COMP Cams Nitrided Camshaft CS 287T H7
COMP Cams Nitrided Camshaft CS 287T H7
A$960.97
Last Available from MFR.
LAST ONE AVAILABLE from the manufacturer's distribution centre. Once sold, this item may not be immediately available again. The dispatch timeframe shown is an estimate based on historical orders for this part and is dependent on the manufacturer releasing the final available unit.
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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
Fits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. Does not fit LT1/LT4, or factory roller Small Blocks built from 1985 and newer. GM gradually added roller camshafts to 305's and 350's from the mid 80's forward. Camaros/Firebirds/Corvettes received the roller cams early, but many trucks and SUV's had flat tappet cams until the mid 90's. Remove the intake or timing cover to confirm whether the block is a factory roller or flat tappet. Does not fit the LS1, LS2, LS3 or any LS-based 4.8, 5.3, 5.7, 6.0 and 6.2. 1955-1957 Chevrolet 265 engines require a groove on the 5th cam journal for oiling. Contact us for more information.
Product Details
| Advertised Exhaust Duration: | 305 |
|---|---|
| Advertised Intake Duration: | 287 |
| Amazon ASIN: | B002EDX6R0 |
| Assembly Lubricant Included: | Yes |
| Basic Operating RPM Range: | 2,200-6,100 |
| 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 Flat Tappet |
| Camshaft Gear Attachment: | 3-Bolt |
| Camshaft Material: | Nitrided Cast Iron |
| Camshaft Series: | Thumpr |
| Description: | Mutha' Thumpr NIT 235/249 Hydraulic Flat Cam for Chevrolet Small Block |
| Engine Family: | Chevrolet 262-400 c.i. 8 Cylinder (1958-1998) |
| Exhaust Duration @ .050 in.: | 249 |
| Exhaust Duration at .050 inch Lift: | 249 |
| Exhaust Duration: | 305 |
| Exhaust Valve Lift(in): | 0.476 |
| Exhaust Valve Lift: | 0.476 |
| Grind Number: | 287TH7 |
| Intake Duration @ .050 in.: | 235 |
| Intake Duration at .050 Inch Lift: | 235 |
| Intake Duration: | 287 |
| Intake Valve Lift(in): | 0.489 |
| Intake Valve Lift: | 0.489 |
| Lifter Type: | Hydraulic Flat Tappet |
| Lifters Included: | No |
| Lobe Separation: | 107 |
| Part Number: | cca12-601-20 |
| RPM Range: | 2200-7000 |
| Title: | Mutha' Thumpr NIT 235/249 Hydraulic Flat Cam for Chevrolet Small Block |
| Usage: | Street/Strip |
| Valve Springs Required: | Yes |
Application Summary
Fits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. Does not fit LT1/LT4, or factory roller Small Blocks built from 1985 and newer. GM gradually added roller camshafts to 305's and 350's from the mid 80's forward. Camaros/Firebirds/Corvettes received the roller cams early, but many trucks and SUV's had flat tappet cams until the mid 90's. Remove the intake or timing cover to confirm whether the block is a factory roller or flat tappet. Does not fit the LS1, LS2, LS3 or any LS-based 4.8, 5.3, 5.7, 6.0 and 6.2. 1955-1957 Chevrolet 265 engines require a groove on the 5th cam journal for oiling. Contact us for more information.
Part Type
Engine Camshaft
Specifications
- Product Attributes - Brand
- COMP Cams
- Product Attributes - Manufacturer's Part Number
- 12-601-20
- Product Attributes - Part Type
- Camshafts
- Product Attributes - Product Line
- COMP Cams Thumpr Pro-Plasma Nitrided Camshafts
- Product Attributes - UPC
- 036584177937
- Product Attributes - Cam Style
- Hydraulic flat tappet
- Product Attributes - Camshaft Use
- Street/Strip
- Product Attributes - Camshaft Manufacturers Description
- HYDRAULIC - Mutha' Thumpr™ - High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.
- Product Attributes - Basic Operating RPM Range
- 2,200-6,100
- 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
- 287
- Product Attributes - Advertised Exhaust Duration
- 305
- Product Attributes - Advertised Duration
- 287 int./305 exh.
- Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
- 0.489 in.
- Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
- 0.476 in.
- Product Attributes - Valve Lift with Factory Rocker Arm Ratio
- 0.489 int./0.476 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
- 287TH7
- Product Attributes - Valve Springs Required
- Yes
- Product Attributes - Quantity
- Sold individually.
Reference Information
| Brand Name/s | Comp Cams |
|---|---|
| StreetFX SKU | cca12-601-20 |
| SFX Item ID | 4118734 |
| Supplier Item Code | 4118734 |
| Manufacturer SKU | 12-601-20 |
| Manufacturer UPC | 36584177937 |
| Alternative References | l46, l48, l65, lm1, lt-1, l82 |
Brochures
Compatibility
Fits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. Does not fit LT1/LT4, or factory roller Small Blocks built from 1985 and newer. GM gradually added roller camshafts to 305's and 350's from the mid 80's forward. Camaros/Firebirds/Corvettes received the roller cams early, but many trucks and SUV's had flat tappet cams until the mid 90's. Remove the intake or timing cover to confirm whether the block is a factory roller or flat tappet. Does not fit the LS1, LS2, LS3 or any LS-based 4.8, 5.3, 5.7, 6.0 and 6.2. 1955-1957 Chevrolet 265 engines require a groove on the 5th cam journal for oiling. Contact us for more information.
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