Engine Kits

Comp Cams Big Mutha Thumpr™, 299THR7  Very Rough Idle, Street/Strip
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Comp Cams Big Mutha Thumpr™, 299THR7 Very Rough Idle, Street/Strip



Part #: 08-602-8
List Price: $587.98
Our Price: $293.99
You Save: $293.99



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

Big Mutha Thumpr Hydraulic Flat Tappet Camshafts OE Hydraulic Roller Camshaft for Small Block Chevy 8 Cylinder 87-98 Carb engines.

2500-6200
Camshaft Operating Range
Advertised Duration 299 int./319 exh.
Advertised Exhaust Duration 319
Advertised Intake Duration 299
Basic Operating RPM Range 2,500-6,200
Brand COMP Cams
Cam Style Hydraulic roller tappet
Camshaft Gear Attachment 3-bolt
Computer-Controlled Compatible No
Duration at 050 inch Lift 243 int./257 exh.
Exhaust Duration at 050 inch Lift 257
Exhaust Valve Lash 0.000 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.519 in.
Grind Number 299THR7
Intake Duration at 050 inch Lift 243
Intake Valve Lash 0.000 in.
Intake Valve Lift with Factory Rocker Arm Ratio 0.533 in.
Lobe Separation (degrees) 107
Part Type Camshafts
Product Line COMP Cams Thumpr Retro-Fit Hydraulic Roller Camshafts
Quantity Sold individually.
Valve Lift with Factory Rocker Arm Ratio 0.533 int./0.519 exh. lift