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COMP Cams 12-420-8 Magnum 215/215 Hydraulic Roller Cam for Chevrolet Small Block
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Mild street performance, slightly noticeable lope at idle. Stock converter, aftermarket intake and headers. 3.40 to 4.10 rear gears.
- For Retro-Fit (Link Bar) Hydraulic Roller Lifters Fits '58-'021 262-400 cid Chevy Small Blocks 2
- Mild street performance - Slightly noticeable lope at idle - Works with stock converter
- Needs aftermarket intake, headers, 3.40 to 4.10 rear gears
- Requires thrust button and wear plate and suitable timing cover with thrust button and built-in wear plate
- High pressure / high volume fuel pumps require bronze tip fuel pump pushrods - OEM valve springs cannot be used
- Warning: Camshaft Optimized for use with a Melanized or Nitrided distributor gear. Not compatible with cast or steel gears without similar surface treatments. Failure to utilize the proper distributor gear will void all warranties and/or return policies.
1: Cams for '55-'57 engines can be custom ordered. 2: The '87+ Chevy Small Block received provisions for roller lifters. Most '87 - '93 GM cars came with roller lifters, but most '87 - '95 trucks came with flat tappet lifters in roller lifter style blocks. If your block has '87+ OEM-style roller cam provisions but does not have roller components fitted, COMP Hyd. Roller Lifter Install Kit for '87-'90 Blocks or '91-'02 Blocks can be purchased. As well as a '87+ OE-Style COMP Hyd. Roller Cam and '87+ OE-Style COMP Roller Lifters . Pre-'87 blocks require Retro-Fit Link Bar Roller Lifters.
Specifications
| Intake Duration at .050 Inch Lift | 215 DD |
| Exhaust Duration at .050 inch Lift | 215 DD |
| Advertised Intake Duration | 270 DD |
| Advertised Exhaust Duration | 270 DD |
| Lobe Separation | 110 DD |
| Intake Valve Lift | 0.5 IN |
| Exhaust Valve Lift | 0.5 IN |
| Basic Operating RPM Range | 1,800-5,000 R3 |
| Grind Number | 270HR |
| Cam Type | Hydraulic Roller |
| Usage | Street/Strip |
| Camshaft Series | Magnum |
| Lifters Included | No |
| K-Kit Upgrade | K12-420-8 |
| Lifter Type | Hydraulic Roller |
| SK-Kit Upgrade | SK12-420-8 |
| Valve Springs Required | Yes |
| Assembly Lubricant Included | No |
| Camshaft Gear Attachment | 3-Bolt |
| Camshaft Material | Austempered Ductile Iron |
| Engine Family | Chevrolet 262-400 c.i. 8 Cylinder (1958-1998) |
| Cam and Lifter Kit Upgrade | CL12-420-8 |
| Grind Number | 270HR |
⚠️ California Proposition 65 Warning
California Residents: This product can expose you to chemicals which are known to the State of California to cause cancer or other reproductive harm. Please visit www.p65warnings.ca.gov for more information.
Warranty: 12 Months
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