AFR Cylinder Heads

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AFR Cylinder Heads_Chevrolet_LSx_15° _230cc_65cc_Emissions Legal_ 3.900 Bore_Assembled

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Price $2,956.00

Product Code: AFR-1660

Description

Technical Specs

AFR 230cc LSX heads feature 100% CNC ported intake, exhaust and chambers, A356 aluminum castings, Titanium retainers and high quality components throughout. Recommended for aggressive street or street/strip builds with displacements up to 427 cubic inches, operating up to 7200 RPM. Requires minimum 3.900 bore size for intake valve clearance. AFR heads are available bare (without parts), call our tech line for details.

230cc CNC Ported Intake Runners
A356 Aluminum
8mm Bronze Valve guides
5 angle valve job
Precision CNC machining
Multiple spring options

Assembled heads feature:

8mm Bead Lock Valves
PAC Racing Valve Springs
7° Titanium Retainers
LS1 Type 7° bead locks

www.P65Warnings.ca.gov

Description
Item Code	AFR-1660
Vendor	Air Flow Research
Product Type	Cylinder Heads
Product Model	Mongoose
Engine Family	Chevrolet LSx 15°
Weight	64

Included Components

Combustion Chamber	100% CNC Ported
Intake Ports	100% CNC Ported
Exhaust Ports	100% CNC Ported
Valve Job	Competition 5 Angle
Intake Valves	8mm Bead Lock Intake Valve - 2.080 x 4.900 Overall Length
Exhaust Valves	8mm Bead Lock Intake Valve - 1.600 x 4.900 Overall Length
Valve Springs	PAC Racing Spring - 1.270 OD - Hydraulic Roller Dual Valve Spring - 155 lbs on seat - .650 maximum lift - 7000-7200 Max RPM
Retainers	7° Manley Chrome Moly - 1.245 O.D x .885 I.D x .655 I.D
Keepers	7° Bead Lock
Rocker Studs
Guide Plates
Valve Seals	.600 OD x .495 ID
Spring Seat Cups	1.380 OD x .570 ID - Hardened
Intake Valve Seat	Ductile Iron - 2.131 OD x 1.680 ID x .375 Deep
Exhaust Valve Seat	Ductile Iron - 1.650 OD x 1.350 ID x .375 Deep
Valve Guides	8 mm Bronze - .502 OD x 2.100 Overall Length

Recommended Components

Intake Gasket	GM or FAST
Exhaust Gasket	GM 12558573
Head Gasket	Cometic 3.930 x .040
Head Bolts	ARP 134-3609 (97-03) or 134-3610 (04 up)
Head Studs	ARP 234-4110 (97-03) or 234-4317 (04 up)
Head Bolt Washers	Manley
Stud Girdle	AFR 6200
Intake Manifold	FAST 90, 92 or 102mm
Spark Plug Starting Range	NGK TR55

Specifications and Features

Material	A356 Aluminum
Intake Port Volume	210cc
Intake Port Dimension	3.250 Height x 1.115 Width - 5/16 Top Radius - 3/8 Bottom
Intake Port Location	Stock
Exhaust Port Volume	86cc
Exhaust Port Dimension	1.385 Height x 1.695 Width
Exhaust Port Location	Stock
Combustion Chamber Volume	65cc
Valve Cover Bolt Pattern	Center Bolt
Valve Angle	15°
Valve Spring Pocket Diameter	1.510 OD
Max Valve Spring Pocket Machining	1.525 OD
Deck Thickness	.750
Minimum Bore Diameter	3.900
Flat Mill	.006 per cc 58cc Maximum
Angle Mill
Minimum Cross Sectional Area	2.425 sq in
Spark Plug Dimensions	14mm x .750 w/Tapered Seat
CARB EO Number	D-250-4

Flow Chart

Flow Data: cfm @ 28 inches of Water

Lift	.200	.300	.400	.500	.550	.600
Intake	157	224	272	311	320	324
Exhaust	129	183	225	244	248	252

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