1999 CHEVROLET Camaro LT1/LS1 (F-body (GM's F-body platform))

F-body (GM's F-body platform) / 2-door coupe / convertible / North America / select global markets

LT1LS1Exact year/trim recordGold

Engine identity

Engine code

LT1, LS1

Engine summary

1999 saw the last year of the Gen III 5.7L V8 LT1 and the introduction of the Gen IV 5.7L V8 LS1 in Z28 and SS trims. The LT1 (LLT coded in 99) was used in base Z28 and Camaro SS convertibles, while LS1 was in SS coupe models.

Displacement

5.7 L (346 cu in) V8

Power

305–320 hp depending on engine and market

Torque

335–345 lb-ft depending on engine and market

Fuel system

Sequential multi-port fuel injection (LT1 and LS1)

Timing drive

Overhead camshaft with overhead valves (pushrod) and hydraulic lifters

OBD port

Verify by VIN and market

Oils and fluids

Oil type

SAE 5W-30 engine oil meeting API service SN or later as per GM recommendations

Oil capacity

Approximately 6.0 quarts (service-fill including filter)

Coolant

Approximately 14 quarts depending on radiator and engine variant

Fluid

DEXRON-III automatic transmission fluid (ATF) or specified manual transmission fluid

Differential fluid

75W-90 synthetic gear oil typically recommended

Brake fluid

DOT 3 or DOT 4 brake fluid as per GM service literature

Service and parts data

Manual transmission

6-speed Tremec T56 available on SS coupe models

Automatic transmission

4-speed 4L60-E automatic available across trims

Spark plugs

AC Delco R45TS or equivalent, platinum tipped

Service interval

Oil change every 7,500 miles or 12 months, other intervals per GM maintenance schedule

Tire sizes

P245/50ZR16, P275/40ZR17 on SS

Wheel torque

Verify by VIN and market

Common and chronic problems

Intake manifold gasket leaks on LT1
Throttle body sensor issues
Older rubber suspension bushings wear

First checks

Inspect cooling system hoses and radiator for leaks
Check transmission fluid level and condition
Verify ignition coil function and spark plugs

Before replacing parts

Save fault codes and freeze-frame data before clearing anything.
Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.

Important notes

1999 was a transitional year for Camaro with two different V8 engines sharing the lineup depending on trim and production date.
Market was primarily North America, with some export markets receiving similar configurations under similar designations.

Common codes

Source and verification notes

GM technical service manuals for 1999 Camaro
Independent road tests and service reviews from automotive publications in 1999

Compatible tools

Verify by VIN and market

FAQ

What engine code does the 1999 CHEVROLET Camaro LT1/LS1 (F-body (GM's F-body platform)) use? 1999 CHEVROLET Camaro LT1/LS1 (F-body (GM's F-body platform)) is listed here with engine code LT1, LS1; engine summary: 1999 saw the last year of the Gen III 5.7L V8 LT1 and the introduction of the Gen IV 5.7L V8 LS1 in Z28 and SS trims. The LT1 (LLT coded in 99) was used in base Z28 and Camaro SS convertibles, while LS1 was in SS coupe models..
What oil and capacity does the 1999 CHEVROLET Camaro LT1/LS1 (F-body (GM's F-body platform)) use? 1999 CHEVROLET Camaro LT1/LS1 (F-body (GM's F-body platform)) is listed with SAE 5W-30 engine oil meeting API service SN or later as per GM recommendations and oil capacity Approximately 6.0 quarts (service-fill including filter). Confirm market and engine option before service.
What are common 1999 CHEVROLET Camaro LT1/LS1 (F-body (GM's F-body platform)) problems? Highlighted checks for 1999 CHEVROLET Camaro LT1/LS1 (F-body (GM's F-body platform)): Intake manifold gasket leaks on LT1, Throttle body sensor issues, Older rubber suspension bushings wear.

Engine identity

Engine code

LT1, LS1

Engine summary

Displacement

5.7 L (346 cu in) V8

Power

305–320 hp depending on engine and market

Torque

335–345 lb-ft depending on engine and market

Fuel system

Sequential multi-port fuel injection (LT1 and LS1)

Timing drive

Overhead camshaft with overhead valves (pushrod) and hydraulic lifters

OBD port

Verify by VIN and market

Oils and fluids

Oil type

SAE 5W-30 engine oil meeting API service SN or later as per GM recommendations

Oil capacity

Approximately 6.0 quarts (service-fill including filter)

Coolant

Approximately 14 quarts depending on radiator and engine variant

Fluid

DEXRON-III automatic transmission fluid (ATF) or specified manual transmission fluid

Differential fluid

75W-90 synthetic gear oil typically recommended

Brake fluid

DOT 3 or DOT 4 brake fluid as per GM service literature

Service and parts data

Manual transmission

6-speed Tremec T56 available on SS coupe models

Automatic transmission

4-speed 4L60-E automatic available across trims

Spark plugs

AC Delco R45TS or equivalent, platinum tipped

Service interval

Oil change every 7,500 miles or 12 months, other intervals per GM maintenance schedule

Tire sizes

P245/50ZR16, P275/40ZR17 on SS

Wheel torque

Verify by VIN and market

FAQ

What engine code does the 1999 CHEVROLET Camaro LT1/LS1 (F-body (GM's F-body platform)) use? 1999 CHEVROLET Camaro LT1/LS1 (F-body (GM's F-body platform)) is listed here with engine code LT1, LS1; engine summary: 1999 saw the last year of the Gen III 5.7L V8 LT1 and the introduction of the Gen IV 5.7L V8 LS1 in Z28 and SS trims. The LT1 (LLT coded in 99) was used in base Z28 and Camaro SS convertibles, while LS1 was in SS coupe models..

What oil and capacity does the 1999 CHEVROLET Camaro LT1/LS1 (F-body (GM's F-body platform)) use? 1999 CHEVROLET Camaro LT1/LS1 (F-body (GM's F-body platform)) is listed with SAE 5W-30 engine oil meeting API service SN or later as per GM recommendations and oil capacity Approximately 6.0 quarts (service-fill including filter). Confirm market and engine option before service.

What are common 1999 CHEVROLET Camaro LT1/LS1 (F-body (GM's F-body platform)) problems? Highlighted checks for 1999 CHEVROLET Camaro LT1/LS1 (F-body (GM's F-body platform)): Intake manifold gasket leaks on LT1, Throttle body sensor issues, Older rubber suspension bushings wear.

1999 CHEVROLET Camaro LT1/LS1 (F-body (GM's F-body platform))

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

First checks

Before replacing parts

Important notes

Scanning Engine...

1999 CHEVROLET Camaro LT1/LS1 (F-body (GM's F-body platform))

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

First checks

Before replacing parts

Important notes