Part Number:

AFR-3650

AFR Heads, 3650 BBC AFR 290 Oval Port Heads, CNC Ported, 112cc, Solid Roller Springs

AFR, BB Chevy, Aluminum Heads, Intake Runner 290cc, Combustion Chamber 112cc, 2.250 Intake 1.880 Exhaust Valves, CNC Ported with 1.550 Solid Roller Cam Springs, .710 Max Lift, Pair

Special Price $3,647.70 Regular Price $3,780.00

Head Options

Exhaust Upgrade 7634: Inconel Exhaust Valve + $256.00

Optional 4030: Hard Anodize Water Jacket + $453.00

Component Upgrade 8508: 10° Titanium Retainer + $291.00

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⚠ PROP 65 WARNING

⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer. Please contact us to obtain a list of harmful chemicals. For more information, go to www.P65Warnings.ca.gov.

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Description

Air Flow Research medium sized 290cc oval port cylinder head is recommended for moderate street or street/strip big block chevys with displacements up to 509 cubic inches, operating at or below 6500 RPM. Features 100% CNC machined intake runners , exhaust ports and combustion chambers; capable of flowing 375 CFM at 0.700" of lift.

100% CNC Ported Combustion Chambers

100% CNC Ported Exhaust Ports

100% CNC Ported Intake Ports

Competition 5-angle Valve Job

11/32" Intake Valve, 2.250" x 5.500" O.A.L

11/32" Nail Head Exhaust Valve, 1.880" x 5.450" Overall Valve Length

PAC Racing Spring 1.550 O.D. Solid Roller Valve Spring, 220lbs on seat, .710" Maximum Lift, Max RPM 7200-7400

Manley 10° Steel Retainers 1.500" O.D x 1.120"I.D x .705" I.D

10° 11/32" Valve Locks with lash cap recess

ARP 7/16" Rocker Exhaust Studs

ARP 7/16" Rocker Intake Studs

Adjustable 3/8" Guide Plates

11/32" Viton Valve Seals

Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D

Intake Valve Seats 2.450" O.D x 1.950" I.D x .375" Deep

Exhaust Valve Seats 2.000" O.D x 1.580" I.D x .375" Deep

11/32" Intake Bronze Valve Guides .502" O.D x 2.10" O.A.L

11/32" Exhaust Bronze Valve Guides .502" O.D x 2.25" O.A.L

Specifications

More Information
CNC Part Number	AFR-3650
Price	$3,780.00
Sold As	Single
Manufacturer's Part Number	3650
Brands	AFR
Part Types	Cylinder Head
Departments	Parts
Vehicle Make	BB Chevy
Combustion Chamber Size	112cc
Cylinder Head Material	Aluminum
Cylinder Head Style	Assembled
Exhaust Valve Size	1.880
Head Series	Magnum
Intake Runner Size	290cc
Intake Valve Size	2.250
Custom Notices	⚠ PROP 65 WARNING

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