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COMP Cams Camshaft CS 321QnHR-8

SKU: CCA12-872-11

Camshafts

CCA Camshafts...

COMP Cams Camshaft CS 321QnHR-8

SKU: CCA12-872-11

Camshafts

CCA Camshafts...

A$1,284.52
Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.

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Description

DR 267/275 HrlrSBC

Drag Race 267/275 Hydraulic Roller Cam WARNING: Camshaft Optimized for use with a Melanized or Nitrided distributor Gear. Not compatible with cast or Steel Gears without similar surface treatments. Failure to utilize the proper distributor Gear will void all warranties and/or return policies.

Additional Information

Best in larger c.i. engines. Needs 11.5:1+ compression and 4500 stall.

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

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.

Additional Application Notes
• In 1987, GM began using hydraulic roller camshafts in Chevrolet Small Block V8's. Before ordering this camshaft, verify that your engine has a flat tappet camshaft. If your engine features a roller camshaft, look at our "08-" camshafts or "07-" camshafts if equipped with an LT1/LT4.
• In 1987, GM began using hydraulic roller camshafts in Chevrolet Small Block V8's. Before ordering this camshaft, verify that your engine has a flat tappet camshaft. If your engine features a roller camshaft, look at our "08-" camshafts or "07-" camshafts if equipped with an LT1/LT4. From 1985-1998 Chevrolet introduced the factory roller Small Block into GM cars and trucks. Verify whether or not your vehicle came with a factory roller camshaft. If your vehicle was equipped with a roller camshaft, look to our camshafts and kits that start with "08-".

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Data: v4.2 - Upd: 2026-11-07 21:25:14

Features

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

Advertised Exhaust Duration:329
Advertised Intake Duration:321
Assembly Lubricant Included:No
Basic Operating RPM Range:4,200-7200
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.
Cam Type:Hydraulic Roller
Camshaft Gear Attachment:3-Bolt
Camshaft Material:Billet Steel
Camshaft Series:Drag Race
Description:Drag Race 267/275 Hydraulic Roller Cam for Chevrolet Small Block
Engine Family:Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
Exhaust Duration @ .050 in.:275
Exhaust Duration at .050 inch Lift:275
Exhaust Duration:329
Exhaust Valve Lift(in):0.6
Exhaust Valve Lift:0.6
Grind Number:321QNHR-8
Intake Duration @ .050 in.:267
Intake Duration at .050 Inch Lift:267
Intake Duration:321
Intake Valve Lift(in):0.600
Intake Valve Lift:0.6
Lifter Type:Hydraulic Roller
Lifters Included:No
Part Number:cca12-872-11
RPM Range:4200-7200
Title:Drag Race 267/275 Hydraulic Roller Cam for Chevrolet Small Block
Usage:Strip
Valve Springs Required:Yes

Product Downloads

# Document Type Download
1. Catalog

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-07 19:01:27

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Comp Cams, Comp Cams (edelbrock)
StreetFX SKU cca12-872-11
SFX Item ID 4118881
Accounting SKU cca-12-872-11
Manufacturer SKU 12-872-11
Manufacturer UPC 036584265498
Alternative References 12-872-11, CCA-12-872-11

Camshaft, Hydraulic Roller, Duration 321 Int./329 Exh., Lift 0.600 Int./0.600 Exh., Lobe Separation 108, Chevy, SBC, 262-400, Each

COMP Cams drag race camshafts are offered in four styles: hydraulic flat tappet, hydraulic roller tappet, mechanical roller tappet, and mechanical flat tappet. These cams are ideal for the performance demands of the dragstrip, as well as street, strip, Circle Track, and other applications. Over a hundred models are available; choose the camshaft designed for your vehicle and engine family.

Product Attributes
BrandCOMP Cams
Manufacturer's Part Number12-872-11
Part TypeCamshafts
Product LineCOMP Cams Drag Race Camshafts
UPC036584265498
Cam StyleHydraulic roller, Retro-fit
Camshaft UseDrag race
Basic Operating RPM Range4,200-7,200
Intake Duration at 050 inch Lift267
Exhaust Duration at 050 inch Lift275
Duration at 050 inch Lift267 int./275 exh.
Advertised Intake Duration321
Advertised Exhaust Duration329
Advertised Duration321 int./329 exh.
Intake Valve Lift with Factory Rocker Arm Ratio0.600 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio0.600 in.
Valve Lift with Factory Rocker Arm Ratio0.600 int./0.600 exh.
Camshaft Gear Attachment3-bolt
RemanufacturedNo
Computer-Controlled CompatibleNo
Grind Number321QNHR-8
Valve Springs RequiredYes
QuantitySold individually.

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