THUMPR 227/241 LSA 107 HYDRAULIC ROLLER CAMSHAFT FORD FE 390 428 BIG BLOCK, Lumpy Choppy Idle
RPM Operating Range:1900 to 5600, Lumpy Idle
Description
COMP CAMS, FE Big Block 390 428 Hydaulic Roller Camshaft, Thumpr, Choppy, Lumpy Idle, 33-600-11
Thumpr™ 227/241 Hydraulic Roller Cam for Ford 352-428. High performance street, stock converter ok, best with 2000+ converter & gears, choppy/thumping idle.
High performance street, stock converter ok, best with 2000+ converter and gears, choppy/thumping idle.
Engine Family: Ford FE Big Block 352 390 427 428 c.i. 8 Cylinder (1963-1977)
RPM Operating Range: 1,900-5,600
Grind Number: 283THR7
Cam Type: Hydraulic Roller
Lifter Style: Hydraulic Roller
Camshaft Series: Thumpr
Usage: Street/Performance
Advertised Intake Duration: 283
Advertised Exhaust Duration: 303
Intake Duration at .050 Inch Lift: 227
Exhaust Duration at .050 Inch Lift: 241
Intake Valve Lift: 0.557
Exhaust Valve Lift: 0.539
Lobe Separation: 107
Camshaft Gear Attachment:1-Bolt
Specifications
| SKU | 33-600-11 |
| Barcode # | 036584312857 |
| Brand | COMP CAMS |
| Lifters Included | No |
| Camshaft Series | Thumpr |
| Exhaust Duration At .050 Inch Lift | 241 |
| Advertised Exhaust Duration | 303 |
| intake valve lift | 0.557 |
| Camshaft Gear Attachment | 1-Bolt |
| Basic Operating Rpm Range | 1,900-5,600 |
| Lobe Separation | 107 |
| Cam Type | Hydraulic Roller |
| Lifter Type | Hydraulic Roller |
| Valve Springs Required | Yes |
| Grind Number | 283THR7 |
| Intake Duration At .050 Inch Lift | 227 |
| Advertised Intake Duration | 283 |
| Exhaust Valve Lift | 0.539 |
| Camshaft Material | Billet Steel |
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