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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-12-646-5
Comp Cams Oval Track Camshafts
$34195
Ships on Sep 04, 2026
Lowest Price GuaranteeSmall Block Chevrolet 262-400ci 1955-1998Mechanical Flat Tappet - (Xtreme Oval)
- Oval Track Mechanical Flat Tappet Camshaft
Chevrolet 262-400ci 1955-1998
Lift: .501"/.510"
Duration: 266°/276°
Lobe Separation Angle: 108°
RPM Range: 2200-6000
Xtreme Oval Solids - These camshafts use COMP's new XTQ intake profiles with the XTX exhaust profiles for more area under the curve than most good .875" lifter designs, while still allowing standard .842" lifters.Solid-1/4-3/8 Tight track. 327-358 cid. 9:1. 2bbl with iron 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 track. 327-358c.i., 9:1 compression. 2 BBL with iron 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 Width6.5
Package Length12.0
Weight8.9 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)242
Cam StyleMechanical flat tappet
Grind NumberCS 266XOS-8
Exh. Duration Advertised (Deg)276
Engine Make/SizeChevy Small Block (262-400)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.501
Int. Duration @ .050 In. (Deg)236
Basic Operating Rpm Range2,200-6,000
Intake Valve Lash0.016 in (0.406 mm)
Intake Valve Lift0.501 in (12.725 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)266
Lobe Separation (Deg)108
Rpm Range2200-6000
Advertised Duration266 int./276 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.51
UsageStrip
Valve Lift With Factory Rocker Arm Ratio0.501 int./0.510 exh.
QuantitySold individually
Exhaust Valve Lash0.018 in (0.457 mm)
Exhaust Valve Lift0.51 in (12.954 mm)
Advertised Intake Duration266
Intake Duration At 050 Inch Lift236
Exhaust Duration At 050 Inch Lift242
Advertised Exhaust Duration276
Lifter TypeMechanical Roller
Part FitmentSemi Universal
Duration At 050 Inch Lift236 int./242 exh.
Valve Springs RequiredYes
Vendor Part Number12-646-5
Package Qty1
Package TypeEA
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