16 POUND BOND PAPER. PRINT ON BOTH SIDES, EXCLUDING TEMPLATES.
TO BE UNITIZED IN ACCORDANCE WITH GM SPECIFICATIONS.
19355751
REV 04OC17
PART NO.
DATE
06DE16
INITIAL RELEASE - JIM COVEY
04OC17
REVISION - JIM COVEY
6
SHEET
REVISION
27
OF
AUTH
N/A
N/A
Publicidad
