Description
Big Mutha' Thumpr 243/257 Hydraulic Roller Cam
Product Overview
*Thumpr Camshafts*
* Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods
* Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note
* Best with aftermarket converters and more rear gear
Product Details
| Advertised Exhaust Duration: | 319 |
|---|---|
| Advertised Intake Duration: | 299 |
| Amazon ASIN: | B002EDWNQ0 |
| 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: | CL08-602-8 |
| Cam, Lifter and Gear Drive Upgrade: | GK08-602-8 |
| Camshaft Gear Attachment: | 3-Bolt |
| Camshaft Material: | Austempered Ductile Iron |
| Camshaft Series: | Thumpr |
| Description: | Big Mutha' Thumpr 243/257 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.: | 257 |
| Exhaust Duration at .050 inch Lift: | 257 |
| Exhaust Duration: | 319 |
| Exhaust Valve Lift(in): | 0.519 |
| Exhaust Valve Lift: | 0.519 |
| Grind Number: | 299THR7 |
| Intake Duration @ .050 in.: | 243 |
| Intake Duration at .050 Inch Lift: | 243 |
| Intake Duration: | 299 |
| Intake Valve Lift(in): | 0.533 |
| Intake Valve Lift: | 0.533 |
| K-Kit Upgrade: | K08-602-8 |
| Lifter Type: | Hydraulic Roller |
| Lifters Included: | No |
| Lobe Separation: | 107 |
| Part Number: | cca08-602-8 |
| RPM Range: | 1000-7000 |
| Title: | Big Mutha' Thumpr 243/257 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
- 08-602-8
- Product Attributes - Part Type
- Camshafts
- Product Attributes - Product Line
- COMP Cams Thumpr Hydraulic Roller Camshafts
- Product Attributes - UPC
- 036584171997
- Product Attributes - Cam Style
- Hydraulic roller, OE roller
- Product Attributes - Camshaft Use
- Street/Strip
- Product Attributes - Basic Operating RPM Range
- 2,500-6,200
- Product Attributes - Intake Duration at 050 inch Lift
- 243
- Product Attributes - Exhaust Duration at 050 inch Lift
- 257
- Product Attributes - Duration at 050 inch Lift
- 243 int./257 exh.
- Product Attributes - Advertised Intake Duration
- 299
- Product Attributes - Advertised Exhaust Duration
- 319
- Product Attributes - Advertised Duration
- 299 int./319 exh.
- Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
- 0.533 in.
- Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
- 0.519 in.
- Product Attributes - Valve Lift with Factory Rocker Arm Ratio
- 0.533 int./0.519 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
- 299THR7
- Product Attributes - Valve Springs Required
- Yes
- Product Attributes - Quantity
- Sold individually.
Reference Information
| Brand Name/s | Comp Cams |
|---|---|
| StreetFX SKU | cca08-602-8 |
| SFX Item ID | 4118288 |
| Supplier Item Code | 4118288 |
| Manufacturer SKU | 08-602-8 |
| Manufacturer UPC | 36584171997 |
| 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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