ChevroletSilverado 15001999 · First generation

1999 Chevrolet Silverado 1500 Engine

4300 Vortec 4300-vortec
Engines: L35 l35
Engine 2: LM7 lm7
Engine 3: LR4 lr4
Engine 4

Lowest stored HP200 hp — 10 configurations tie for lowest
Highest stored HP270 hp — 4 configurations tie for highest
Lowest stored torque260 lb-ft — 10 configurations tie for lowest
Highest stored torque315 lb-ft — 4 configurations tie for highest

Catalog dataManufacturer figures stored on configuration rows

Engine / configuration

4300 Vortec · 4300-vortec

Catalog engines

Engine	Code
4300 Vortec	4300-vortec
L35	l35
LM7	lm7
LR4	lr4

Configurations

Configuration	HP	Torque
LT 4x2 Extended Cab 6.5 ft. box	270 hp	315 lb-ft
LT 4x2 Extended Cab 8 ft. box	270 hp	315 lb-ft
LT 4x4 Extended Cab 6.5 ft. box	270 hp	315 lb-ft
LT 4x4 Extended Cab 8 ft. box	270 hp	315 lb-ft
Base 4x2 Extended Cab 6.5 ft. box	200 hp	260 lb-ft
Base 4x2 Extended Cab 8 ft. box	255 hp	285 lb-ft
Base 4x2 Standard Cab 6.5 ft. box	200 hp	260 lb-ft
Base 4x2 Standard Cab 8 ft. box	200 hp	260 lb-ft
Base 4x4 Extended Cab 6.5 ft. box	255 hp	285 lb-ft
Base 4x4 Extended Cab 8 ft. box	255 hp	285 lb-ft
Base 4x4 Standard Cab 6.5 ft. box	200 hp	260 lb-ft
Base 4x4 Standard Cab 8 ft. box	200 hp	260 lb-ft
LS 4x2 Extended Cab 6.5 ft. box	200 hp	260 lb-ft
LS 4x2 Extended Cab 8 ft. box	255 hp	285 lb-ft
LS 4x2 Standard Cab 6.5 ft. box	200 hp	260 lb-ft
LS 4x2 Standard Cab 8 ft. box	200 hp	260 lb-ft
LS 4x4 Extended Cab 6.5 ft. box	255 hp	285 lb-ft
LS 4x4 Extended Cab 8 ft. box	255 hp	285 lb-ft
LS 4x4 Standard Cab 6.5 ft. box	200 hp	260 lb-ft
LS 4x4 Standard Cab 8 ft. box	200 hp	260 lb-ft

Compare two configurations

Catalog spark plugs

Catalog year/make/model rows for 1999 Chevrolet Silverado 1500.

Accel

HP Copper Spark Plug - 14mm Thread - .708 in Reach - Tapered Seat - 4 Pack, 0526-4

MPN: 0526-4

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Accel

Spark Plug Wire Set - Extreme 9000 Black Ceramic Boot - Chevy/GMC Truck 4.3L V6 - This custom fit black ceramic boot spark plug wire set fits.

MPN: 9044CK

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ACDelco

Conventional Spark Plug, R44LTS6

MPN: R44LTS6

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ACDelco

Iridium Spark Plug, 41-101

MPN: 41-101

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Catalog engine codes and configuration engine labels do not always match. Both are shown as stored — neither is rewritten.

Catalog fitment does not by itself prove OEM-equivalent compatibility.