CSP SAVINGS!

CSP2026

COMP Cams 12-473-44 - Camshaft CS 287Qs9 .900 Base

COMP Cams  |  SKU: COMP-12-473-44
Sale price $69599 Regular price $76559

DISCLAIMER: This Item Is Special Ordered, which may have cancellation or return restrictions. Please see our terms and conditions for more information.


PLEASE NOTE: Pictures may be representative of style, rather than the actual product. Read the description for more details.

Description

COMP Cams 12-473-44 - Camshaft CS 287Qs9 .900 Base

4-Pattern 234/244 IB, 236/246 OB Hydraulic Roller Cam for Chevrolet Small Block

Fits '58-'02 262-400 c.i.d. Chevy Small Blocks .900" Camshaft Base Circle for Applications needing additional connecting rod clearance due to "stroker" crankshaft. Best choice for street383 stroker engines with good cylinder heads. Very wide power range 2600+ Stall. Upgraded valve train components and aftermarket cylinder heads required. 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. 4-Pattern Optimize Valve Events Based on Runner Length Increases Area Under the Curve and High RPM Stability.To make the most power from your engine, you need to optimize the air ingested and captured by avoiding valves closing too soon or too late. Any conventional center layout single throttle body or carbureted V8 intake manifold features longer outboard runners and shorter inboard runners, meaning that each valve event should occur at a different moment. COMP Cams 4-Pattern Camshafts are the very first Series of cams designed to accommodate this difference in length and avoid valves closing at the wrong times. NASCAR teams have been using Camshafts designed this way for years, and using lessons learned along with them, COMP Cams has designed a Series of cams that optimizes valve events and features a large increase in both area under the curve and stability at high RPM.

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. Exemption Reason: N/A
C.A.R.B. E.O. Number: N/A
Grind Number: 287QS9
Camshaft Series: 4-Pattern Small Base Circle
Usage: Street/Strip
Cam Type: Hydraulic Roller
Grind Number: 287QS9
Basic Operating RPM Range: 2,400-6,700
Inboard Intake Duration at .050 Inch Lift: 234
Outboard Intake Duration at .050 Inch Lift: 236
Inboard Exhaust Duration at .050 inch Lift: 244
Outboard Exhaust Duration at .050 inch Lift: 246
Advertised Inboard Intake Duration: 287
Advertised Outboard Intake Duration: 289
Advertised Inboard Exhaust Duration: 299
Advertised Outboard Exhaust Duration: 301
Inboard Intake Valve Lift: 0.627
Outboard Intake Valve Lift: 0.63
Inboard Exhaust Valve Lift: 0.614
Outboard Exhaust Valve Lift: 0.618
Lifters Included: No
Valve Springs Required: Yes
Assembly Lubricant Included: No
Camshaft Gear Attachment: 3-Bolt
Camshaft Material: Billet Steel
Lifter Type: Hydraulic Roller
Engine Family: Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
Amazon ASIN: B00CWZW2B6
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. 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 California Certified Vehicles Manufactured Before 1965?: Yes, but must meet tailpipe emission standards for year of vehicle.

What are people saying about CSP?