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Comp Cams Part Number 12-268-4 is an Xtreme Energy Computer Controlled 224/230 hydraulic flat tappet camshaft designed for Chevrolet Small Block 262–400 engines (1958–1998). This profile is ideal for 1987–1998 TPI-equipped 350 engines with upgrades including an enhanced chip, larger injectors, high-flow plenum and runners, and improved exhaust systems. Delivers responsive street/performance power with an operating range of 1,800–5,800 RPM.
Xtreme Energy Computer Controlled series
Hydraulic flat tappet design for EFI or carbureted builds
Excellent for modified 350 TPI engines with supporting mods
Enhanced midrange torque and throttle response
3-bolt camshaft gear attachment
Ideal for street/performance applications
| Specification | Value |
|---|---|
| Camshaft Type | Hydraulic Flat Tappet |
| Series | Xtreme Energy Computer Controlled |
| Engine Family | Chevrolet 262–400 c.i. (1958–1998) |
| RPM Range | 1,800–5,800 |
| Advertised Duration (Int/Exh) | 268 / 280 |
| Duration @ .050" (Int/Exh) | 224 / 230 |
| Valve Lift (Int/Exh) | 0.479 / 0.480 |
| Lobe Lift (Int/Exh) | 0.318 / 0.320 |
| Lobe Separation Angle | 114° |
| Intake Centerline | 110° |
| Intake Open (BTDC) | 22° |
| Intake Close (ABDC) | 65° |
| Exhaust Open (BBDC) | 76° |
| Exhaust Close (ATDC) | 23° |
| Valve Timing @ .006" | Not specified |
| Gear Attachment | 3-Bolt |
| Usage | Street/Performance |
| Lifter Type | Hydraulic Flat Tappet |
| Warranty | 12 Months |
| UPC | 036584063292 |
| Emissions Code | Not specified |
| California Proposition 65 | Cancer and Reproductive Harm (P65Warnings.ca.gov) |
Make: Chevrolet
Engine Family: 262–400 c.i. Small Block, including 1987–1998 TPI applications
Model Years: 1958–1998
Cam Gear Style: 3-bolt
