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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-07-500-8
Comp Cams Xtreme Energy Hydraulic Roller Camshafts
$56299
Ships on 09/10/2026
Lowest Price GuaranteeChevy 350ci LT1 & LT4 1993-97
- Xtreme Energy 258HR-12 Hydraulic Roller Camshaft
- Produces Better Throttle Response
- Produces Top Engine Horsepower
- Delivers Increased Engine Vacuum
- 1 Year Limited Warranty
SBC; Chevrolet; Chevy Small Block; Small Block Chevrolet; 305; 350; LT1; LT4; 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
Good in factory LT1, increased power and economy over stock.
Lift: .480"/.488"
Duration: 258/264
Lobe Separation Angle: 112°
RPM Range: 1000-5000
Part TypeCamshaft
BrandCOMP CAMS
Package Height2.8
Package Width3.0
Package Length24.3
Weight8.8 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)212
Cam StyleHydraulic roller tappet
Grind NumberLT1 XR258HR-12
Exh. Duration Advertised (Deg)264
Engine Make/SizeChevy LT1
Intake Valve Lift With Factory Rocker Arm Ratio (I0.48
Int. Duration @ .050 In. (Deg)206
Basic Operating Rpm Range1,000-5,000
Intake Valve Lift0.48 in (12.192 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)258
Lobe Separation (Deg)112
Rpm Range1000-5000
Advertised Duration258 int./264 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.488
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.480 int./0.488 exh.
QuantitySold individually
Exhaust Valve Lift0.488 in (12.395 mm)
Advertised Intake Duration258
Intake Duration At 050 Inch Lift206
Exhaust Duration At 050 Inch Lift212
Advertised Exhaust Duration264
Lifter TypeHydraulic Roller
Duration At 050 Inch Lift206 int./212 exh.
Valve Springs RequiredYes
Vendor Part Number07-500-8
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
