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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-12-688-47
Comp Cams Oval Track Camshafts
$32695
Ships on Oct 28, 2026
Lowest Price GuaranteeCurrently Unavailable
This product is currently not available. Please call customer service for assistance at 1-800-345-4545.
Small Block Chevrolet 262-400ci 1955-1998Mechanical Flat Tappet (4 & 7 Swap Firing Order)
- Oval Track Mechanical Flat Tappet Camshaft
Chevrolet 262-400ci 1955-1998
4 & 7 Swap
Lift: .531"/.525"
Duration: 278°/284°
Lobe Separation Angle: 106°
RPM Range: 3000-6800
1/4-3/8 Tight. 327-358 cid. 11:1+. 2bbl with good intake & exhaust.
265, 283, 307, 302, 305, 327, 350, 383, 400, 427, L46, L48, L65, LM1, LT-1, L82, L81, LS9, L83, L98, L05, LG3, LG4, LT1, LT4, Camaro, Corvette, Chevelle, Stingray, Silverado, C10, Firebird, Chevrolet, Chevy, Small Block Chevy, Caprice, Malibu, Impala, Nova, 355, GEN1, Monte Carlo, S10
1/4-3/8 tight. 327-358c.i. 11:1+ compression. 2 BBL with good intake and exhaust.
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.
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Part TypeCamshaft
BrandCOMP CAMS
Package Height2.75
Package Width3.0
Package Length24.5
Weight8.5 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)250
Cam StyleMechanical flat tappet
Grind Number47S278XOS
Exh. Duration Advertised (Deg)284
Engine Make/SizeChevy Small Block (262-400)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.531
Int. Duration @ .050 In. (Deg)248
Basic Operating Rpm Range3,000-6,800
Intake Valve Lash0.016 in (0.406 mm)
Intake Valve Lift0.531 in (13.487 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)278
Lobe Separation (Deg)106
Rpm Range3000-6800
Advertised Duration278 int./284 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.525
UsageStrip
Valve Lift With Factory Rocker Arm Ratio0.531 int./0.525 exh.
Camshaft Gear Attachment3-bolt
QuantitySold individually
Exhaust Valve Lash0.018 in (0.457 mm)
Exhaust Valve Lift0.525 in (13.335 mm)
Advertised Intake Duration278
Intake Duration At 050 Inch Lift248
Exhaust Duration At 050 Inch Lift250
Advertised Exhaust Duration284
Lifter TypeMechanical Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift248 int./250 exh.
Valve Springs RequiredYes
Vendor Part Number12-688-47
Package Qty1
Package TypeEA
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