This is the state of the art setup for your hot rod (310 HP @ 5200 rpm and 340 lb.-ft. Torque @ 4000 rpm).
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Gen 3 Engines And Parts Main Page LS-1 Engine Kit Main Page
LS-1 Engine Kit Pictures LS-1 Engine Kit FAQ
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Cut away LS1 Picture
LS1 Engine Kit
P/N 25534322

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Click here to see FAQ about the LS1 engine kit.

     This is the state of the art setup for your hotrod (320 HP and 330 Torque). This (F-Car) Camaro/Firebird LS1 engine kit includes the LS1 engine complete with fuel injectors, exhaust manifolds, and flex plate. The engine features an aluminum block and cylinder heads with 10.1:1 compression ratio. The engine kit is supplied with ECM, and wire harness that allows this engine to be installed with a four-speed automatic transmission (4L60E) in any 1975 or earlier vehicle.

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Brackets, wiring harnesses, and computers for the LS1, LS2, LS6 and LQ4 can be obtained from Street & Performance.
Street & Performance, Inc.
#1 Hot Rod Lane - Mena, AR 71953
http://www.hotrodlane.cc/
Phone (479)394-5711
Fax (479) 3947113
[email protected]

General Specifications
Displacement 5.7L (5665cc, 346ci) Gross Horsepower¹ 310 @ 5200 RPM, 320 @ 5800 RPM
Bore/Stroke 3.90/3.62 Gross Torque¹ 340 @ 4000 RPM, 330 @ 4400 RPM
Compression Ratio 10.1:1 Maximum RPM 6200
Firing Order 1-8-7-2-6-5-4-3 Out of crate weight. Approximately 390 lbs.
Spark Plug ACDelco 12ACDelco 41-985 Spark Plug Gap .060”, 1.524 mm
Block Specifications
Block Material 319-T5 Aluminum Block Description 90° V, Deep skirt with cast-in iron sleeves.
Bore Spacing 4.40” Deck Height 9.24”
Main Bearings 5 Thrust Bearing Center Bulkhead
Bearing Caps 4 vertical bolts, 2 cross bolts    
Cylinder Head Specifications
Material 356-T6 Aluminum Description Cross flow, wedge combustion chamber.
Ports Symmetrical, intake and exhaust Chamber Volume 67.3 cc
Head Gasket 0.052” compressed    
Crankshaft Specifications
Material Cast Nodular Iron Features Undercut and rolled fillets.
Crank Pin Diameter 2.10” Main Bearing Diameter 2.56”
Piston Specifications
Material Cast Aluminum Description Strutless, flat top.
Compression Ht. 1.34” Weight 15.5 oz.
Induction System
Manifold One-piece composite. Throttle Body 75.0 mm bore dia.
Electronic System
ECM 12480112 LS1 Camaro calibrated Wire Harness 12480113
Note¹:As originally installed in an F-Car Camaro or Firebird.

Aluminum 6-bolt main engine block
Nodular iron crankshaft with undercut and rolled fillets
5.098” powdered metal connecting rods
Flat top, light-weight pistons
3/8” single roller timing chain set
Hydraulic roller camshaft (0.500 lift / 200/203° 0.050 duration)
Symmetrical port heads w/2.00/1.55 valves
1.7 ratio investment cast roller rocker arms
Composite inlet manifold with tuned runners
Single bore throttle body
Return-less fuel rail with 25lb/hr injectors 58 psi
Tubular log-style exhaust manifolds
Cast aluminum oil pan
14-inch flexplate
Engine Mounts