Chevrolet Performance 19419890 Manuel D'installation page 2

Legal and Emissions Information
This publication is intended to provide information about the crate engine and related components. This manual also describes procedures
and modifications that may be useful during the installation of an LS376/480, LS376/525 crate engine. It is not intended to replace the
comprehensive service manuals and parts catalogs which cover General Motors engines and components. Rather, it is designed to provide
supplemental information in areas of interest to "do-it-yourself" enthusiasts and mechanics. This publication pertains to engines and
vehicles which are used off the public highways except where specifically noted otherwise. Federal law restricts the removal of any part of
a federally required emission control system on motor vehicles. Further, many states have enacted laws which prohibit tampering with or
modifying any required emission or noise control system. Vehicles which are not operated on public highways are generally exempt from
most regulations, as are some special interest and pre-emission vehicles. The reader is strongly urged to check all applicable local and state
laws. Many of the parts described or listed in this manual are merchandised for off-highway application only, and are tagged with the
"Special Parts Notice" reproduced here:
Special Parts Notice
This part has been specifically designed for Off-Highway application only. Since the installation of this part may either impair your vehicle's
emission control performance or be uncertified under current Motor Vehicle Safety Standards, it should not be installed in a vehicle used
on any street or highway. Additionally, any such application could adversely affect the warranty coverage of such an on-street or highway
vehicle.
Package Contents:
Item Description
1 Engine Assembly
2 Engine Instructions
Component Information:
The LS376/480, LS376/525 crate engines use stock LS3 components except as noted below. Additional service information not included in this
document can be found from your Chevrolet Performance Parts dealer under the GM 2014 Police LS3 RPO for all components except those noted
below. When servicing or replacing items below, use information for a LS3 GM 2014 Police engine.
Camshaft
The LS376/480 crate engine uses Chevrolet Performance Parts camshaft 88958753, which has a 3-bolt sprocket mounting. The LS376/525 crate engine
uses Chevrolet Performance Parts camshaft 88958770, which has a 3-bolt sprocket mounting.
Camshaft Sprocket and Bolts
Camshaft sprocket 12623754 and bolts 11588723 (Qty 3) are used in conjunction with the 3-bolt camshaft design.
Additional Parts That May Be Needed:
Engine Control System
As indicated above, the LS376/480, LS376/525 crate engines require an engine control system and harness which are available from
your Chevrolet Performance Parts dealer. Check with your dealer or on chevroletperformance.com for the control system packages
that are currently available.
Flexplate/Flywheel
The LS376-480 and LS376-525 crate engines do not include a flexplate nor flywheel. Flexplate P/N 12654640 or flywheel 12571611 are available from
your Chevrolet Performance Parts dealer. Additional kits for both automatic transmissions and manual transmissions installations include the correct
flexplate or flywheel as well as all bolts, shields and necessary hardware.
Pilot Bearing
You must install a pilot bearing in the rear of the crankshaft if the engine will be used with a manual transmission. The pilot bearing aligns the
transmission input shaft with the crankshaft centerline. A worn or misaligned pilot bearing can cause shifting problems
and rapid clutch wear.
Starter
The LS376/480, LS376/525 crate engine does not include a starter. Chevrolet Performance Parts part number 10465385 is matched to this application
and is recommended. See your Chevrolet Performance Parts dealer for details.
LS376/480 and LS376/525 EFI Crate Engines
ALL INFORMATION WITHIN ABOVE
Date
BORDER TO BE PRINTED EXACTLY
19FE20
AS SHOWN ON 8.5 x 11 WHITE 16
POUND NON-BOND RECYCLABLE
19MR20
PAPER. PRINT ON BOTH SIDES,
EXCLUDING TEMPLATES. TO BE
UNITIZED IN ACCORDANCE WITH
GMCCA SPECIFICATIONS.
Quantity
1
1
REV 19MR20
Revision
Init Rel – Blake Nye
Revision – Blake Nye
PART No.
19419890
Auth DR
Title
NA
NA LS376/480 and LS376/525 EFI Crate Engines
PART No.
SHEET
Installation Instructions
19419890
2 of 12
SHEET 2 of 12