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Proflow Cylinder Heads AirMax 200 535HP SB Chev Aluminium Assembled Studs & G/Plates 72cc Chamber Straight Plug 200cc Intake Runner Pair Premium
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Proflow Cylinder Heads AirMax 200 535HP SB Chev Aluminium Assembled Studs & G/Plates 72cc Chamber Straight Plug 200cc Intake Runner Pair Premium

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

SKU: SK1035099-US20260126-092757 Category: Tag:

Description

Proflow Cylinder Heads, AirMax 200,SB Chev Aluminium, Assembled, 72cc Chamber

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. They have 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.

Specifications & Features:
Material A356 Aluminum
Intake Port Volume 200cc
Intake seat size 2.02
Exhaust seat size 1.6
Intake Port Dimension 2.050″ H x 1.250″ W x 5/16° Radius
Intake Port Location Stock
Exhaust Port Volume 72cc
Exhaust Port Dimension 1.450″ H x 1.550″ W
Exhaust Port Location 0.100″ Raised
Combustion Chamber 72cc
Valve Cover Bolt Pattern Perimeter Bolt
Valve Angle 23°
Valve Spring Pocket Diameter 1.460″ O.D
Max Valve Spring Pocket Machining 1.750″ O.D
Warning: Do not machine spring pad any deeper.
Deck Thickness .750″
Minimum Bore Diameter 4.000″
Flat Mill .006″ per cc 60cc Maximum
Angle Mill .009″ per cc 55cc Maximum
Note: Angle mills might require .120 thick intake gasket.
Minimum Cross Sectional Area 1.810 sq. in.
Spark Plug Dimensions 14mm x .750″ w/Gasket Seat
Carb EO# D-250-2
Straight Plug Striaght Plug option
Important: Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit MIC heads.
PAC Racing Spring 1.290″ OD Hydraulic Roller Dual Valve Spring,
140 lbs on seat, .600″ maximum lift, Max RPM 6300-6500
7/16″ Rocker Studs included
5/16″ Guide Plates Adjustable included
Viton Valve Seals
Hardened Valve Spring O.D Locator
Intake Valve Seats 2.200″ O.D x 1.750″ I.D x .375″ Deep
Exhaust Valve Seats 1.696″ O.D x 1.325″ I.D x .305″ Deep

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