| Description_ASM |
Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts |
| Description_DEF |
Engine Camshaft |
| Description_DES |
4-Pattern 253/263 IB 255/265 OB Hydraulic Roller Cam Chevrolet Big Block 396-454 |
| Description_EXT |
Recommended in highly modified street/strip or bracket race engines and also works well in 572+ c.i. applications. |
| Description_KEY |
Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572 |
| Description_INV |
4-Pattern 253/263 H-Rlr Cam BBC 396-454 |
| Description_SHO |
4Pt 253/263 HRlr BBC |
| Description_SHP |
None |
| Grind Number |
305QIO10 |
| Camshaft Gear Attachment |
3-Bolt |
| Outboard Exhaust Duration at .050 inch Lift |
265 |
| Amazon ASIN |
B00CWZVWZS |
| Outboard Exhaust Valve Lift |
0.661 |
| Cam Type |
Hydraulic Roller |
| C.A.R.B. E.O. Number |
N/A |
| Inboard Exhaust Valve Lift |
0.661 |
| C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967? |
Yes, but must meet tailpipe emission standards for year of vehicle. |
| Inboard Intake Duration at .050 Inch Lift |
253 |
| Lifters Included |
No |
| Outboard Intake Valve Lift |
0.678 |
| C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967? |
Yes, but must meet tailpipe emission standards for year of vehicle. |
| Advertised Inboard Exhaust Duration |
317 |
| Advertised Inboard Intake Duration |
305 |
| Basic Operating RPM Range |
3200-7,500 |
| Lifter Type |
Hydraulic Roller |
| Outboard Intake Duration at .050 Inch Lift |
255 |
| Valve Springs Required |
Yes |
| 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 |
| Inboard Intake Valve Lift |
0.678 |
| Title |
4-Pattern 253/263 IB 255/265 OB Hydraulic Roller Cam Chevrolet Big Block 396-454 |
| Advertised Outboard Intake Duration |
307 |
| Assembly Lubricant Included |
No |
| Usage |
Strip |
| Camshaft Material |
Billet Steel |
| C.A.R.B. Exempt for On-Road Vehicles? |
No |
| Advertised Outboard Exhaust Duration |
319 |
| Inboard Exhaust Duration at .050 inch Lift |
263 |
| Camshaft Series |
4-Pattern |
| California Proposition 65 |
WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov |
| C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965? |
Yes, but must meet tailpipe emission standards for year of vehicle. |
| Engine Family |
Chevrolet 396-454 c.i. 8 Cylinder (1967-1996) |
| Length |
3.0000 |
| Width |
3.0000 |
| Height |
25.0000 |
| Weight |
11.0000 |
