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Chevrolet Performance HT383 Manual De Especificaciones Y Funcionamiento página 8

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Fuel Pump:
This HT383 engine does not include a fuel pump. The fuel system must be capable of supplying adequate
fuel volume at a minimum of 6 psi pressure when the engine is operating at wide open throttle (WOT). A high
volume, in-line electric fuel pump is available from Chevrolet Performance Parts, part number 25115899. This
heavy duty pump flows 72 gallons per hour at 6-8 psi outlet pressure.
Also, the HT383 engine has a provision for a mechanical fuel pump. There are two mechanical fuel pumps
available from Chevrolet. Part number 12355612 is recommended for street performance. Part number
12355613 is recommended for competition.
Spark Plugs/Spark Plug Wires:
The recommended spark plugs for the HT383 engine are part number 19300749 (AC# R44LTS). These are
for general street and performance use. If you plan to use this engine mostly for competition racing, you may
want to change to a colder spark plug such as R42LTS. If you are installing the engine in a vehicle originally
equipped with a small block V-8 with high energy ignition (HEI), standard replacement spark plug wires can
be used. The HT383 engine does not include spark plug wires. Part number 12361051 can be used. These
heavy-duty wires come with 90° spark plug boots, and the Chevrolet Performance logo stamped on the wires.
Chevrolet Performance sells a spark plug wire loom kit, part number 12496806. The brackets in this kit are
stainless steel, with the "Bow Tie" logo laser cut into them. This kit can be used with the HT383. The brackets
bolt to the side of the cylinder heads.
Rocker Covers:
This HT383 Engine comes equipped with black stamped steel, center hold-down bolt rocker covers. Chevrolet
Performance offers several valve cover options if you would like to dress up your engine. See the catalog or
visit
chevroletperformance.com
PCV System:
The HT383 engine does not come with rocker cover grommets. It is recommended to use grommet part
number 3989350 with these rocker covers.
1. Install PCV valve, part number 6487779, into the grommet in the rocker cover on the left hand side of
the engine.
2. Attach one end of the PCV hose, part number 9438373, to the PCV valve. Attach the other end of the hose to
the rear port on the carburetor.
3. Add a breather to the right valve cover such as 19131218. The PCV system must have a fresh air intake to
function properly.
Thermostat:
It is recommended that the cooling system have a 180°F thermostat, part number 10202456. Also, use
thermostat housing, part number 10108470, and gasket, part number 10105135.
Distributor:
GM recommends the use of the HEI distributor, part number 93440806, on the HT383 engine. It was used
throughout the testing on this and many of their other crate engines and has proven to be very reliable for
a performance engine.
To install the distributor use connector, part number 8917052, to attach the tachometer wire to the distributor.
You will also need a distributor hold-down clamp, part number 10096197, and fastener, part number 09439905,
to secure the distributor to the intake manifold. When installing the distributor it is recommended to use a "Moly-
Lube" type lubricant applied to the distributor gear. Coat the gear generously with the Moly-Lube using a small
brush. This lube will aid in the break-in of the distributor gear and camshaft gear upon start up.
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.
for more information.
REV 04OC17
DATE
06DE16
04OC17
19355751
PART NO.
REVISION
INITIAL RELEASE - JIM COVEY
REVISION - JIM COVEY
8
27
SHEET
OF
AUTH
N/A
N/A

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