Engine Kits

1955-98 Chevy Small Block 262-400 8 Cyl. Mutha Thumpr Cam & Lifter Kit
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1955-98 Chevy Small Block 262-400 8 Cyl. Mutha Thumpr Cam & Lifter Kit



Part #: CL12-601-4
List Price: $425.50
Our Price: $212.75
You Save: $212.75

Availability: In Stock



Comp Cams Mutha Thumpr Camshaft & Lifter Kit Chevy 8cyl '55-'98

This kit is high performance street/strip, needs 9:1 CR, 2500+ stall, intake, gears and headers. It has a rough idle.
Advertised Duration 287 int./305 exh.
Advertised Exhaust Duration 305
Advertised Intake Duration 287
Assembly Lubricant Included Yes
Basic Operating RPM Range 2,200-6,100
Brand COMP Cams
Cam Style Hydraulic flat tappet
Camshaft Gear Attachment 3-bolt
Computer-Controlled Compatible No
Duration at 050 inch Lift 235 int./249 exh.
Exhaust Duration at 050 inch Lift 249
Exhaust Valve Lash 0.000 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.476 in.
Gaskets Included No
Grind Number 287TH7
Intake Duration at 050 inch Lift 235
Intake Valve Lash 0.000 in.
Intake Valve Lift with Factory Rocker Arm Ratio 0.489 in.
Lifter Style Hydraulic flat tappet
Lifters Included Yes
Lobe Separation (degrees) 107
Locks Included No
Part Type Camshaft and Lifter Kits
Product Line COMP Cams Thumpr Hydraulic Flat Tappet Cam and Lifter Kits
Pushrods Included No
Quantity Sold as a kit.
Retainers Included No
Rocker Arms Included No
Timing Chain and Gears Included No
Valve Lift with Factory Rocker Arm Ratio 0.489 int./0.476 exh. lift
Valve Springs Included No
Valve Stem Seal Set Included No