Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Vehicle Info NeededCOMP CAMSPART NUMBER: 249-76-801-9
Comp Cams Xtreme Energy Hydraulic Roller Camshafts
$55895
Ships on 09/09/2026
Lowest Price GuaranteeGMC 3800/3.8 6 Cyl- 1996-Present
- Xtreme Energy 255HR-12 Hydraulic Roller Camshaft
- Produces Better Throttle Response
- Produces Top Engine Horsepower
- Delivers Increased Engine Vacuum
- 1 Year Limited Warranty
3800; GM 3800; 3.8; Buick; Chevrolet 3800; Impala; Malibu; Pontiac
Naturally aspirated performance cam. Best with intake improvements. Must replace valve springs.
Lift: .517"/.498"
Duration: 255/262
Lobe Separation Angle: 112°
RPM Range: 1000-5500
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 Height2.8
Package Width3.2
Package Length24.2
Weight6.0 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)205
Cam StyleHydraulic roller follower
Grind NumberGM38 255HR12
Exh. Duration Advertised (Deg)262
Engine Make/SizeBuick 231-252
Intake Valve Lift With Factory Rocker Arm Ratio (I0.517
Int. Duration @ .050 In. (Deg)201
Basic Operating Rpm Range1,000-5,500
Intake Valve Lift0.496 in (12.598 mm)
Computer-Controlled CompatibleYes
Int. Duration Advertised (Deg)255
Lobe Separation (Deg)112
Rpm Range1000-5500
Advertised Duration255 int./262 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.498
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.517 int./0.498 exh.
QuantitySold individually
Exhaust Valve Lift0.48 in (12.192 mm)
Advertised Intake Duration255
Intake Duration At 050 Inch Lift201
Exhaust Duration At 050 Inch Lift205
Advertised Exhaust Duration262
Lifter TypeHydraulic Roller
Duration At 050 Inch Lift201 int./205 exh.
Valve Springs RequiredYes
Vendor Part Number76-801-9
Package Qty1
Package TypeEA
No Questions
No Reviews
Items You Need
![Engine Assembly Lube [4 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28000.jpg)
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80521.jpg)
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80518.jpg)
![Precision Cam Degree Wheel Kit [11 in.]](https://www.jegs.com/images/mini_200/500/555/555-81621.jpg)
![Break-In/Engine Oil Supplement [12 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28060.jpg)
![159 Engine Break-In Oil Additive [12-Ounce]](https://www.jegs.com/images/mini_200/200/249/249-159.jpg)
JEGS
Universal Camshaft Installation/Removal Tool Includes 4 camshaft adapters
Part Number : 555-80599
$4779$51.99
You Save$4.20
Some parts are not legal for use in California or other states with similar laws / regulations
