COMP Cams Camshaft CS 291T HR-107 MT Th
COMP Cams Camshaft CS 291T HR-107 MT Th
A$1,246.76
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Description
Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods, the Thumpr series' early intake valve opening and long exhaust duration create optimum overlap for that race car idle. The Thumpr grinds all require an aftermarket torque converter and lower gear ratio to ensure the drivetrain always puts the engine in its powerband. Additionally, Thumpr camshafts typically deliver reduced vacuum at idle, making a vacuum canister, pump or hydroboost a requirement for vehicles running power brakes.
Product Overview
Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods, the Thumpr series' early intake valve opening and long exhaust duration create optimum overlap for that race car idle. The Thumpr grinds all require an aftermarket torque converter and lower gear ratio to ensure the drivetrain always puts the engine in its powerband. Additionally, Thumpr camshafts typically deliver reduced vacuum at idle, making a vacuum canister, pump or hydroboost a requirement for vehicles running power brakes.
Product Details
| Advertised Exhaust Duration: | 311 |
|---|---|
| Advertised Intake Duration: | 291 |
| Amazon ASIN: | B002EDZVUU |
| Assembly Lubricant Included: | No |
| Basic Operating RPM Range: | 1,900-5,600 |
| C.A.R.B. E.O. Number: | N/A |
| C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?: | Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?: | Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?: | Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for On-Road Vehicles?: | No |
| C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?: | Yes, but must be a race/competition only vehicle. |
| C.A.R.B. Exemption Reason: | N/A |
| California Proposition 65: | WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov |
| Cam Type: | Hydraulic Roller |
| Cam and Lifter Kit Upgrade: | CL08-601-8 |
| Cam, Lifter and Gear Drive Upgrade: | GK08-601-8 |
| Camshaft Gear Attachment: | 3-Bolt |
| Camshaft Material: | Austempered Ductile Iron |
| Camshaft Series: | Thumpr |
| Description: | Mutha' Thumpr 235/249 Hydraulic Roller Cam for OE Roller SBC |
| Engine Family: | Chevrolet 305-350 c.i. 8 Cylinder O.E. Roller (1987-1998) |
| Exhaust Duration @ .050 in.: | 249 |
| Exhaust Duration at .050 inch Lift: | 249 |
| Exhaust Duration: | 311 |
| Exhaust Valve Lift(in): | 0.509 |
| Exhaust Valve Lift: | 0.509 |
| Grind Number: | 291THR7 |
| Intake Duration @ .050 in.: | 235 |
| Intake Duration at .050 Inch Lift: | 235 |
| Intake Duration: | 291 |
| Intake Valve Lift(in): | 0.522 |
| Intake Valve Lift: | 0.522 |
| K-Kit Upgrade: | K08-601-8 |
| Lifter Type: | Hydraulic Roller |
| Lifters Included: | No |
| Lobe Separation: | 107 |
| Part Number: | cca08-601-8 |
| RPM Range: | 1000-7000 |
| Title: | Mutha' Thumpr 235/249 Hydraulic Roller Cam for OE Roller SBC |
| Usage: | Street/Strip |
| Valve Springs Required: | Yes |
Application Summary
Fits '87+ GEN 1 Chevrolet 305-350 Small Blocks w/ Factory Roller Camshafts (Not LT-1/LS1 etc)
Part Type
Engine Camshaft
Specifications
- Product Attributes - Brand
- COMP Cams
- Product Attributes - Manufacturer's Part Number
- 08-601-8
- Product Attributes - Part Type
- Camshafts
- Product Attributes - Product Line
- COMP Cams Thumpr Hydraulic Roller Camshafts
- Product Attributes - UPC
- 036584171980
- Product Attributes - Cam Style
- Hydraulic roller, OE roller
- Product Attributes - Camshaft Use
- Street/Strip
- Product Attributes - Basic Operating RPM Range
- 2,200-5,900
- Product Attributes - Intake Duration at 050 inch Lift
- 235
- Product Attributes - Exhaust Duration at 050 inch Lift
- 249
- Product Attributes - Duration at 050 inch Lift
- 235 int./249 exh.
- Product Attributes - Advertised Intake Duration
- 291
- Product Attributes - Advertised Exhaust Duration
- 311
- Product Attributes - Advertised Duration
- 291 int./311 exh.
- Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
- 0.522 in.
- Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
- 0.509 in.
- Product Attributes - Valve Lift with Factory Rocker Arm Ratio
- 0.522 int./0.509 exh.
- Product Attributes - Lobe Separation (degrees)
- 107
- Product Attributes - Camshaft Gear Attachment
- 3-bolt
- Product Attributes - Remanufactured
- No
- Product Attributes - Computer-Controlled Compatible
- No
- Product Attributes - Grind Number
- 291THR7
- Product Attributes - Valve Springs Required
- Yes
- Product Attributes - Quantity
- Sold individually.
Reference Information
| Brand Name/s | Comp Cams |
|---|---|
| StreetFX SKU | cca08-601-8 |
| SFX Item ID | 4118287 |
| Supplier Item Code | 4118287 |
| Manufacturer SKU | 08-601-8 |
| Manufacturer UPC | 36584171980 |
| Alternative References | l46, l48, l65, lm1, lt-1, l82 |
Brochures
Compatibility
Fits '87+ GEN 1 Chevrolet 305-350 Small Blocks w/ Factory Roller Camshafts (Not LT-1/LS1 etc)
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