AFR 3650 BBC 290/112CC OVAL PORT CNC .710 SOLID ROLLER WITH STUDS & GUIDE PLATES

Regular price $ 3,248.94

CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS. 

Our 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.

290cc Aluminum BBC Cylinder Heads
Part # Description Combustion Chamber
3640 Fully CNC Ported - Hydraulic Roller 112cc
3650 Fully CNC Ported - Solid Roller 112cc

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290cc BBC
  .200 .300 .400 .500 .550 .600 .650 .700
Int 163 235 289 330 346 360 368 375
Exh 135 180 230 262 271 278 286 292

Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.310", 3/4" radius plate exhaust, 1 7/8" curved pipe

Included Components
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
7620
11/32" Nail Head Exhaust Valve, 1.880" x 5.450" Overall Valve Length
7630
PAC Racing Springs#1940 1.550" O.D. Hydraulic Roller Dual Valve Spring, 175 lbs. on seat, .725" maximum lift, 473lbs @ .600 lift, Max RPM 6500-6700
8002
PAC Racing Spring 1.550 O.D. Solid Roller Valve Spring, 220lbs on seat, .710" Maximum Lift, Max RPM 7200-7400 (upgrades available)
8000
Manley 10° Steel Retainers 1.500" O.D x 1.120"I.D x .705" I.D
8511
10° 11/32" Valve Locks with lashcap recess
9005
ARP 7/16" Rocker Exhaust Studs
6406
ARP 7/16" Rocker Intake Studs
6407
Adjustable 3/8" Guide Plates
6109
11/32" Viton Valve Seals
AFR #6610
Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D
8048
Intake Valve Seats 2.450" O.D x 1.950" I.D x .375" Deep
9065
Exhaust Valve Seats 2.000" O.D x 1.580" I.D x .375" Deep
9064
11/32" Intake Bronze Valve Guides .502" O.D x 2.10" O.A.L 9047
11/32" Exhaust Bronze Valve Guides .502" O.D x 2.25" O.A.L
9048
Specifications & Features:
Material
A356 Aluminum
Intake Port Volume
290cc
Intake Port Dimension
2.030"H x 1.830"W x1/2 Radius
Intake Port Location
Stock
Exhaust Port Volume
135cc
Exhaust Port Dimension
1.770"H x 2.010" W
Exhaust Port Location
.375" Raised
Combustion Chamber Size(Full CNC)
112cc
Valve Cover Bolt Pattern
Perimeter Bolt
Valve Angle
24°/4° Int, 15°/4° Exh
Valve Spring Pocket Diameter
1.725" O.D
Max Valve Spring Pocket Machining
1.750" O.D
Deck Thickness
.750"
Minimum Bore Diameter
4.250"
Flat Mill
.006" per cc/ Maximum 102cc
Angle Mill
.009" per cc/ Maximum 97cc
Note:Angle mills might require a .120" Thick intake gasket.
Minimum Cross Sectional Area
2.895 sq. in.
Spark Plug Dimensions
14mm x .750" w/Gasket Seat

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CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.

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Warning: May cause cancer and reproductive harm.