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COMP Cams 54-702-11 Stage 2 Thumpr Cam for GEN III LS 4.8/5.3/6.0L Trucks
This part fits specific vehicles. Select your vehicle to check the fit. You can still add it to your cart.
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Enter your Engine Family Number and we will confirm whether this exact converter is street-legal for your vehicle.
Larger version of No Springs Required (NSR) Thumpr design for 5.3 & 6.0L truck applications. Ideal for more highly modified truck w/ headers, converter, gear, etc.
Stage 2 Thumpr 226/237 Hydraulic Roller Cam
Specifications
| Camshaft Series | Thumpr NSR (No Springs Required) |
| Usage | Street / Performance |
| Exhaust Valve Lift | 0.638 IN |
| Intake Valve Lift | 0.663 IN |
| Basic Operating RPM Range | 1,800-6,600 RPM |
| Lobe Separation | 113 deg |
| Recommended Upgraded Stock Rocker Arms | 1477-16 |
| Recommended Max-Lift BSR Shaft Rocker System | 1981-16 |
| Stage | 2 |
| Intake Duration at .050 Inch Lift | 226 deg |
| Exhaust Duration at .050 inch Lift | 237 deg |
| Advertised Intake Duration | 280 deg |
| Grind Number | 280LTH13 |
| Advertised Exhaust Duration | 299 deg |
| Camshaft Gear Attachment | 3 |
| Camshaft Gear Attachment | 3-Bolt |
| Recommended Cam Install Kit | 5621 |
| Camshaft Material | Billet Steel |
| CK-Kit Upgrade | CK54-702-11 |
| Engine Family | GM LS GEN III/IV 3-Bolt 8 Cylinder (1997-2015) |
| Lifter Type | Hydraulic Roller |
| Cam Type | Hydraulic Roller |
| MK-Kit Upgrade | MK54-702-11 |
| Valve Springs Required | No |
| Assembly Lubricant Included | No |
| Lifters Included | No |
Note: CK and MK camshaft kits are available for this camshaft. Add CK or MK to the beginning of this part number for a CK or MK Kit with appropriately matched valvetrain parts.
⚠️ California Proposition 65 Warning
California Residents: This product can expose you to chemicals which are known to the State of California to cause cancer or other reproductive harm. Please visit www.p65warnings.ca.gov for more information.
Warranty: 12 Months
Please check the product description for the manufacturer’s application details, or ask a specialist — we’ll confirm whether it fits your vehicle before you buy.
Shipping Information
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Shipping: Free to the USA.
Orders are processed during normal business days. Delivery dates may vary by carrier and destination.
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