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AFR – Airflow Research 1138 – AFR Small Block Chevy 245cc Eliminator NPP Race Aluminum Cylinder Heads

AFR – Airflow Research# 1138

245cc Eliminator NPP Race Aluminum Cylinder Heads

  • SB-Chevy
  • Competition Package CNC Porting
  • 80cc Combustion Chambers
  • Standard Exhaust Port Configuration
  • Angle Spark Plug
  • Assembled
  • Sold in Pairs, 2/pkg.

SKU: 1138. Categories: , .

Product Description

AFR – Airflow Research 1138 – AFR Small Block Chevy 245cc Eliminator NPP Race Aluminum Cylinder Heads Details

Competition Package CNC Porting Eliminator Heads

 

  • Standard Exhaust Port Configuration

 

 

Small Block Chevy 245cc Eliminator Race Basic Package Components

100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-Angle Valve Job
Intake Valve, 2.125” x 5.006” o.a.l.
Exhaust Valve, 1.600” x 5.024” o.a.l.
1.550” OD Solid Roller Dual Valve Spring, 250 lbs. on seat, .800” maximum lift, max RPM 8300-8500
10º Manley 4140 Chrome Moly Retainers
10º Valve Locks
Viton Valve Seals
Hardened Spring Cups
Intake Valve Seats
Exhaust Valve Seats
Bronze Valve Guides
Small Block Chevy 245cc Eliminator Race Head Specifications
Head Torque w/Moly Lube 65-70 Ft. Lbs.
Rocker Stud Torque 55 Ft. Lbs.
Intake Port Gasket, 1.310” x 2.180” w/ 3/8” radius Fel-Pro 1206 – DO NOT PORT MATCH Intake Manifold to Fel-Pro Gasket.
Exhaust Port Gasket Fel Pro 1405
Head Gasket 350ci Fel Pro 1004
400ci Fel Pro 1014
Head Bolts & Studs Standard ARP
Head Bolt Washers Manley Standard
Suggested Manifold AFR 4801, AFR 4802 or Edelbrock Vic Jr 2975 or Super Victor 2925
Spark Plug Starting Range Autolite 3910
Combustion Chambers 80cc
Intake Port 245cc
Exhaust Port 80cc+
Spring Pocket can be cut to 1.680, no deeper.
Valve Spacing 60/40
Shaft Mount Rocker Arms T&D .450” Offset w/.180” Offset Lifter – T&D .550” Offset w/Standard Lifter
Valve Angle 23°
Angle Mill .008” per cc
Flat Mill .006” per cc
NOTE: Flat and Angle mills might require a .120” thick head gasket.