![46656-16 Dual Valve Spring Set for GM Gen III/IV LS Engines [1.276 in. O.D.]](https://www.jegs.com/images/mini_750/600/689/689-46656-16.jpg)
46656-16 Dual Valve Spring Set for GM Gen III/IV LS Engines [1.276 in. O.D.]
- Performance Dual Valve Spring Set
- Installed Load/Height: 147 lbs. @ 1.800 in.
- Open Load/Height: 406 lbs. @ 1.230 in.
- O.D. 1.276 in.
- I.D. 0.678 in.
- Coil Bind: 1.100 in.
- Chrome Silicone
- Set of 16
These Melling 46656-16 Dual Valve Springs for performance GM Gen III/IV engines have an installed height of 147 lbs. @ 1.800 in. and will let the engine's camshaft perform as intended. Check with the camshaft manufacturer for required pressures and height.
Use with Melling 475294 titanium retainers (sold separately) or equivalent
Items You Need

MELLING
22310 Class III Hydraulic Roller Camshaft for GM Gen III/IV LS Engines w/o AFM
Part Number : 689-22310

MELLING
475294 Titanium Valve Spring Retainer for GM Gen III/IV LS Engines w/Dual Valve Springs
Part Number : 689-475294

JEGS
Timing Chain Set for 2003-2007 GM Gen III LS 4.8L, 5.3L, Engines
Part Number : 555-20470
![48560T-9 Premium Racing Timing Chain Set for Select 1997-2010 GM LS 4.8L, 5.3L, 5.7L, 6.0L, Billet Steel [Single Roller Chain]](https://www.jegs.com/images/mini_200/600/689/689-48560t-9.jpg)
MELLING
48560T-9 Premium Racing Timing Chain Set for Select 1997-2010 GM LS 4.8L, 5.3L, 5.7L, 6.0L, Billet Steel [Single Roller Chain]
Part Number : 689-48560T-9

JEGS
LS Oil Pump Priming Socket for 1999-2015 GM LS Engines
Part Number : 555-23520

JEGS
Premium 10-Blade Feeler Gauge Kit 0.015 in. to 0.035 in. (0.381mm to 0.889mm)
Part Number : 555-80502

JEGS
Valve Seal Installation Tool Works with 0.500" & 0.531" PC valve stem seals
Part Number : 555-80596

JEGS
Cam Bearing Tool Set for Installation & Removal of Camshaft Bearings
Part Number : 555-80597

JEGS
Valve Seal Installation Tool Works with 0.500" & 0.531" PC valve stem seals
Part Number : 555-80596
![Precision Cam Degree Wheel Kit [11 in.]](https://www.jegs.com/images/mini_200/500/555/555-81621.jpg)
JEGS
Precision Cam Degree Wheel Kit [11 in.]
Part Number : 555-81621

JEGS
Cam Bearing Tool Set for Installation & Removal of Camshaft Bearings
Part Number : 555-80597

JEGS
Top Dead Center Locator Made in the USA
Part Number : 555-80524

MELLING
22310 Class III Hydraulic Roller Camshaft for GM Gen III/IV LS Engines w/o AFM
Part Number : 689-22310

MELLING
475294 Titanium Valve Spring Retainer for GM Gen III/IV LS Engines w/Dual Valve Springs
Part Number : 689-475294

JEGS
Timing Chain Set for 2003-2007 GM Gen III LS 4.8L, 5.3L, Engines
Part Number : 555-20470
![48560T-9 Premium Racing Timing Chain Set for Select 1997-2010 GM LS 4.8L, 5.3L, 5.7L, 6.0L, Billet Steel [Single Roller Chain]](https://www.jegs.com/images/mini_200/600/689/689-48560t-9.jpg)
MELLING
48560T-9 Premium Racing Timing Chain Set for Select 1997-2010 GM LS 4.8L, 5.3L, 5.7L, 6.0L, Billet Steel [Single Roller Chain]
Part Number : 689-48560T-9

COMP CAMS
Keyway Adjustable Billet Timing Set GM LS Series
Part Number : 249-7102

JEGS
LS Oil Pump Priming Socket for 1999-2015 GM LS Engines
Part Number : 555-23520
![Pre-Lube Engine Oiler [2-Gallon Stainless Steel Tank]](https://www.jegs.com/images/mini_200/500/555/555-23550.jpg)
JEGS
Pre-Lube Engine Oiler [2-Gallon Stainless Steel Tank]
Part Number : 555-23550
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80518.jpg)
JEGS
Valve Spring Compressor [Stud Mount]
Part Number : 555-80518
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80521.jpg)
JEGS
Valve Spring Compressor [Stud Mount]
Part Number : 555-80521
![W89409 Valve Spring Compressor [C-Style]](https://www.jegs.com/images/mini_200/500/555/555-w89409.jpg)
JEGS
W89409 Valve Spring Compressor [C-Style]
Part Number : 555-W89409
![Engine Assembly Lube [4 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28000.jpg)
JEGS
Engine Assembly Lube [4 oz. Bottle]
Part Number : 555-28000

JEGS
Premium 10-Blade Feeler Gauge Kit 0.015 in. to 0.035 in. (0.381mm to 0.889mm)
Part Number : 555-80502

JEGS
Valve Spring Pressure Tester 0-600 psi
Part Number : 555-80538

JEGS
Valve Seal Installation Tool Works with 0.500" & 0.531" PC valve stem seals
Part Number : 555-80596
![Precision Cam Degree Wheel Kit [11 in.]](https://www.jegs.com/images/mini_200/500/555/555-81621.jpg)
JEGS
Precision Cam Degree Wheel Kit [11 in.]
Part Number : 555-81621

JEGS
Cam Bearing Tool Set for Installation & Removal of Camshaft Bearings
Part Number : 555-80597

JEGS
Top Dead Center Locator Made in the USA
Part Number : 555-80524

MELLING
22310 Class III Hydraulic Roller Camshaft for GM Gen III/IV LS Engines w/o AFM
Part Number : 689-22310

MELLING
475294 Titanium Valve Spring Retainer for GM Gen III/IV LS Engines w/Dual Valve Springs
Part Number : 689-475294

JEGS
Timing Chain Set for 2003-2007 GM Gen III LS 4.8L, 5.3L, Engines
Part Number : 555-20470
![48560T-9 Premium Racing Timing Chain Set for Select 1997-2010 GM LS 4.8L, 5.3L, 5.7L, 6.0L, Billet Steel [Single Roller Chain]](https://www.jegs.com/images/mini_200/600/689/689-48560t-9.jpg)
MELLING
48560T-9 Premium Racing Timing Chain Set for Select 1997-2010 GM LS 4.8L, 5.3L, 5.7L, 6.0L, Billet Steel [Single Roller Chain]
Part Number : 689-48560T-9
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Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools
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Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.
