Головка блока цилиндров
LS1 / LS6 / LM7 / L59 / LQ4 / LQ9 / LS2 / LS3 / LS7 / L76 / L92 / L99
| Смещение | Топливо | Цилиндр | Долина | Распределительный вал | Год |
| 4.8L / 5.3L / 5.7L / 6.0L / 6.2L |
Gasolione
|
4 | 8 | 1 |
| ML № | OEM-НОМЕР | НОМЕР ССЫЛКИ |
| MLG081A | ||
| MLG081B | ||
| MLG081C | ||
| MLG081D | ||
| MLG081E | ||
| MLG081F |
The General Motors LS-Series V8 engine is a family of modern small-block V8s used in a wide range of Chevrolet, GMC, Cadillac, and Pontiac vehicles from 1997 to present. These engines are known for their compact design, high power-to-weight ratio, and modular cylinder head architecture.
LS engines use either cathedral-port (Gen III) или rectangular/oval-port (Gen IV) aluminum cylinder heads, with some early iron heads used on truck applications.
| Особенность | Спецификация |
|---|---|
| Материал головки блока цилиндров | Aluminum (most) / Cast Iron (truck models) |
| Клапанный механизм | OHV (Overhead Valve), Pushrod |
| Конфигурация клапана | 16-Valve (2 valves per cylinder) |
| Combustion Chamber Size | ~61cc (Gen III) / 70–72cc (Gen IV, rectangular port) |
| Intake Port Shape | Cathedral or Rectangular (depends on engine family) |
| Exhaust Port Shape | D-Port or Oval |
| Rocker Arm Ratio | 1.7:1 (standard) |
| Топливная система | EFI / Multi-port injection |
| Код двигателя | Смещение | Обычные транспортные средства |
|---|---|---|
| LS1 | 5.7L V8 | Camaro, Corvette C5, Firebird (1997–2004) |
| LS6 | 5.7L HO V8 | Corvette Z06, CTS-V |
| LM7 / L59 | 5.3L V8 | Silverado, Tahoe, Suburban |
| LQ4 / LQ9 | 6.0L V8 | Silverado HD, Escalade, Express |
| LS2 | 6.0L V8 | Corvette C6, GTO, Trailblazer SS |
| LS3 | 6.2L V8 | Camaro SS, Corvette C6 (later) |
| LS7 | 7.0L V8 | Corvette Z06 (high-performance head) |
| L76 / L92 / L99 | 6.0–6.2L | Trucks, Performance sedans |
Note: Some truck heads (e.g., 799, 862, 706 castings) are interchangeable across engines, but combustion chamber and port volume vary.
| Casting # | Приложение | Примечания |
|---|---|---|
| 241 / 853 | LS1 (cathedral port) | Early aluminum heads |
| 243 / 799 | LS6, LS2, 5.3 HO | Best flow cathedral-port heads |
| 706 / 862 | 4.8L / 5.3L (truck) | Small chamber, cast iron or aluminum |
| 317 | LQ4/LQ9 6.0L truck | Large chamber, low compression |
| 823 | LS3, L92, L99 | Rectangular port, high flow Gen IV |
| 5364 | LS7 | CNC ported high-performance head |
| Тип | Подробности |
|---|---|
| Непокрытая голова | Head casting only (no valves) |
| Assembled Head | Includes valves, springs, retainers |
| Performance Head | CNC ported, upgraded valve springs/lifters |
All heads are pressure-tested, CNC-machined, and ready for high-performance or OEM use.
| Проблема | Причина | Решение |
|---|---|---|
| Трещина в голове | Перегрев или детонация | Replace with new casting |
| Износ направляющей клапана | High mileage or low oil | Ream or replace guides |
| Lifter tick / noise | Collapsed lifter or stuck pushrod | Replace lifters / check preload |
| Искривленная голова | Сильный перегрев | Перекрасить или заменить |
| Broken valve spring | High-RPM abuse or fatigue | Replace with upgraded springs |
Africa/Asia: Swap markets, racing builds, aftermarket upgrades
North America: USA, Canada – performance and truck rebuilds
Южная Америка: Brazil, Argentina – GM S10/Trailblazer with V8 swaps
Европа: Corvette, Holden HSV export models
Австралия: Commodore/HSV using LS1, LS2, LS3
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