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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-12-353-4
COMP Cams Specialty CS 312AH-8 Hydraulic Flat Camshaft Lift .540"/.540" Duration 312/320 Lobe Angle 108°
$18299
Ships on 09/16/2026
Lowest Price GuaranteeChevy Small Block
- COMP Cams Specialty CS 312AH-8 Hydraulic Flat Camshaft
- Specialty Camshaft
- 1 Year Limited Warranty
SBC; Chevrolet; Chevy Small Block; Small Block Chevrolet; 265; 283; 307; 302; 327; 350; 305; 262; 400; 383; 427; 406; 355; 267; L46; L48; L65; LM1; ZQ3; LT1; L82; L81; LS9; LT-9; L83; L98; L05; L31; LG3; LG4; LU5; L69; LE9; LB9; L03; L30; Chevelle; Camaro; Swap; Corvette; Bel Air; Z28; Z2/8; Duntov; Nova; Monaro; Firebird; Trans-Am; Pontac; C10; C20; K10; Blazer; S10; Monza; Ventura; Monte Carlo; Malibu; El Camino; Caprice; Vortec; SS
Lift .540"/.540"
Duration 312/320
Lobe Angle 108°
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Part TypeCamshaft
BrandCOMP CAMS
Package Height2.9
Package Width2.9
Package Length24.2
Weight8.7 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)260
Cam StyleHydraulic flat tappet
Grind NumberCS 312AH-8
Exh. Duration Advertised (Deg)312-5
Engine Make/SizeChevy Small Block (262-400)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.54
Int. Duration @ .050 In. (Deg)260
Intake Valve Lift0.54 in (13.716 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)312-5
Lobe Separation (Deg)108
Rpm Range3000-7000
Advertised Duration312 int./320 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.54
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.540 int./0.540 exh.
QuantitySold individually
Exhaust Valve Lift0.54 in (13.716 mm)
Advertised Intake Duration312
Intake Duration At 050 Inch Lift260
Exhaust Duration At 050 Inch Lift268
Advertised Exhaust Duration320
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift260 int./268 exh.
Valve Springs RequiredYes
Vendor Part Number12-353-4
Package Qty1
Package TypeEA
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