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LS1 Engine Specs

Here in this article you will learn about the LS1 Engine Specs , Performance,  Cylinder Heads, Cam Specs & More, Let’s discuss the LS1 Engine Specs  , Valvetrain, performance, and Reviews. The first engine listed is the first GM LS — the 5.7L LS1 that appeared in the 1997 Chevy Corvette.

General Motors’ first Gen. 3 small block engine, the LS1, was utilised in 1997–2004 automobiles. Original LS1 engine specifications are below.

The GM LS and LS Vortec engines were used Across The whole GM Family tree: Chevy, Pontiac, GMC, Cadillac, Buick, and even too! LS liked Saab, Hummer, And Isuzu.

Because LS and Vortec Engines are now found in almost every vehicle, switching them out for more powerful versions or improving their performance is one of the most popular hobbies among car Enthusiasts. These motors Have the capacity to generate a Significant quantity of horsepower.

They Also react Extremely Favourably to modifications, such as Turbochargers, superchargers, high-flow intake Systems, Cylinder Heads, Cams, and nitrogen oxide, all of Which are Available for purchase.

The aftermarket is booming, crate engines are readily accessible, and used motors can be easily found in junkyards. Summit Racing has created a series of detailed guides for every engine in the LS family of engines so that the builders and tuners of engines can find a guide to their projects.

Also, Check Here: isuzu npr diesel

LS1 Engine Specs

LS1 Block Specs

Displacement 5.7L / 346 c.i.d.
Material Aluminum – Semi Permanent Mold
Bore Spacing 4.400 in.
Bore Dia. 3.898 in.
Stroke 3.622 in.
Deck Height 9.240 in.
Thrust Bearing Location #3 Main
Main Cap Style 6-Bolt
Main Housing Bore Dia. 2.751 in.
Cam Housing Bore Dia. (2002-03) Bore 1/5 = 2.326, Bore 2/4 = 2.317, Bore 3 = 2.307
Cam Housing Bore Dia. (2004-07) Bore 1/5 = 2.346, Bore 2/4 = 2.326, Bore 3 = 2.307
Cam-to-Crank Centerline 4.914 in.
Casting Numbers 12550592, 12559846, 12559090, 12560621, 12562174, 12560629, 12559378, 12559846, 12560626, 12561166, 12561168

Engine Ratings

Torque Rating 335-365 ft./lbs.
Horsepower Rating 305-350 hp
Compression Ratio 10.2:1

LS1 Applications

VIN 8th Digit Year Make Model
G 1997-2004 Chevy Corvette
G 1998-2002 Chevy Camaro (Z28 / SS)
G 1998-2002 Pontiac Firebird / Trans Am
G 2004 Pontiac GTO

LS1 CylinderHead Specs

Intake Port Shape Cathedral
1999-2004 Casting Numbers (Center Valve Cover Bolts) 12559853, 12558805, 12560621, 12562174, 12564241
Material Aluminum
Combustion Chamber Volume 67cc
Intake Runner Volume 200cc
Exhaust Port Shape Oval
Exhaust Runner Volume 70cc
Intake Valve Diameter 2.000 in.
Exhaust Valve Diameter 1.550 in.
Cylinder Head Bolt Style Torque to Yield (TTY)
Cylinder Head Bolt Size (1997-2003) (8) M11 x 2 x 155, (2) M11 x 2 x 100, (5) M8 x 1.25 x 45
Cylinder Head Bolt Size (2004) (10) M11 x 2 x 100, (5) M8 x 1.25 x 45
1997-1998 Casting Numbers (Perimeter Valve Cover Bolts) 10215339, 12550592, 12558806

LS1 Rotating Assembly Specs

Reluctor Wheel 24x
Piston Volume 0cc
Wrist Pin Dia. (1997-2004) 0.9449 in (Press Fit)
Connecting Rod Material Powdered Metal
Connecting Rod Style I-Beam
Connecting Rod Length 6.098 in.
Connecting Rod Bolts M9 x 1 x 43
Crankshaft Material Cast Iron
Crankshaft Main Journal 2.559 in.
Crankshaft Rod Journal 2.100 in.
Piston Style Flat Top
Flexplate/Flywheel Mounting Flange 0.857 in.
Piston Material Hypereutectic Cast Aluminum Alloy M124

LS1 Valvetrain Specs

Exhaust Valve Material Steel – Solid Stem
Lifter Body Diameter 0.842 in.
Pushrod Length 7.385 in.
Rocker Arm Mounting Style Pedestal
Rocker Arm Style Die-Cast, Roller Fulcrum
Rocker Ratio 1.7
Rocker Offset None
Valve Spring Style Beehive
Valve Spring Color Natural
Valve Spring Pressure 70 lbs. Seat / 220 lbs. Open
Valve Angle 15 Degrees
Lifter Link Style Plastic Lifter Tray
Intake Valve Dia. 2.000 in.
Exhaust Valve Material Steel – Solid Stem
Exhaust Valve Dia. 1.550 in.
Lifter Style Hydraulic Roller

LS1 Cam Spec

Year Model Int. Duration @ .050 Lobe Separation
1997-99 Corvette 199 117
2000 Corvette 198 115.5
2001-04 Corvette 196 116
1998-2000 Camaro Firebird 198 119.5
2001-02 Camaro Firebird 196 116
Exh. Duration @ .050 Int. Lift Exh. Lift
207 0.472 0.479
209 0.500 0.500
208 0.467 0.479
209 0.498 0.497
208 0.467 0.479

Other Key LS1 Specs

Throttle Body, Fuel Injectors, Oil Pan Specs & More
PCM Warren
Fuel Injector Flow, 2001-04 30 lbs.
Throttle Control, Corvette Drive-by-Wire
Throttle Control, GTO, Camaro/Firebird Throttle Cable
Fuel Injector Flow, 1997-98 29.6 lbs.
Fuel Injector Flow, 1999-2000 27.3 lbs.
Fuel Injector Length (between O-Rings) 2.5 in.
Fuel Injector Connector EV1
Throttle Body 78mm, 3-Bolt
Crankshaft Reluctor Ring 24x
Camshaft Sensor Rear Mount, 1x on cam
Oil Pan, Corvette Batwing Rear Sump
Oil Pan, Camaro/Firebird Rear Sump
Oil Pan, GTO Front Sump
Oil Pump Standard Volume
Intake Manifold LS1

LS1 Engine Review

The LS1 engine is a 5.7-liter, small-block V8 engine manufactured by General Motors from 1997 to 2005. It enjoys a widespread reputation as one of the finest engines ever crafted and has been employed in a diverse range of vehicles, including the Chevrolet Corvette, Camaro, Firebird, Pontiac GTO, and Holden Commodore.

Full review YouTube video check here.

LS1 Engine Specs FAQ

How much HP does an LS1 engine have?

At the beginning for beginning point, the LS1 was a revelation for Chevy enthusiasts.

Its aluminum-based design resulted in it being considerably lighter than previous GM V8s. The performance was outstanding.

It was valued at 345-350 horsepower on the Corvette (depending on the year of manufacture) and could be measured as high as 325 horses in the F-body models.

What engine size is a LS1?

Its LS1 ( 5.7 liters, 346ci) was the engine that sparked the entire. It was given its Gen III designation and introduced in 1997’s Corvette and the Firebird/Camaro models in 1998.

It was a significant contrast to the prior LT1 (Gen II) engine and featured features like an aluminum block with a deep skirt and close-to-plug ignition.

How much HP can a LS1 handle?

Even in emissions-legal trim, an LS1 that is blown will generate more than 500 horsepower on the wheel and 800 wheel horsepower for serious stroker efforts.

With turbo motors, there is no limit, as 1,000 horsepower is not uncommon, with the capability to modify the power output simply by turning a transparent boost knob.

Why are LS1 so good?

The LS engine has become known for its ability to be modified and easily altered.

For example, a new intake or exhaust system can provide a decent number of horses to your engine’s output.

A head/cam swapping alone can add 100 horsepower to the configuration.

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