COMP Cams Camshaft CB 321Jr-12
COMP Cams Camshaft CB 321Jr-12
A$1,233.81
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.
We accept
Description
BBC - 1965-66 396 c.i.d. models have an oiling groove in the rear journal. The listed part numbered cams will not fit these models, so if you require a Camshaft with the oiling groove, please call us at 1-800-999-0853 or contact us, and we will assist you with placing an order. 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.
Product Overview
Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572
Product Details
| Advertised Exhaust Duration: | 336 |
|---|---|
| Advertised Intake Duration: | 321 |
| Amazon ASIN: | B001O07BAC |
| Assembly Lubricant Included: | No |
| Basic Operating RPM Range: | 5,000-7,500 |
| 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: | Solid Roller |
| Camshaft Gear Attachment: | 3-Bolt |
| Camshaft Material: | Billet Steel |
| Camshaft Series: | Drag Race |
| Description: | Drag Race 284/296 Solid Roller Cam for Chevrolet Big Block 396-454 |
| Engine Family: | Chevrolet 396-454 c.i. 8 Cylinder (1967-1996) |
| Exhaust Duration @ .050 in.: | 298 |
| Exhaust Duration at .050 inch Lift: | 296 |
| Exhaust Duration: | 336-5 |
| Exhaust Valve Lift(in): | 0.748 |
| Exhaust Valve Lift: | 0.748 |
| Grind Number: | 321JR-12 |
| Intake Duration @ .050 in.: | 286 |
| Intake Duration at .050 Inch Lift: | 284 |
| Intake Duration: | 321-4 |
| Intake Valve Lift(in): | 0.748 |
| Intake Valve Lift: | 0.748 |
| Lifter Type: | Solid Roller |
| Lifters Included: | No |
| Lobe Separation: | 112 |
| Part Number: | cca11-740-9 |
| RPM Range: | 5000-13000 |
| Title: | Drag Race 284/296 Solid Roller Cam for Chevrolet Big Block 396-454 |
| Usage: | Strip |
| Valve Springs Required: | Yes |
Application Summary
Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts
Part Type
Engine Camshaft
Specifications
- Product Attributes - Brand
- COMP Cams
- Product Attributes - Manufacturer's Part Number
- 11-740-9
- Product Attributes - Part Type
- Camshafts
- Product Attributes - Product Line
- COMP Cams Drag Race Camshafts
- Product Attributes - UPC
- 036584030300
- Product Attributes - Cam Style
- Solid roller, Retro-fit
- Product Attributes - Camshaft Use
- Drag race
- Product Attributes - Basic Operating RPM Range
- 5,000-7,500
- Product Attributes - Intake Duration at 050 inch Lift
- 286
- Product Attributes - Exhaust Duration at 050 inch Lift
- 298
- Product Attributes - Duration at 050 inch Lift
- 286 int./298 exh.
- Product Attributes - Advertised Intake Duration
- 321
- Product Attributes - Advertised Exhaust Duration
- 336
- Product Attributes - Advertised Duration
- 321 int./336 exh.
- Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
- 0.748 in.
- Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
- 0.748 in.
- Product Attributes - Valve Lift with Factory Rocker Arm Ratio
- 0.748 int./0.748 exh.
- Product Attributes - Lobe Separation (degrees)
- 112
- Product Attributes - Intake Valve Lash
- 0.028 in.
- Product Attributes - Exhaust Valve Lash
- 0.030 in.
- Product Attributes - Remanufactured
- No
- Product Attributes - Computer-Controlled Compatible
- No
- Product Attributes - Grind Number
- CB 321JR-12
- Product Attributes - Valve Springs Required
- Yes
- Product Attributes - Quantity
- Sold individually.
- Product Attributes - Notes
- Requires upgraded gear, thrust button, and wear plate.
Reference Information
| Brand Name/s | Comp Cams |
|---|---|
| StreetFX SKU | cca11-740-9 |
| SFX Item ID | 4118534 |
| Supplier Item Code | 4118534 |
| Manufacturer SKU | 11-740-9 |
| Manufacturer UPC | 36584030300 |
| Alternative References | c10, s10, COM11-740-9, 321Jr-12 |
Brochures
Compatibility
Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts
Loading compatibility information...
Keep shopping
More from Comp Cams
