Comp Cams Xtreme Energy Flat Tappet Camshaft 1959-1980 Mopar BB 383-440 R/RB 21-226-4

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SKU:
CLR-COM-21-226-4
UPC:
036584046769

Competition Cams Xtreme Energy Flat Tappet Camshaft

#21-226-4 or 212264

NOTE: You are Purchasing the Camshaft ONLY, All Other Part Numbers Shown Below Are For Reference Purposes Only

Fits:1959-1980 Chrysler/Mopar Big Block 383, 400, 426, 440 V8 R and RB Engines


Cam Style:
Hydraulic flat tappet
Basic Operating RPM Range: 2,800-6,800

Intake Duration at 050 inch Lift: 250
Exhaust Duration at 050 inch Lift: 256
Duration at 050 inch Lift: 250 int./256 exh.
Advertised Intake Duration: 294
Advertised Exhaust Duration: 306
Advertised Duration: 294 int./306 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.519 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.524 in.
Valve Lift with Factory Rocker Arm Ratio: 0.519 int./0.524 exh.
Lobe Separation (degrees): 110
Camshaft Gear Attachment: 1-bolt
Computer-Controlled Compatible: No
Grind Number: CRB XE294H-10
Valve Springs Required: Yes
Quantity: Sold individually.

Notes: Single-bolt camshaft.

 

COMP Cams Xtreme Energy camshafts are built to take advantage of the latest cam technology, to provide maximum performance. Whether your use is off-roading, towing, or street performance, there is an Xtreme Energy cam available for you. By using an aggressive lobe profile, these cams provide better throttle response and more top-end horsepower than equivalent cams from other manufacturers, while delivering increased engine vacuum.

 

Recommended Components:

Component Part Number
Complete K-Kit K21-226-4
Small SK-Kit SK21-226-4 [7]
Cam & Lifter Kit CL-Kit CL21-226-4 [7]
Lifter Kit 822-16 [61] / 867-16 [37]
Timing Set 3204 / 2104
Rocker Arms 1321-16 [23] / 1071-KIT [23]
Valve Springs 925-16 [2] / 26120-16 [2]
Steel Retainers 748-16 / 795-16
Valve Locks 627-16 [26]
Valve Seals 505-16 [2]
Camshaft Break-In Lube 159

 

Installation Notes (These notes apply to the above recommended components with the trailing installation note numbers)
Note Description
2 [2] Requires machining on cylinder heads.
7 [7] Stock springs cannot be used.
23 [23] Includes special shafts & spacers.
26 [26] 1/2 set 2 groove; 1/2 set 4 groove.
37 [37] Adjustable valve train required.
61 [61] Pre 1968 use 824-16 lifters.

 

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