4-Pattern 253/263 IB 255/265 OB Hydraulic Roller Cam Chevrolet Big Block 396-454

Hydraulic Roller: 4-Pattern 305QIO10 - Recommended in highly modified street/strip or bracket race engines and also works well in 572+c.i.d. Applications. Vehicle Specific

• Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts

Attributes:

• Brand Name: COMP Cams
• GTIN: 00036584259718
• Advertised Inboard Exhaust Duration: 317
• Advertised Inboard Intake Duration: 305
• Advertised Outboard Exhaust Duration: 319
• Advertised Outboard Intake Duration: 307
• Amazon ASIN: B00CWZVWZS
• Assembly Lubricant Included: No
• Basic Operating RPM Range: 3200-7,500
• 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
• Cam Type: Hydraulic Roller
• Camshaft Gear Attachment: 3-Bolt
• Camshaft Material: Billet Steel
• Camshaft Series: 4-Pattern
• Engine Family: Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)
• Grind Number: 305QIO10
• Inboard Exhaust Duration at .050 inch Lift: 263
• Inboard Exhaust Valve Lift: 0.661
• Inboard Intake Duration at .050 Inch Lift: 253
• Inboard Intake Valve Lift: 0.678
• Lifter Type: Hydraulic Roller
• Lifters Included: No
• Outboard Exhaust Duration at .050 inch Lift: 265
• Outboard Exhaust Valve Lift: 0.661
• Outboard Intake Duration at .050 Inch Lift: 255
• Outboard Intake Valve Lift: 0.678
• Usage: Strip
• Valve Springs Required: Yes

Extended Information:

• Country of Origin: United States
• Emissions : EPA Eligible

Packing Information:

• Quantity of Each: 1
• Package UOM: EA
• Dimension: 24.5 x 3 x 2.75 inches
• Weight: 10.7 POUNDS