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Comp Cams Part Number 11-670-4 is a Nostalgia Plus 229/236 hydraulic flat tappet camshaft designed for Chevrolet Big Block 396–454 engines (1967–1996). Built to deliver vintage muscle-car character with modern performance, this camshaft offers a broad RPM range, responsive midrange power, and a classic performance idle. Well-suited for street/ performance applications seeking a traditional sound with strong drivability.
Nostalgia Plus series hydraulic flat tappet camshaft
Delivers classic muscle-car idle and tone
Strong midrange and upper RPM performance
Ideal for street/ performance big block builds
3-bolt camshaft gear attachment
Compatible with 396–454 Chevrolet big block engines
| Specification | Value |
|---|---|
| Camshaft Type | Hydraulic Flat Tappet |
| Series | Nostalgia Plus |
| Engine Family | Chevrolet 396–454 c.i. (1967–1996) |
| RPM Range | 1,800–6,200 |
| Advertised Duration (Int/Exh) | 276 / 283 |
| Duration @ .050" (Int/Exh) | 229 / 236 |
| Valve Lift (Int/Exh) | 0.530 / 0.524 |
| Lobe Lift (Int/Exh) | 0.312 / 0.308 |
| Lobe Separation Angle | 112° |
| Intake Centerline | 108° |
| Intake Open (BTDC) | 28° |
| Intake Close (ABDC) | 68° |
| Exhaust Open (BBDC) | 75° |
| Exhaust Close (ATDC) | 28° |
| Valve Timing @ .006" | Not specified |
| Gear Attachment | 3-Bolt |
| Usage | Street/Performance |
| Lifter Type | Hydraulic Flat Tappet |
| Warranty | 12 Months |
| UPC | 036584070283 |
| Emissions Code | Not specified |
| Make | Chevrolet |
| California Proposition 65 | Cancer and Reproductive Harm (P65Warnings.ca.gov) |
Make: Chevrolet
Engine Family: 396 / 402 / 427 / 454 c.i. Big Block V8
Model Years: 1967–1996
Cam Gear Style: 3-bolt
