Thumpr 243/257 Hydraulic Flat Cam for Chevrolet Big Block 396-454

Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.

Description

Additional Attributes:

GTIN: 00036584176374
Advertised Exhaust Duration: 313
Advertised Intake Duration: 295
Amazon ASIN: B002EE4IDU
Assembly Lubricant Included: Yes
Basic Operating RPM Range: 2,300-6,200
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
California Proposition 65: WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Cam and Lifter Kit Upgrade: CL11-602-4
Cam Type: Hydraulic Flat Tappet
Cam, Lifter and Gear Drive Upgrade: GK11-602-4
Camshaft Gear Attachment: 3-Bolt
Camshaft Material: Cast 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: 0.507
Grind Number: 295TH7
Intake Duration at .050 Inch Lift: 243
Intake Valve Lift: 0.522
K-Kit Upgrade: K11-602-4
Lifter Type: Hydraulic Flat Tappet
Lifters Included: No
Lobe Separation: 107
Usage: Street/Strip
Valve Springs Required: Yes

Extended Information:

Emissions : CARB Eligible
Life Cycle Status: Available To Order

Packaging:

Quantity of Each: 1
Package UOM: EA
Dimension: 24.5 x 2.9 x 2.1 inches
Weight: 10.7145 PG

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