Air Flow Research is proud to announce release of our NEW 4830 Renegade SBF aluminum intake manifold.

• Designed for use on competition SBF engines operating from 3500 to 8000 RPM
• 4150 Carb Flange
• Carburetor pad height 5.430" overall
• Designed for 8.2" Blocks
• Cast in nitrous bosses
• All manifolds are cast and machined in the U.S.A

• AFR LSx, SBF, SBC Bronze Guide, .502" O.D.
• (1 Piece) or (Set of 16)

• AFR adjustable guide plates
• Replacement guide plate
• (1 Piece) or (Set of 8) (both left and right side)

• Lash cap 8MM
• SBF, SBC, and LSX
• (1 Piece) or (Set of 16)

• 3/8" Rocker Studs +.250 Length, ARP #134-7104
• (1 Piece) or (Set of 16)

• Steel 7 degree Retainer 1.250 O.D.
• Comes standard on SBC/SBF using AFR 8017/8019 springs
• Requires #9007 Bead Lock Keepers
• (1 Piece) or (Set of 16)

• Steel 10 degree Retainer 1.550 O.D.
• Comes standard on BBC, SBC, BBF, & SBF with spring 8000, 8002, 8005, 8016, & 8023
• SBC/SBF require AFR #9009 Bead Lock Keepers
• BBC require AFR #9005 Square Lock Keepers
• BBF require AFR #9010 Bead Lock Keepers
• (1 Piece) or (Set of 16)

• SBC Eliminator Titanium 7 Degree Retainer 1.245 OD x .885 ID x .655 ID
• Upgrade option for SBC/SBF using AFR 8017/8019 springs
• Comes standard on SBC LT Cylinder heads
• Requires #9007 Bead Lock Keepers
• (1 Piece) or (Set of 16)

• Titanium 10 degree Retainer 1.500 O.D.
• Upgrade option for BBC, SBC, BBF, & SBF with spring 8000, 8002, 8005, 8016, & 8023
• Comes standard on BBC, SBC, BBF, & SBF with spring 8001
• SBC/SBF require AFR #9009 Bead Lock Keepers
• BBC require AFR #9005 Square Lock Keepers
• BBF require AFR #9010 Bead Lock Keepers
• (1 Piece) or (Set of 16)

• I.D. Spring Seat 1.550 OD x .705 OD x .570 ID
• Fits Springs 8000 & 8001 for SBC/SBF
• (1 Piece) or (Set of 16)

• I.D. Spring Seat 1.550 OD x .730 OD x .570 ID
• Fits Springs 8002 & 8016 for SBC/SBF
• (1 Piece) or (Set of 16)

• O.D. Spring Cup 1.380 OD x 1.300 ID x .570 ID
• Fits 8017 & 8019 spring
• (1 Piece) or (Set of 16)

• I.D. Spring Seat 1.440 OD x .740 OD x .570 ID
• Fits 8020 Spring
• (1 Piece) or (Set of 16)

• PAC Racing Springs
• 1.550” OD Solid Roller Dual Race Spring
• 220 lbs. on seat
• .710” max lift
• Max RPM 7200-7400
• Steel Retainer: 8511
• Titanium Retainer: 8505
• SBC/SBF Valve Lock: 9009
• BBC Valve Lock: 9005
• BBF Valve Lock: 9010
• (1 Piece) or (Set of 16)

• PAC Racing Springs #1225
• 1.550” OD Solid Roller Dual Drag Race Spring
• 250 lbs. on seat
• .800” max lift
• Max RPM 8000-8200
• Titanium Retainer: 8505
• SBC/SBF Valve Lock: 9009
• BBC Valve Lock: 9005
• BBF Valve Lock: 9010
• (1 Piece) or (Set of 16)

• PAC Racing Springs #1940
• Street Hydraulic Roller Spring 1.550 O.D.
• 175 lbs. on seat
• .725” max lift
• Max RPM 6500-6700
• Steel Retainer: 8511
• Titanium Retainer: 8505
• SBC/SBF Valve Lock: 9009
• BBC Valve Lock: 9005
• BBF Valve Lock: 9010
• (1 Piece) or (Set of 16)

AFR's 8016 spring is built for use with solid flat tappet cam shafts operating up to 7200 RPM.

• 1.550” OD Solid Flat Tappet
• 140 lbs. on seat
• .650” max lift
• Max RPM 7200-7400
• Steel Retainer: 8511
• Titanium Retainer: 8505
• SBC/SBF Valve Lock: 9009
• BBC Valve Lock: 9005
• BBF Valve Lock: 9010
• (1 Piece) or (Set of 16)

• Hydraulic Roller Spring 1.290 O.D.
• Premium Grade Chrome Silicon
• 140 lbs. on seat
• .600” max lift
• Max RPM 6300-6500
• SBC/SBF Steel Retainer: 8514
• SBC/SBF Titanium Retainer: 8515
• SBC/SBF Valve Lock: 9007
• LSx Titanium Retainer: 8512
• LSx Valve Lock: 9007
• (1 Piece) or (Set of 16)

• 8019-1 - Contains 1 Spring
• 8019-16 - Contains 16 Springs
• Hydraulic Roller Spring 1.270 O.D.
• Premium Grade Chrome Silicon
• 155 lbs. on seat
• .650” max lift
• Max RPM 7000-7200
• SBC/SBF Steel Retainer: 8514
• SBC/SBF Titanium Retainer: 8515
• SBC/SBF Valve Lock: 9007
• LSx Titanium Retainer: 8512
• LSx Valve Lock: 9007
• (1 Piece) or (Set of 16)

AFR's 8020 spring is designed for use with hydraulic flat tappet cam shafts up to .550" lift.

• 1.437” OD Hydraulic Flat Tappet
• 125 lbs. on seat
• .550” max lift
• Max RPM 6100-6300
• Steel Retainer: 8510
• SBC/SBF Valve Lock: 9009
• (1 Piece) or (Set of 16)

• Solid Roller Dual Valve Spring 1.580 O.D.
• Erson # E 915043
• 235 lbs. on seat
• .730” max lift
• Max RPM 7200-7400
• Steel Retainer: 8511
• Titanium Retainer: 8505
• SBC/SBF Valve Lock: 9009
• BBC Valve Lock: 9005
• BBF Valve Lock: 9010
• (1 Piece) or (Set of 16)

• 7 degree Valve Locks for 8mm stem diameter
• For use with spring AFR 8017 & 8019
• (1 Piece) or (Set of 16)

• 10 degree Valve Locks for 8mm stem diameter
• LSX/SBC/SBF Bead Lock
• (1 Piece) or (Set of 16)

• Replacement SBC, SBF, LSX Viton Rubber Valve Stem Seal
• .530" x 8mm
• (Set of 16)

AFR's 185cc SB Ford Enforcer Cylinder heads feature our Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. In addition, these heads utilize a 1.900” Intake valve and are compatible with OEM piston valve relief. This budget friendly head is perfect for your 302 to 363 Cubic Inch engine operating below 6000 RPM. They come fully assembled with the identical components found in our higher end CNC ported cylinder heads, such as ARP rockers studs, PAC Racing springs, Viton valve seals, AFR adjustable guide plates, machined bead valve locks (not stamped), hardened spring cups and our one-piece 8mm 21 4N Stainless Steel valves. They are available bare and without any parts for the DIY.
 

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe
 

AFR's 185cc SB Ford "Street" cylinder heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for engines from 302-393 cubic inches, operating up to 6000-6500 RPM. Legal for 1995 and older emissions controlled vehicles under CARB EO #D-250-3. Not compatible with OEM pistons.
 

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

AFR's 165cc "Street" cylinder heads are the preferred choice over re-worked factory heads. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout, in addition these are the only AFR heads that are compatible with the OEM piston valve relief. Recommended for street, towing, or street/strip engines with displacements up to 351 cubic inches, operating up to 6000 RPM. Legal for 1995 and older emissions controlled vehicles under CARB EO #D-250-3.
 

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

Air Flow Research, the trusted name in high-performance cylinder heads for over 55 years, proudly offers the AFR Small Block Ford Top End Kit — a complete, precision-matched performance solution for the 302 and 351 Windsor platforms.

At the heart of this system are AFR’s Enforcer 185cc cylinder heads, featuring 2.020"/1.600" valves, precision-machined guides, and 3/8" rocker studs for unmatched reliability and flow consistency. These heads are pre-assembled and dyno-proven to deliver the ideal balance of street drivability and race-ready performance.

Each kit includes everything needed to complete the top end of your engine — intake manifold, gaskets, ARP hardware, polished valve covers, Autolite spark plugs, and all necessary fasteners and seals — ensuring a seamless installation experience and proper component compatibility.

Customers can further personalize their build by selecting from AFR’s proven Stage 1 or Stage 2 camshaft profiles, Morel OE or Link Bar lifter sets, and melonized distributor gear options. This flexibility allows builders to tailor their Windsor combination for anything from refined street manners to aggressive street/strip performance, all within a turnkey AFR-engineered package.

INCLUDED COMPONENTS (Part #3910 Configuration)

AFR Enforcer 185cc Cylinder Heads — 2.020"/1.600", 3/8" Rocker Studs (fully assembled)

SBF Intake Manifold

Intake, Exhaust, and Head Gaskets

ARP ½" Head Bolt Kit

Autolite #3924 Spark Plugs (8)

Valve Cover Gaskets

Polished Tall Valve Covers (Pair)

Guideplates

ARP Intake Manifold Bolts and Washers

12-Point Valve Cover Bolts and Washers

CUSTOMIZATION OPTIONS

• Choice of AFR Stage 1 or Stage 2 Camshaft (Andrews-ground profiles)

• Morel Hydraulic Roller Lifters — OE-Style or Link Bar Design

• Melonized Distributor Gear for steel-core cam compatibility

KEY BENEFITS

• Complete AFR-engineered system for the 302/351W — no guesswork required

• Seamless component integration for maximum reliability and performance

• Excellent throttle response, torque curve, and drivability across configurations

• Dyno-tested combinations validated with AFR Renegade and Enforcer heads

• Designed, assembled, and quality-checked in the USA