COMP Cams Camshaft CS 312R-8 .900 Base
COMP Cams Camshaft CS 312R-8 .900 Base
A$1,225.67
Available from MFR.
This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.
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Description
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.
Product Overview
Fits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. Does not fit LT1/LT4, or factory roller Small Blocks built from 1985 and newer. GM gradually added roller camshafts to 305's and 350's from the mid 80's forward. Camaros/Firebirds/Corvettes received the roller cams early, but many trucks and SUV's had flat tappet cams until the mid 90's. Remove the intake or timing cover to confirm whether the block is a factory roller or flat tappet. Does not fit the LS1, LS2, LS3 or any LS-based 4.8, 5.3, 5.7, 6.0 and 6.2. 1955-1957 Chevrolet 265 engines require a groove on the 5th cam journal for oiling. Contact us for more information.
Product Details
| Advertised Exhaust Duration: | 325 |
|---|---|
| Advertised Intake Duration: | 312 |
| Amazon ASIN: | B001O0BTFA |
| Assembly Lubricant Included: | No |
| Basic Operating RPM Range: | 5,000-7,500 |
| C.A.R.B. E.O. Number: | N/A |
| C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?: | Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?: | Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?: | Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for On-Road Vehicles?: | No |
| C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?: | Yes, but must be a race/competition only vehicle. |
| C.A.R.B. Exemption Reason: | N/A |
| California Proposition 65: | WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov |
| Cam Type: | Solid Roller |
| Camshaft Gear Attachment: | 3-Bolt |
| Camshaft Material: | Billet Steel |
| Camshaft Series: | Drag Race (.900" Base Circle) |
| Description: | Drag Race 279/286 Solid Roller Cam for Chevrolet Small Block |
| Engine Family: | Chevrolet 262-400 c.i. 8 Cylinder (1958-1998) |
| Exhaust Duration @ .050 in.: | 286 |
| Exhaust Duration at .050 inch Lift: | 286 |
| Exhaust Duration: | 325 |
| Exhaust Valve Lift(in): | 0.645 |
| Exhaust Valve Lift: | 0.645 |
| Grind Number: | 312R-8 |
| Intake Duration @ .050 in.: | 279 |
| Intake Duration at .050 Inch Lift: | 279 |
| Intake Duration: | 312 |
| Intake Valve Lift(in): | 0.679 |
| Intake Valve Lift: | 0.679 |
| Lifter Type: | Solid Roller |
| Lifters Included: | No |
| Lobe Separation: | 108 |
| Part Number: | cca12-970-9 |
| RPM Range: | 5000-13000 |
| Title: | Drag Race 279/286 Solid Roller Cam for Chevrolet Small Block |
| Usage: | Strip |
| Valve Springs Required: | Yes |
Application Summary
Fits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. Does not fit LT1/LT4, or factory roller Small Blocks built from 1985 and newer. GM gradually added roller camshafts to 305's and 350's from the mid 80's forward. Camaros/Firebirds/Corvettes received the roller cams early, but many trucks and SUV's had flat tappet cams until the mid 90's. Remove the intake or timing cover to confirm whether the block is a factory roller or flat tappet. Does not fit the LS1, LS2, LS3 or any LS-based 4.8, 5.3, 5.7, 6.0 and 6.2. 1955-1957 Chevrolet 265 engines require a groove on the 5th cam journal for oiling. Contact us for more information.
Part Type
Engine Camshaft
Specifications
- Product Attributes - Brand
- COMP Cams
- Product Attributes - Manufacturer's Part Number
- 12-970-9
- Product Attributes - Part Type
- Camshafts
- Product Attributes - Product Line
- COMP Cams Drag Race Camshafts
- Product Attributes - UPC
- 036584065975
- Product Attributes - Cam Style
- Solid roller, Retro-fit
- Product Attributes - Camshaft Use
- Drag race
- Product Attributes - Basic Operating RPM Range
- 5,000-7,500
- Product Attributes - Intake Duration at 050 inch Lift
- 279
- Product Attributes - Exhaust Duration at 050 inch Lift
- 286
- Product Attributes - Duration at 050 inch Lift
- 279 int./286 exh.
- Product Attributes - Advertised Intake Duration
- 312
- Product Attributes - Advertised Exhaust Duration
- 325
- Product Attributes - Advertised Duration
- 312 int./325 exh.
- Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
- 0.679 in.
- Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
- 0.645 in.
- Product Attributes - Valve Lift with Factory Rocker Arm Ratio
- 0.679 int./0.645 exh.
- Product Attributes - Lobe Separation (degrees)
- 108
- Product Attributes - Intake Valve Lash
- 0.024 in.
- Product Attributes - Exhaust Valve Lash
- 0.026 in.
- Product Attributes - Remanufactured
- No
- Product Attributes - Computer-Controlled Compatible
- No
- Product Attributes - Grind Number
- CS 312R-8 .900 BASE CIRCLE
- Product Attributes - Valve Springs Required
- Yes
- Product Attributes - Quantity
- Sold individually.
- Product Attributes - Notes
- This cam has a .900 in. base circle. Requires upgraded gear, thrust button, and wear plate. Designed for 400 c.i.d. and larger engines.
Reference Information
| Brand Name/s | Comp Cams |
|---|---|
| StreetFX SKU | cca12-970-9 |
| SFX Item ID | 4118904 |
| Supplier Item Code | 4118904 |
| Manufacturer SKU | 12-970-9 |
| Manufacturer UPC | 36584065975 |
| Alternative References | l46, l48, l65, lm1, lt-1, l82 |
Brochures
Compatibility
Fits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. Does not fit LT1/LT4, or factory roller Small Blocks built from 1985 and newer. GM gradually added roller camshafts to 305's and 350's from the mid 80's forward. Camaros/Firebirds/Corvettes received the roller cams early, but many trucks and SUV's had flat tappet cams until the mid 90's. Remove the intake or timing cover to confirm whether the block is a factory roller or flat tappet. Does not fit the LS1, LS2, LS3 or any LS-based 4.8, 5.3, 5.7, 6.0 and 6.2. 1955-1957 Chevrolet 265 engines require a groove on the 5th cam journal for oiling. Contact us for more information.
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