Enter your Engine Family Number and we will confirm whether this exact converter is street-legal for your vehicle.
COMP Cams 12-855-9 Oval Track 253/257 Solid Roller Cam for Chevrolet Small Block
This part fits specific vehicles. Select your vehicle to check the fit. You can still add it to your cart.
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Enter your Engine Family Number and we will confirm whether this exact converter is street-legal for your vehicle.
1/4-3/8. 331-355 limited Late Model, 2 BBL and 390 4 BBL carbs.
SBC - 1955-57 models have an oiling groove in the rear journal. The listed part numbered cams will not fit these models, so if you require a Camshaft with the oiling groove, please call us at 1-800-999-0853 or contact us, and we will assist you with placing an order. 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.
Specifications
| Usage | Circle Track |
| Camshaft Series | Oval Track Xtreme TK |
| Exhaust Valve Lift | 0.645 IN |
| Lobe Separation | 106 deg |
| Intake Duration at .050 Inch Lift | 253 deg |
| Exhaust Duration at .050 inch Lift | 257 deg |
| Advertised Intake Duration | 281 deg |
| Grind Number | 281TKR-6 |
| Advertised Exhaust Duration | 285 deg |
| Camshaft Gear Attachment | 3 |
| Basic Operating RPM Range | 3,000-7,200 RPM |
| Camshaft Gear Attachment | 3-Bolt |
| Camshaft Material | Billet Steel |
| Engine Family | Chevrolet 262-400 c.i. 8 Cylinder (1958-1998) |
| Assembly Lubricant Included | No |
| Intake Valve Lift | 0.645 IN |
| Lifters Included | No |
| Lifter Type | Solid Roller |
| Cam Type | Solid Roller |
| Valve Springs Required | Yes |
⚠️ 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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Shipping: Free to the USA.
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