Part Number: PFEM2921-BK-HEADS

Proflow Cylinder Heads & Intake Manifold Kit

Kit Includes Proflow Aluminium Cyl Heads,  Proflow Intake Manifold, Valve Covers , Intake Gaskets , Intake Bolts 

Proflow Cylinder Heads do 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.

Specifications:

• Material:  A356 Aluminium
• Combustion Chamber:  58cc
• Intake Port Volume:  205cc
• Intake Port Dimension:  2.13" x 1.28"
• Exhaust Port Volume:  71cc
• Exhaust Port Dimension:  1.40" H x 1.40" W
• Exhaust Port Location:  Raised .250"
• Spark Plug Location:  OEM
• Intake Valve Dimensions:  2.08" x 5.00" x 8mm
• Exhaust Valve Diameter:  1.60"
• Valve Stem Diameter:  8mm
• Valve Spring Diameter: 1.575" (40mm)
• Maximum Valve Lift: 0.710" @ 490lbs
• Spring Installed Height: 2.04" @ 146lbs
• Valve Spring Pocket I.D.:  1.64"
• Valve Guide Material:  Manganese Bronze
• Valve Guide O.D.:  .490" (.560"at base)
• Rocker Stud Thread Size: 7/16" x 14
• Valve Angle:  20°
• Deck Thickness:  .750"

Proflow's single-plane Max Jnr Intake manifolds are very versatile and can be used for drag racing and Oval Track competition, as well as for street applications. Power bands range from 3,500 to 7,000 rpm, on up to 4,500 to 8,000 rpm. There are applications for small block and big block engines, as well as for 2-barrel and 4-barrel carburetors.

Proflow Cast Valve Cover's What's a high performance Ford without a set of Proflow Chev or Ford Logo valve covers. These are Tall Cast aluminium black powder coat finish. The valve covers are available in a variety of styles with an array of logos that are sure to add an individual touch to your engine.

Felpro Intake Gasket : Fel-1262

ARP Intake Bolt Kit :  ARP-154-2001