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AFR – Airflow Research 3630 – AFR Big Block Chevy 290cc Oval Port Magnum Aluminum Cylinder Heads

AFR – Airflow Research# 3630

290cc Oval Port 24° Magnum Street/Strip Aluminum Cylinder Heads

  • BB-Chevy
  • 113cc Combustion Chambers
  • Bare Head Only
  • Sold in Pairs, 2/pkg.

 

SKU: 3630. Categories: , .

Product Description

AFR – Airflow Research 3630 – AFR Big Block Chevy 290cc Oval Port Magnum Aluminum Cylinder Heads Details

 

 

This is an unassembled bare cylinder head with valve guides and valve seats installed only. Does not include any parts such as valves, springs, spring components, studs or guideplates.

Big Block Chevy 290cc Oval Port 24° Magnum 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 Size – 2.250” (Valve not included)
Exhaust Valve Size – 1.880” (Valve not included)
Intake Valve Seats
Exhaust Valve Seats
Bronze Valve Guides
Big Block Chevy 290cc Oval Port 24° Magnum Street Head Specifications
Head Torque w/Moly Lube 75 Ft. Lbs.
Rocker Stud Torque 55 Ft. Lbs.
Intake Port Gasket Fel-Pro 1212 – DO NOT PORT MATCH Intake Manifold to Fel-Pro Gasket.
Exhaust Port Gasket AFR 6858
Head Gasket 4.540” Bore, Fel Pro 1017
AFR 6850
Head Bolts & Studs Standard ARP
Head Bolt Washers Manley Standard
Stud Girdle AFR 6210
Suggested Manifold Weiand Stealth or Edelbrock Vic Jr. or RPM Performer
Spark Plug Starting Range Autolite 3935
Combustion Chambers 113cc As Cast
Intake Port Volume 290cc As Cast
Exhaust Port Volume N/A
Spring Pocket can be cut to 1.750, no deeper.
Valve Spacing Standard
Rocker Arms Standard
Valve Angle 24° / 4° Intake ; 15° / 4° Exhaust
Angle Mill, 97cc Maximum .009” per cc
Flat Mill, 102cc Maximum .006” per cc
NOTE: Flat and Angle mills might require a .120” thick head gasket.