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Proflow Cylinder Heads AirMax 185 SB Ford 289 302 351W Aluminum Assembled 7/16 Studs Adj G/Plates 58cc Chamber 185cc Intake Runner Pair New Arrival
Home / Engine / Proflow Cylinder Heads AirMax 185 SB Ford 289 302 351W Aluminum Assembled 7/16 Studs Adj G/Plates 58cc Chamber 185cc Intake Runner Pair New Arrival

Proflow Cylinder Heads AirMax 185 SB Ford 289 302 351W Aluminum Assembled 7/16 Studs Adj G/Plates 58cc Chamber 185cc Intake Runner Pair New Arrival

Original price was: $1,783.95.Current price is: $713.58.

SKU: SK1026265-US20260126-092757 Category: Tag:

Description

Proflow Cylinder Heads, AirMax 185, SB Ford 289, 302, 351W, Assembled

Proflow does not sacrifice quality for a low price–you 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 & Features:
Material A356Aluminum
Intake Port Volume 190cc
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 70cc
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″
Stud Mount – Non-Emissions Legal
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

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