Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
![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)
Vehicle Info NeededMELLINGPART NUMBER: 689-46656-16
46656-16 Dual Valve Spring Set for GM Gen III/IV LS Engines [1.276 in. O.D.]
$15999
Ships on Nov 03, 2026
Lowest Price GuaranteeSprings by Application
- 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
Valve Springs for Performance Camshafts
Melling Performance Valve Springs are available for engines with performance cams from mild street to all-out-race. Get the most out of your camshaft with the correct valve springs.
Part TypeValve Spring
Product LineMelling Performance Valve Springs
BrandMELLING
Part CategoryPerformance Parts
Coil Bind Height1.102 in.
Inside Diameter0.67 in.
Installed Pressure147 psi
Spring TypeDual Spring
Outside Diameter1.26 in.
Installed Height1.8 in.
Open Pressure406 psi
Spring Open Height1.23 in.
Grade TypePerformance
Vendor Part Number46656-16
Package Qty1
Package TypeEA
Items You Need
MELLING
22310 Class III Hydraulic Roller Camshaft for GM Gen III/IV LS Engines w/o AFM
Part Number : 689-22310
$31399
MELLING
475294 Titanium Valve Spring Retainer for GM Gen III/IV LS Engines w/Dual Valve Springs
Part Number : 689-475294
$4699
JEGS
Timing Chain Set for 2003-2007 GM Gen III LS 4.8L, 5.3L, Engines
Part Number : 555-20470
$4599$50.99
You Save$5.00
![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
$18999
JEGS
LS Oil Pump Priming Socket for 1999-2015 GM LS Engines
Part Number : 555-23520
$6699$73.99
You Save$7.00
![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
$24699$271.99
You Save$25.00
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80518.jpg)
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80521.jpg)
![W89409 Valve Spring Compressor [C-Style]](https://www.jegs.com/images/mini_200/500/555/555-w89409.jpg)
![Engine Assembly Lube [4 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28000.jpg)
JEGS
Premium 10-Blade Feeler Gauge Kit 0.015 in. to 0.035 in. (0.381mm to 0.889mm)
Part Number : 555-80502
$1777$20.99
You Save$3.22
JEGS
Valve Seal Installation Tool Works with 0.500" & 0.531" PC valve stem seals
Part Number : 555-80596
$3699$43.99
You Save$7.00
![Precision Cam Degree Wheel Kit [11 in.]](https://www.jegs.com/images/mini_200/500/555/555-81621.jpg)
JEGS
Cam Bearing Tool Set for Installation & Removal of Camshaft Bearings
Part Number : 555-80597
$17699$212.99
You Save$36.00
MELLING
Part Number : 689-22310
$31399
MELLING
Part Number : 689-475294
$4699
JEGS
Part Number : 555-20470
$4599$50.99
You Save$5.00
MELLING
Part Number : 689-48560T-9
$18999
Some parts are not legal for use in California or other states with similar laws / regulations
