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COMP Cams 12-432-8

COMP Cams Comp Cams Xtreme Energy Hydraulic Roller Camshafts

249-12-432-8

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$344.99
COMP Cams Comp Cams Xtreme Energy Hydraulic Roller Camshafts $344.99
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Xtreme Energy XR282HR Retro-Fit Hydraulic Roller Camshaft
Lift: .510''/.520''
Duration: 282°/288°
Lobe Separation Angle: 110°
RPM Range: 2200-5800

COMP Cams 12-432-8 Details

Chevy 262-400ci Small Block 1955-98
For engines NOT originally equipped with a hydraulic roller camshaft.

*Note: In order to use these camshafts in 1955-57 265ci blocks, it is necessary to machine a small groove in the rear main journal of the cam to allow oil flow to the top of the engine.

**Note: Requires thrust button & wear plate.

Great for street machines, needs intake, headers, 2500 stall converter and gears.

Operating Range:2200-5800 RPM
Duration Advertised:282° Intake / 288° Exhaust
Duration @ .050'' Lift:230° Intake / 236° Exhaust
Valve Lift w/1.5 Rockers:.510'' Intake / .520'' Exhaust
Lobe Separation Angle:110°

Specifications:

Intake Valve Lift (in.)
0.510
Exhaust Valve Lift (in.)
0.52
RPM Range
2200-5800
Int. Duration @ .050 in. (Deg)
230
Exh. Duration @ .050 in. (Deg)
236
Int. Duration Advertised (Deg)
282
Exh. Duration Advertised (Deg)
288
Engine Make/Size
Chevy Small Block (262-400)
Lifter Type
Hydraulic Roller
Usage
Street/Performance
Advertised Duration
282 int./288 exh.
Advertised Exhaust Duration
288
Advertised Intake Duration
282
Basic Operating RPM Range
2,200-5,800
Cam Style
Hydraulic roller tappet
Computer-Controlled Compatible
No
Duration at 050 inch Lift
230 int./236 exh.
Exhaust Duration at 050 inch Lift
236
Exhaust Valve Lift with Factory Rocker Arm Ratio (
0.52
Grind Number
CS XR282HR-10
Intake Duration at 050 inch Lift
230
Intake Valve Lift with Factory Rocker Arm Ratio (i
0.51
Quantity
Sold individually
Valve Lift with Factory Rocker Arm Ratio
0.510 int./0.520 exh.
Valve Springs Required
Yes
Lobe Separation (Deg)
110
Manufacturer's Part Number:
12-432-8

The Leading Edge of Valve Train Technology

Comp Cams Xtreme Energy series can be used in any street or street/strip application where both throttle response and top-end horsepower is desired. These camshafts are designed to take advantage of the latest improvements in valve train components and the newest developments in camshaft design. Their aggressive lobe design produces better throttle response and top end horsepower than other cams with the same duration @ .050'' lift, while delivering increased engine vacuum. We do not recommend the use of stock valve train components with these camshafts due to the aggressive lobe designs.

Features:
  • Quicker opening lobe profiles deliver increased responsiveness & more area under the lift curve
  • More vacuum allows an increase in duration for improved performance and assists power brakes
  • Excellent performance in street carbureted applications
  • Best performance with aftermarket intake manifolds, headers, lower gear ratios

    Camshaft & Lifter Kits are indicated by a CL in their part number and include Camshaft, Lifters, Assembly Lube, Decals, and Instructions.

    Complete Kits are indicated by a K in their part number and include Camshaft, Lifters, Timing Chain & Gears, Valve Springs, Retainers, Locks, Assembly Lube, Decals, and Instructions.

    Small Kits are indicated by a SK in their part number and include Camshaft, Lifters, Timing Chain Set, Assembly Lube, Decals, and Instructions.

  • Thank you for your answer. Second part of my above question. I may choose to stick with the TH350. In that case, how would 3.73 gears and 28 inch tires work? I want some highway drivability. Should I bump up the stall? street strip car minimal highway use

    Asked by: PRNDL
    It is recommended to use a 2500+ stall torque converter with this camshaft.
    Answered by: Rusty B
    Date published: 2018-08-28

    Can someone please advise the proper rear end gears and stall for this cam? 383 stroker. All forged and balanced. 10.5 conpression with AFR 195 heads. 700r4 or TH350. 3,300 lbs Nova. I was thinking 2800-3200 stall with 4.10 gears. 28 inch tires.

    Asked by: PRNDL
    You are correct in , your setup will be perfect for this camshaft.
    Answered by: Rusty B
    Date published: 2018-08-24
    • y_2018, m_11, d_13, h_15CST
    • bvseo_bulk, prod_bvqa, vn_bulk_2.0.8
    • cp_1, bvpage1
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