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Airflow Research 1458 205cc Renegade Race Aluminum Cylinder Heads Small Block Ford

Manufacturer

Picture for manufacturer Airflow Research

Part Number

1458
8 reviews
Sale Price

$2,851.41

2 left at this price

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Usually delivered within 2 days

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Product Details

The Airflow Research 1458 Renegade Race cylinder heads represent a complete redesign of AFR's proven 205cc Small Block Ford racing heads, delivering exceptional airflow and performance for serious street/strip applications. These fully assembled aluminum heads feature 100% CNC-ported combustion chambers, intake runners, and exhaust ports for maximum efficiency and consistency.

Key Specifications:

  • 72cc combustion chamber volume
  • 205cc intake runner volume
  • 70cc exhaust runner volume
  • 2.080-inch intake valves with lightweight 8mm stems
  • 1.600-inch exhaust valves
  • AFR's trademark 3/4-inch thick head deck for heavy nitrous or blower applications
  • Exhaust ports raised 0.125 inch higher than stock

Complete Assembly Includes:

  • 3-angle valve job professionally performed
  • 1.550-inch OD roller dual valve springs with damper (210 lbs. seat pressure, 0.670-inch max lift)
  • 10-degree 4140 chrome moly retainers and valve locks
  • 5/16-inch guide plates
  • 7/16-inch rocker studs
  • Valve seals, hardened shims, valve seats, and bronze valve guides

Engineered for 367-427 cubic inch engines operating in the 3,500-8,000 RPM range, these heads flow an impressive 21 CFM more at peak lift compared to previous designs while maintaining superior flow characteristics throughout the lift range. The raised exhaust port design rarely affects header or chassis fitment. Important: The 2.080-inch intake valves require aftermarket pistons notched for valve clearance. Sold as a pair.

Products specifications

Accessory Bolt Holes Drilled

Yes

Calculator

Compression Calculator

CNC-Machined Combustion Chamber

Yes

CNC-Machined Exhaust Runner

Yes

CNC-Machined Intake Runner

Yes

Combustion Chamber Style

Heart

Combustion Chamber Volume (cc)

72

Cylinder Head Finish

Natural

Cylinder Head Material

Aluminum

Cylinder Head Style

Assembled

Damper Spring Included

Yes

Exhaust Port Location

Raised

Exhaust Port Shape

Square

Exhaust Runner Volume (cc)

80cc

Exhaust Valve Angle

20

Exhaust Valve Diameter (in)

1.600 in.

Exhaust Valves Included

Yes

Guideplate Pushrod Size

5/16 in.

Guideplates Included

Yes

Heat Crossover

No

Intake Port Location

Standard

Intake Port Shape

Rectangular

Intake Runner Volume (cc)

225cc

Intake Valve Angle

20

Intake Valve Diameter (in)

2.080 in.

Intake Valves Included

Yes

Lock Style

10 degree

Locks Included

Yes

Machined for O-Ring

No

Maximum Valve Lift (in)

0.710 in.

Notes

Exhaust ports are raised 0.375 in. higher than stock.

Number of Springs Per Valve

Dual

Oiling Style

Through pushrod

Outside Diameter of Outer Spring (in)

1.550 in.

Quantity

Sold as a pair.

Retainer Material

Chromemoly steel

Retainers Included

Yes

Rocker Arm Nut Thread Size

7/16-20 in.

Rocker Arm Nuts Included

No

Rocker Arm Studs Included

Yes

Rocker Arms Included

No

Spark Plug Style

Angle

Steam Holes Drilled

No

Valve Cover Mounting Style

Perimeter bolt

Valve Guide Material

Bronze

Valve Seat Machine Style

3-angle

Valve Seat Material

Ductile iron

Valve Seats Machined

Yes

Valve Stem Seal Style

Viton®

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