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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-11-749-14
Drag Race Mechanical Roller Camshaft 4/7 Swap Firing Order Lift .748"/.714" Duration 313/322 RPM Range 4600-7400
$60395
Ships on 09/15/2026
Lowest Price GuaranteeChevy 396-454ci Big Block 1965-96 4&7 Swap Firing Order
- Drag Race Mechanical Roller Camshaft
4/7 Swap Firing Order
Lift .748"/.714"
Duration 313/322
RPM Range 4600-7400
span class="text">*Note:Has a 4 and 7 firing order swap.
**Note: Requires upgraded gear, thrust button & wear plate.
396-454ci, 4500+ stall converter, 11:1 compression, good heads, small nitrous.
| Operating Range: | 4600-7400 RPM |
| Duration Advertised: | 313° Intake / 322° Exhaust |
| Duration @ .050' Lift: | 276° Intake / 284° Exhaust |
| Valve Lift w/Factory Rockers: | .748' Intake / .714' Exhaust |
| Valve Setting: | .028' Intake / .030' Exhaust |
| Lobe Separation Angle: | 110° |
Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572
Good Super Gas, 11:1+ compression, 4500+ stall, 427-468c.i.
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 Height2.8
Package Width2.9
Package Length24.3
Weight10.5 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)284
Cam StyleMechanical roller tappet
Grind Number47S 313R10
Exh. Duration Advertised (Deg)322
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.748
Int. Duration @ .050 In. (Deg)276
Basic Operating Rpm Range4,600-7,500
Intake Valve Lash0.028 in (0.711 mm)
Intake Valve Lift0.748 in (18.999 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)313
Lobe Separation (Deg)110
Rpm Range4600-7400
Advertised Duration312 int./319 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.714
UsageStrip
Valve Lift With Factory Rocker Arm Ratio0.748 int./0.714 exh.
QuantitySold individually
Exhaust Valve Lash0.03 in (0.762 mm)
Exhaust Valve Lift0.714 in (18.136 mm)
Advertised Intake Duration312
Intake Duration At 050 Inch Lift276
Exhaust Duration At 050 Inch Lift284
Advertised Exhaust Duration319
Lifter TypeMechanical Roller
Part FitmentSemi Universal
Duration At 050 Inch Lift276 int./284 exh.
Valve Springs RequiredYes
Vendor Part Number11-749-14
Package Qty1
Package TypeEA
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