Strong torque, good mileage, stock to mildly modified combinations.
Camshaft Part #12-408-8 Grind #XR258HR-10 Duration @ 0.006": 258 / 264deg. Duration @ 0.050": 206 / 212deg Max Lift w/ 1.5RR: .480" / .487" Lobe Separation: 110deg. Lobe ID#'s: 3311 / 3312 Intake Centerline: 106deg. Engine Type: Chevrolet 350 Small Block Bore: 4.040" Stroke: 3.480" Displacement: 356ci. Compression: 9.25:1 Heads: Dart S/R. Intake: Edelbrock Performer. Carburetor: Holley #3310 Vac. Sec.Exhaust: 1 5/8" Headers. Max Torque: 413 ft/lbs @ 3700 RPM. Max Power: 325 HP @ 4400 RPM. Manifold Vacuum: 17" Hg @ 800 RPM & 18" Hg @ 1000 RPM w/ no load.
Camshaft Part #12-408-8 Grind #XR258HR-10 Duration @ 0.006": 258 / 264deg. Duration @ 0.050": 206 / 212deg Max Lift w/ 1.5RR: .480" / .487" Lobe Separation: 110deg. Lobe ID#'s: 3311 / 3312 Intake Centerline: 106deg. Engine Type: Chevrolet 350 Small Block Bore: 4.040" Stroke: 3.480" Displacement: 356ci. Compression: 9.25:1 Heads: Dart S/R. Intake: Edelbrock Performer. Carburetor: Holley #3310 Vac. Sec.Exhaust: 1 5/8" Headers. Max Torque: 413 ft/lbs @ 3700 RPM. Max Power: 325 HP @ 4400 RPM. Manifold Vacuum: 17" Hg @ 800 RPM & 18" Hg @ 1000 RPM w/ no load.
Application Summary:
| Year | Make/Model |
|---|---|
| 1995-1996 | AM General Hummer |
| 1965-1985 | Avanti II |
| 1987-1991 | Avanti II |
| 1965-1969 | Bizzarrini GT America |
| 1973-1974 | Buick Apollo |
| 1973 | Buick Centurion |
| 1973-1974 | Buick Century |
| 1977-1981 | Buick Century |
| 1991-1996 | Buick Commercial Chassis |
| 1970 | Buick Estate Wagon |
| 1973 | Buick Estate Wagon |
| 1970-1972 | Buick GS |
| 1968-1969 | Buick GS 350 |
| 1968-1974 | Buick LeSabre |
| 1978 | Buick LeSabre |
| 1973-1974 | Buick Regal |
| 1977-1980 | Buick Regal |
| 1982-1987 | Buick Regal |
| 1991-1996 | Buick Roadmaster |
| 1968-1972 | Buick Skylark |
| 1977-1979 | Buick Skylark |
| 1968-1969 | Buick Special |
| 1968-1972 | Buick Sportwagon |
| 1990-1992 | Cadillac Brougham |
| 1992-1996 | Cadillac Commercial Chassis |
| 1993-1996 | Cadillac Fleetwood |
| 1966-1974 | Checker Aerobus |
| 1969-1970 | Checker Deluxe |
| 1965-1982 | Checker Marathon |
| 1969-1974 | Checker Taxicab |
| 1959 | Chevrolet 3B |
| 1959 | Chevrolet 3C |
| 1959 | Chevrolet 3D |
| 1959 | Chevrolet 3E |
| 1959 | Chevrolet 3F |
| 1959 | Chevrolet 3G |
| 1980-1990 | Chevrolet B60 |
| 1955-1975 | Chevrolet Bel Air |
| 1981 | Chevrolet Bel Air |
| 1958-1972 | Chevrolet Biscayne |
| 1969-1974 | Chevrolet Blazer |
| 1987-1994 | Chevrolet Blazer |
| 1959-1961 | Chevrolet Brookwood |
| 1969-1972 | Chevrolet Brookwood |
| 1975-1986 | Chevrolet C10 |
| 1960-1974 | Chevrolet C10 Pickup |
| 1967-1986 | Chevrolet C10 Suburban |
| 1982-1985 | Chevrolet C15 |
| 1988-1995 | Chevrolet C1500 |
| 1992-1995 | Chevrolet C1500 Suburban |
| 1975-1987 | Chevrolet C20 |
| 1960-1974 | Chevrolet C20 Pickup |
| 1967-1986 | Chevrolet C20 Suburban |
| 1988-1995 | Chevrolet C2500 |
| 1992-1995 | Chevrolet C2500 Suburban |
| 1975-1986 | Chevrolet C30 |
| 1960-1974 | Chevrolet C30 Pickup |
| 1983-1994 | Chevrolet C35 |
| 1988-1995 | Chevrolet C3500 |
| 1991-1995 | Chevrolet C3500HD |
| 1960-1962 | Chevrolet C40 |
| 1980-1990 | Chevrolet C50 |
| 1980-1990 | Chevrolet C60 |
| 1986 | Chevrolet C70 |
| 1967-1986 | Chevrolet Camaro |
| 1966-1996 | Chevrolet Caprice |
| 2000 | Chevrolet Cargo Van |
| 1967-1973 | Chevrolet Chevelle |
| 1963-1968 | Chevrolet Chevy II |
| 1991-1994 | Chevrolet Commercial Chassis |
| 1955-1982 | Chevrolet Corvette |
| 1984-1986 | Chevrolet Corvette |
| 1957-1958 | Chevrolet Del Ray |
| 1959-1960 | Chevrolet El Camino |
| Attributes | |
| Advertised Exhaust Duration | 264, 264, 264 |
| Advertised Intake Duration | 258, 258, 258 |
| Amazon ASIN | B002DFMLE8, B002DFMLE8 |
| ASIN | B002DFMLE8 |
| Assembly Lubricant Included | No, No, No |
| Basic Operating RPM Range | 1,000-5,000, 1,000-5,000, 1,000-5,000 |
| C.A.R.B. E.O. Number | N/A, N/A |
| C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967? | Yes, but must meet tailpipe emission standards for year of vehicle., Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for On-Road Vehicles? | No, No |
| C.A.R.B. Exempt for Racing and Off-Road Only Vehicles? | Yes, but must be a race/competition only vehicle., Yes, but must be a race/competition only vehicle. |
| C.A.R.B. Exemption Reason | N/A, N/A |
| California Proposition 65 | WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| Cam and Lifter Kit Upgrade | CL12-408-8, CL12-408-8, CL12-408-8 |
| Cam Type | Hydraulic Roller, Hydraulic Roller, Hydraulic Roller |
| Camshaft Gear Attachment | 3-Bolt, 3-Bolt, 3-Bolt |
| Camshaft Material | Austempered Ductile Iron, Austempered Ductile Iron, Austempered Ductile Iron |
| Camshaft Series | Xtreme Energy, Xtreme Energy |
| Country of Origin (Primary) | US |
| Emission Code | Not in CA |
| Engine Family | Chevrolet 262-400 c.i. 8 Cylinder (1958-1998), Chevrolet 262-400 c.i. 8 Cylinder (1958-1998), Chevrolet 262-400 c.i. 8 Cylinder (1958-1998) |
| Engine Make/Size | Chevy Small Block (262-400) |
| Exh. Duration @ .050 in. (Deg) | 212 |
| Exh. Duration Advertised (Deg) | 264 |
| Exhaust Duration at .050 inch Lift | 212, 212, 212 |
| Exhaust Valve Lift | 0.487, 0.487, 0.487 |
| Exhaust Valve Lift (in.) | 0.487 |
| Grind Number | XR258HR, XR258HR |
| Harmonized Tariff Code (Schedule B) | 8409914000 |
| Hazardous Material Code | N |
| Int. Duration @ .050 in. (Deg) | 206 |
| Int. Duration Advertised (Deg) | 258 |
| Intake Duration at .050 Inch Lift | 206, 206, 206 |
| Intake Valve Lift | 0.48, 0.48, 0.48 |
| Intake Valve Lift (in.) | 0.480 |
| K-Kit Upgrade | K12-408-8, K12-408-8, K12-408-8 |
| Life Cycle Status Code | Available to Order |
| Lifter Style | Hydraulic Roller |
| Lifter Type | Hydraulic Roller, Hydraulic Roller, Hydraulic Roller |
| Lifters Included | No, No, No |
| Lobe Separation | 110, 110, 110 |
| NAFTA Preference Criterion Code | B |
| RPM Range | 1000-5000 |
| SDR Required Flag | N |
| SDS Sheet Number | N/A |
| SK-Kit Upgrade | SK12-408-8, SK12-408-8, SK12-408-8 |
| Usage | Street/Performance, Street/Performance |
| Valve Springs Required | Yes, Yes, Yes |
| Warranty Time | 12 |
| GTIN | 00036584025108 |