Big Mutha' Thumpr 243/257 Hydraulic Roller Cam For Chevrolet Big Block 396-454

Big Mutha' Thumpr 243/257 Hydraulic Roller Cam Vehicle Specific

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

Attributes:

• Brand Name: COMP Cams
• GTIN: 00036584150916
• Advertised Exhaust Duration: 319
• Advertised Intake Duration: 299
• Amazon ASIN: B0014F35SY
• Assembly Lubricant Included: No
• Basic Operating RPM Range: 2,500-6,100
• 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 Lifter and Gear Drive Upgrade: GK11-602-8
• Cam Type: Hydraulic Roller
• Cam and Lifter Kit Upgrade: CL11-602-8
• Camshaft Gear Attachment: 3-Bolt
• Camshaft Material: Austempered Ductile Iron
• Camshaft Series: Thumpr
• Engine Family: Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)
• Exhaust Duration at .050 inch Lift: 257
• Exhaust Valve Lift: 0.554
• Grind Number: 299THR7
• Intake Duration at .050 Inch Lift: 243
• Intake Valve Lift: 0.57
• K-Kit Upgrade: K11-602-8
• Lifter Type: Hydraulic Roller
• Lifters Included: No
• Lobe Separation: 107
• Usage: Street/Strip
• Valve Springs Required: Yes

Extended Information:

• Country of Origin: US
• Emissions : EPA Eligible

Packing Information:

• Quantity of Each: 1
• Package UOM: EA
• Dimension: 24.5 x 3 x 2.75 inches
• Weight: 10.22 POUNDS