Big Mutha' Thumpr 243/257 Hydraulic Roller GK-Kit Chevrolet Big Block 396-454

Big Mutha' Thumpr 243/257 Hydraulic Roller GK-Kit for Chevrolet Big Block 396-454. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, Gears, and headers, very rough idle.

Attributes:

• Brand Name: COMP Cams
• GTIN: 00036584183358
• Advertised Exhaust Duration: 319
• Advertised Intake Duration: 299
• Amazon ASIN: B002EE7EW2
• 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 Type: Hydraulic Roller
• 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
• Gaskets Included: No
• Intake Duration at .050 Inch Lift: 243
• Intake Valve Lift: 0.57
• Kit Type: GK-Kit - Cam and Gear Kit
• Lifter Type: Hydraulic Roller
• Lifters Included: Yes
• Locks Included: No
• Pushrods Included: No
• Retainers Included: No
• Timing Chain and Gears Included: Yes
• Usage: Street/Strip
• Valve Stem Seals Included: No

Extended Information:

• Country of Origin: US
• Emissions : EPA Eligible

Packing Information:

• Quantity of Each: 1
• Package UOM: KT
• Dimension: 26 x 10.5 x 5 inches
• Weight: 24 POUNDS