COMP Cams Camshaft CS 274L312 S7
COMP Cams Camshaft CS 274L312 S7
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A$721.91 A$810.33
Last Available from MFR.
LAST ONE AVAILABLE from the manufacturer's distribution centre. Once sold, this item may not be immediately available again. The dispatch timeframe shown is an estimate based on historical orders for this part and is dependent on the manufacturer releasing the final available unit.
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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.
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: | 278 |
|---|---|
| Advertised Intake Duration: | 274 |
| Amazon ASIN: | B000P5DBBA |
| Assembly Lubricant Included: | Yes |
| Basic Operating RPM Range: | 3200-6,800 |
| 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 Flat Tappet |
| Camshaft Gear Attachment: | 3-Bolt |
| Camshaft Material: | Cast Iron |
| Camshaft Series: | Launcher Series |
| Description: | Launcher Series 248/252 Solid Flat Cam for Chevrolet Small Block |
| Engine Family: | Chevrolet 262-400 c.i. 8 Cylinder (1958-1998) |
| Exhaust Duration @ .050 in.: | 252 |
| Exhaust Duration at .050 inch Lift: | 252 |
| Exhaust Duration: | 278 |
| Exhaust Valve Lift(in): | 0.468 |
| Exhaust Valve Lift: | 0.468 |
| Grind Number: | LB2745 |
| Intake Duration @ .050 in.: | 248 |
| Intake Duration at .050 Inch Lift: | 248 |
| Intake Duration: | 274 |
| Intake Valve Lift(in): | 0.468 |
| Intake Valve Lift: | 0.468 |
| Lifter Type: | Solid Flat Tappet |
| Lifters Included: | No |
| Lobe Separation: | 107 |
| Part Number: | cca12-683-5 |
| RPM Range: | 3000-9000 |
| Title: | Launcher Series 248/252 Solid Flat Cam for Chevrolet Small Block |
| Usage: | Street/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
- 12-683-5
- Product Attributes - Part Type
- Camshafts
- Product Attributes - Product Line
- COMP Cams Oval Track Camshafts
- Product Attributes - UPC
- 036584070504
- Product Attributes - Cam Style
- Solid flat tappet
- Product Attributes - Camshaft Use
- Street/Strip
- Product Attributes - Basic Operating RPM Range
- 3,200-6,800
- Product Attributes - Intake Duration at 050 inch Lift
- 248
- Product Attributes - Exhaust Duration at 050 inch Lift
- 252
- Product Attributes - Duration at 050 inch Lift
- 248 int./252 exh.
- Product Attributes - Advertised Intake Duration
- 274
- Product Attributes - Advertised Exhaust Duration
- 278
- Product Attributes - Advertised Duration
- 274 int./278 exh.
- Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
- 0.468 in.
- Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
- 0.468 in.
- Product Attributes - Valve Lift with Factory Rocker Arm Ratio
- 0.468 int./0.468 exh.
- Product Attributes - Lobe Separation (degrees)
- 107
- Product Attributes - Intake Valve Lash
- 0.014 in.
- Product Attributes - Exhaust Valve Lash
- 0.014 in.
- Product Attributes - Remanufactured
- No
- Product Attributes - Computer-Controlled Compatible
- No
- Product Attributes - Grind Number
- CS 274L312 S7
- Product Attributes - Valve Springs Required
- Yes
- Product Attributes - Quantity
- Sold individually.
Reference Information
| Brand Name/s | Comp Cams |
|---|---|
| StreetFX SKU | cca12-683-5 |
| SFX Item ID | 4118803 |
| Supplier Item Code | 4118803 |
| Manufacturer SKU | 12-683-5 |
| Manufacturer UPC | 36584070504 |
| 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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