AFR Cylinder Heads

Custom Piston Worksheet & Order Form (pdf)

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AFR Cylinder Heads_Chevrolet_LS1_15°_210cc_Enforcer_64cc_3.900 Bore_Assembled

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Price $659.00

Product Code: AFR-1501

Description

Technical Specs

The all new AFR 210cc Enforcer Cylinder Heads for LS1, are a permanent mold casting featuring an “As‐Cast” surface on the intake runners, exhaust runners and combustion chambers. This budget friendly offering is available as a “No Parts” head or can be ordered fully assembled with the same great components found in higher end cylinder heads; including PAC Racing springs, Viton valve seals, hardened spring cups, ductile Iron seats, machined locks and AFR Stainless Steel valves. Sold as a single piece, 2 pieces required per engine.

210cc CNC Ported Intake Runners
A356 Aluminum
8mm Bronze Valve guides
3 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-1501
Vendor	Air Flow Research
Product Type	Cylinder Heads
Product Model	Enforcer
Engine Family	Chevrolet LSx 15°
Weight	30

Included Components

Combustion Chamber	As Cast
Intake Ports	As Cast
Exhaust Ports	As Cast
Valve Job	3 Angle
Intake Valves	8mm Bead Lock Intake Valve - 2.020 x 4.900 Overall Length
Exhaust Valves	8mm Bead Lock Intake Valve - 1.600 x 4.900 Overall Length
Valve Springs	PAC Racing Spring - 1.290 OD - Hydraulic Roller Dual Valve Spring - 140 lbs on seat - .600 maximum lift - 6,300-6,500 Max RPM
Retainers	7° Titanium - 1.245 O.D x .885 I.D x .655 I.D
Keepers	7° Bead Lock
Rocker Studs
Guide Plates
Valve Seals	.620 OD x .490 ID
Spring Seat Cups	1.380 OD x .570 ID - Hardened
Intake Valve Seat	Ductile Iron
Exhaust Valve Seat	Ductile Iron
Valve Guides	8 mm Bronze

Recommended Components

Intake Gasket	GM or Fast
Exhaust Gasket	GM 12558573
Head Gasket	GM LS2
Head Bolts	AFR 6330 (97-03) or AFR 6334 (04 up)
Head Studs	AFR 6331 (97-03) or AFR 6335 (04 up)
Head Bolt Washers	Manley
Stud Girdle
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	3.190 Height x 1.015 Width - 5/16 Top Radius - 3/8 Bottom
Intake Port Location	Stock
Exhaust Port Volume	82cc
Exhaust Port Dimension	1.400 Height x 1.660 Width
Exhaust Port Location	Stock
Combustion Chamber Volume	64cc
Valve Cover Bolt Pattern	Center Bolt
Valve Angle	15°
Valve Spring Pocket Diameter	1.500 OD
Max Valve Spring Pocket Machining	1.500 OD
Deck Thickness	.425
Minimum Bore Diameter	3.900
Flat Mill	.006 per cc 58cc Maximum
Angle Mill
Minimum Cross Sectional Area
Spark Plug Dimensions	14mm x .750 w/Tapered Seat
CARB EO Number

Flow Chart

Flow Data: cfm @ 28 inches of Water

Lift	.200	.300	.400	.500	.550	.600
Intake	148	209	253	265	268	268
Exhaust	105	150	180	199	204	207

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Cylinder Heads > Air Flow Research Cylinder Heads > Chevrolet - LS Series > Chevrolet - LSx - Cathedral Port - Enforcer Series