Engine Kits

Comp Cams Thumpr 283THR7 Choppy Idle, High Performance Street
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Comp Cams Thumpr 283THR7 Choppy Idle, High Performance Street



Part #: 08-600-8
List Price: $587.98
Our Price: $293.99
You Save: $293.99

Availability: In Stock



Thumpr™ Hydraulic Roller Camshafts for 1987-1998 305-350 Originally Equipped With Hydraulic Roller Camshaft & Most Crate Engines, Except LT1 and LT4. 1900 - 5600 RPM

Hydraulic Roller-(Thumpr™) High performance street, stock converter ok, best with 2000+ converter and gears, choppy/thumping idle.

Let's face it, nothing grabs our attention at a car show or cruise night more than the hard hitting sound a thumping, high performance idle. Thumpr™ Camshafts deliver that aggressive, head-turning sound like no other cam on the market. Available in hydraulic flat tappet and hydraulic roller camshafts, Thumpr™ Cams are now available for most popular applications, carb and late model efi.

Designed to provide maximum performance when combined with the latest in valve train components, such as Beehive™ Valve Springs, Ultra Pro Magnum™ Rockers and Magnum™ Pushrods

1900-5600 Camshaft Operating Range
Advertised Duration 283 int./303 exh.
Advertised Exhaust Duration 303
Advertised Intake Duration 283
Basic Operating RPM Range 1,900-5,600
Brand COMP Cams
Cam Style Hydraulic roller tappet
Camshaft Gear Attachment 3-bolt
Computer-Controlled Compatible No
Duration at 050 inch Lift 227 int./241 exh.
Exhaust Duration at 050 inch Lift 241
Exhaust Valve Lash 0.000 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.498 in.
Grind Number 283THR7
Intake Duration at 050 inch Lift 227
Intake Valve Lash 0.000 in.
Intake Valve Lift with Factory Rocker Arm Ratio 0.513 in.
Lobe Separation (degrees) 107
Part Type Camshafts
Product Line COMP Cams Thumpr Hydraulic Roller Camshafts
Quantity Sold individually.
Valve Lift with Factory Rocker Arm Ratio 0.513 int./0.498 exh. lift