| Description_ASM |
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. |
| Description_DEF |
Engine Camshaft |
| Description_DES |
Xtreme Energy NIT 250/256 Hydraulic Flat Cam for Chevrolet Small Block |
| Description_INV |
XE NIT 250/256 Hyd Flat Cam SBC |
| Description_EXT |
Pro Street/bracket, needs good intake, headers, gear and 3300+ stall. Nitrided. |
| Description_KEY |
265, 283, 307, 302, 305, 327, 350, 383, 400, 427, L46, L48, L65, LM1, LT-1, L82, L81, LS9, L83, L98, L05, LG3, LG4, LT1, LT4, Camaro, Corvette, Chevelle, Stingray, Silverado, C10, Firebird, Chevrolet, Chevy, Small Block Chevy, Caprice, Malibu, Impala, Nova, 355, GEN1, Monte Carlo, S10 |
| Description_SHO |
XE NIT 250/256HFTSBC |
| Description_SHP |
None |
| Description_MKT |
Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts, the Xtreme Energy grind family offers gains in torque and horsepower while still delivering adequate vacuum for power brakes and other vacuum dependent accessories. Xtreme Energy camshafts work great in carbureted applications, but offer the best performance with aftermarket intake manifolds, lower gear ratios, headers and free flowing exhaust. |
| Basic Operating RPM Range |
2,800-7000 |
| Engine Family |
Chevrolet 262-400 c.i. 8 Cylinder (1958-1998) |
| Assembly Lubricant Included |
Yes |
| Amazon ASIN |
B002EE2FYY |
| Title |
Xtreme Energy NIT 250/256 Hydraulic Flat Cam for Chevrolet Small Block |
| Intake Valve Lift |
0.519 |
| Exhaust Duration at .050 inch Lift |
256 |
| Intake Duration at .050 Inch Lift |
250 |
| C.A.R.B. Exempt for On-Road Vehicles? |
No |
| Advertised Intake Duration |
294 |
| Valve Springs Required |
Yes |
| Camshaft Material |
Nitrided Cast Iron |
| Advertised Exhaust Duration |
306 |
| 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. Exempt for Federally Certified Vehicles Manufactured Before 1967? |
Yes, but must meet tailpipe emission standards for year of vehicle. |
| Grind Number |
XE294H |
| California Proposition 65 |
WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov |
| Camshaft Gear Attachment |
3-Bolt |
| C.A.R.B. Exemption Reason |
N/A |
| Cam Type |
Hydraulic Flat Tappet |
| Lifters Included |
No |
| C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965? |
Yes, but must meet tailpipe emission standards for year of vehicle. |
| Exhaust Valve Lift |
0.523 |
| Lifter Type |
Hydraulic Flat Tappet |
| Lobe Separation |
110 |
| C.A.R.B. E.O. Number |
N/A |
| C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967? |
Yes, but must meet tailpipe emission standards for year of vehicle. |
| Camshaft Series |
Xtreme Energy |
| Usage |
Street/Strip |
| Length |
3.0000 |
| Width |
3.0000 |
| Height |
25.0000 |
| Weight |
9.0000 |
