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home > Proflow Cylinder Heads, AirMax-B 185, SB Ford 289, 302, 351W, Aluminium, Bare Cylinder Heads, 61cc Chamber, 185cc Intake Runner, Pair - PFEAHF18560-BARE > Proflow Cylinder Heads, AirMax-B 185, SB Ford 289, 302, 351W, Aluminium, Bare Cylinder Heads, 61cc Chamber, 185cc Intake Runner, Pair - PFEAHF18560-BARE

Proflow Cylinder Heads, AirMax-B 185, SB Ford 289, 302, 351W, Aluminium, Bare Cylinder Heads, 61cc Chamber, 185cc Intake Runner, Pair - PFEAHF18560-BARE

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Proflow Cylinder Heads, AirMax-B 185, SB Ford 289, 302, 351W, Aluminium, Bare Cylinder Heads, 61cc Chamber, 185cc Intake Runner, Pair - PFEAHF18560-BAREPart Number: PFEAHF18560 BARE Proflow Cylinder Heads, AirMax 185, SB Ford 289,3 02, 351W Bare Proflow does not sacrifice quality for a low priceyou get both with our aluminium cylinder heads. The lightweight heads are cast from A 356 aluminium alloy with a large choice of Engine, for SB & BB Chevrolet, LS Chev Holden Ford SB 289 351W, 302,351 Cleveland 2V & 3V & BB FE, and Chrysler SB & BB, phosphorous bronze valve guides, and ductile iron valve seats

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Part Number: PFEAHF18560-BARE

Proflow Cylinder Heads, AirMax 185, SB Ford 289,3 02, 351W Bare

Proflow does not sacrifice quality for a low priceyou get both with our aluminium cylinder heads. The lightweight heads are cast from A-356 aluminium alloy with a large choice of Engine, for SB & BB Chevrolet, LS Chev Holden Ford SB 289-351W, 302,351 Cleveland 2V & 3V & BB FE, and Chrysler SB & BB, phosphorous bronze valve guides, and ductile iron valve seats for use with unleaded gas. They're also end-milled and drilled for accessories. The fully assembled heads have stainless steel valves, High Performance valve springs, 7 degree valve locks, rocker arm studs, and guideplates. Perfect for your Mild or High performance Hot Rod.

Note: We suggest using Proflow Head Bolt Stepped washers part number PFEAHF-HBW. Proflow head bolt insert washers are designed to be used on Ford Windsor cylinder heads in applications where you have 7/16" head bolts being used in 1/2" bolt holes. This stops the head bolt hole distorting on aluminium heads when using 7/16'' bolts on 289 / 302 standard Windsor blocks.

SPECIFICATIONS
Material	A356 Aluminum
Intake Port Volume	185cc
Intake seat size	2.02
Exhaust seat size	1.60
Intake Port Dimension	2.045" H x 1.205" W x 3/8 Radius
Intake Port Location	Stock
Exhaust Port Volume	63cc
Exhaust Port Dimension	1.355" H x 1.360" W
Exhaust Port Location	Stock
Combustion Chamber Size	58cc
Valve Cover Bolt Pattern	Perimeter Bolt
Valve Angle	20°
Valve Spring Pocket Diameter	1.460" O.D
Max Valve Spring Pocket Machining	1.625" O.D
Deck Thickness	.750"
Minimum Bore Diameter	4.000"
Flat Mill	.006" per cc 54cc Max (from 58cc); 68cc Max (from 72cc);
Angle Mill	.009" per cc 48cc Max (from 58cc); 62cc Max (from 72cc)
Note	Angle mills might require a.120" Thick intake gasket.
Minimum Cross Sectional Area	2.025 sq. in.
Spark Plug Dimensions	14mm x.750" w/Gasket Seat
Head Bolt Diameter	1/2"

FEATURES

Stud Mount - Non-Emissions Legal

Combustion Chamber

8mm Bead Lock Intake Valve 2.020" x 4.900" O.A.L.: 11/32 guide is an option

8mm Bead Lock Exhaust Valve 1.600" x 4.950" O.A.L.

Pedastal 8mm Bead Lock Intake Valve 2.020" x 5.080" O.A.L

Pedastal 8mm Bead Lock Exhaust Valve 1.600" x 5.100" O.A.L

Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat,.600" maximum lift, Max RPM 6300-6500 (upgrades available)

7° Manley Steel Retainers 1.245" O.D x.885" I.D x.655" I.D

7° Bead Lock Valve Keepers

3/8" Rocker Studs

5/16" Guide Plates

Viton Valve Seals.600" O.D x.495" I.D

Hardened Valve Spring O.D Locator 1.380" O.D x.570" I.D

Powder Metallurgy Intake Valve Seats 2.131" O.D x 1.680" I.D x.375" Deep

Powder Metallurgy Exhaust Valve Seats 1.650" O.D x 1.350" I.D x.375" Deep

8 mm Bronze Valve Guides.502" O.D x 2.100" O.A.L

Thermactor Air Injector Reducer Bushing (5/8"-11 x 7/16"-14)

RECOMMENDED COMPONENTS
Intake Port Gasket, Fel-Pro #1262
Important	Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit the heads.
Exhaust Port Gasket, Fel-Pro #1415
Head Gasket	302/351W, Fel-Pro #1011-1
SB Ford 1/2" Bolt Head Bolts, ARP #154-3603
SB Ford 1/2" Bolt Head Studs, ARP #254-4503
1/2" Bolt - 7/16" Thread Head Bolts, 289/302W	ARP 254-3708
Head Bolt Washers	Manley

Proflow Cylinder Heads, AirMax-B 185, SB Ford 289, 302, 351W, Aluminium, Bare Cylinder Heads, 61cc Chamber, 185cc Intake Runner, Pair - PFEAHF18560-BARE

Name: Proflow Cylinder Heads, AirMax-B 185, SB Ford 289, 302, 351W, Aluminium, Bare Cylinder Heads, 61cc Chamber, 185cc Intake Runner, Pair - PFEAHF18560-BARE
Brand: www.midwoodautocraft.com
SKU: 4295911762
Price: 515.50 USD
Availability: InStock
Rating: 4.287100000000001 (2278 reviews)