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Trusted Brand Afr 1040 Sbc Eliminator Angle Plug Cylinder Head, Pair Unlock 85% Savings [geMJ5hDQ]

$93.99 $300.99 -69%

AFR designed these 1040 SBC Eliminator Street Angle Plug Cylinder Heads especially for up to 400 cubic inch Small Block Chevy engines operating up to 6500 RPM. They feature CNC ported combustion chambers as well as intake and exhaust ports, in additi

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Trusted Brand Afr 1040 Sbc Eliminator Angle Plug Cylinder Head, Pair Unlock 85% Savings [geMJ5hDQ]

AFR designed these 1040 SBC Eliminator Street Angle Plug Cylinder Heads especially for up to 400 cubic inch Small Block Chevy engines operating up to 6500 RPM. They feature CNC ported combustion chambers as well as intake and exhaust ports, in addition to a competition 5-angle valve job.

These heads comes fully assembled with ARP rockers studs, PAC Racing springs, viton valve seals in addition to AFR adjustable guide plates. Machined bead valve locks (not stamped), hardened spring cups, as well as one piece 8mm Stainless Steel valves included also.

AFR 1040 SBC Eliminator Cylinder Head Features:

  • Cylinder Head Material: Aluminum
  • Assembled: Yes
  • Spark Plug Style: Angled
  • Combustion Chamber Volume: 65cc
  • Intake Runner Volume: 195cc
  • Exhaust Runner Volume: 64cc
  • Intake Port Shape: Rectangular
  • Intake Port Location: Stock
  • Exhaust Port Shape: Square
  • Exhaust Port Location: Raised .100 in.
  • Valve Angle: 23 Degree
  • Intake Valve Diameter: 2.050 in.
  • Exhaust Valve Diameter: 1.600 in.
  • Maximum Valve Lift: 0.600 in.
  • Camshaft Style: Hydraulic Roller
  • Outside Diameter of Outer Spring: 1.290 in.
  • Valve Spring Pocket Diameter: 1.460 in.
  • Maximum Valve Spring Pocket Machining: 1.750 in.
  • Lock Style: 7 Degree
  • Deck Thickness: 0.750 in.
  • Rocker Stud Size: 3/8-24 in.
  • Guide Plate Pushrod Size: 5/16 in.
  • Retainer Material: Chromoly Steel
  • Valve Cover Mounting Style: Perimeter Bolt
  • CARB EO Numbers: D-250-2
  • Sold as a Pair

Notes: Do NOT machine spring pad any deeper. These heads have a L98 based geometry, and are not compatible with self aligning rocker arms.

Established in 1970 in Valencia, CA, Air Flow Research is a family-owned and operated company building products for the Professional Racing in addition to Street markets. This includes racers, street performance fans, as well as everyone in-between. The Air Flow Research product lineup contains cylinder heads, intake manifolds, and valves in addition to gaskets. Carburetor adapters as well as spacers, lifters, fasteners, and more also available.

What Our Customers Say

February 5, 2026

Absolutely no complaints!

An amazing purchase. Very happy.

- Trenton Y..

February 5, 2026

Absolutely no complaints!

This is a really good purchase.

- Stacie Z..

February 5, 2026

Absolutely no complaints!

This is a really good product.

- Dayna H..

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