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You are here: Home > Cylinder Heads > Air Flow Research Cylinder Heads > Chevrolet - Small Block

Small Block 23° - Standard Port Exhaust _ Small Block 23° - Spread Port Exhaust _ Small Block 23° - LT1/LT4 _ Small Block 23° -Small Bolt Hole




Chevrolet - Small Block 23° - Standard Port Exhaust
AFR ELIMINATOR Series Small Block Chevrolet 23° heads feature 5-AXIS CNC shaped intake and exhaust ports as well as highly modified combustion chambers. All are available in street and competition versions. The 180cc, 190cc and 195cc models are CARB Certified (EO #D-250-2) for vehicle model years 1994 and older. While the 210cc, 220cc, 227cc, 235cc, and 245cc Small Block Chevrolet heads are designed for aggressive, non-emissions compliant, street or race applications. Spread Port or Gen II LT1/LT4 versions are also available. more info
Chevrolet - Small Block 23° - Spread Port Exhaust
AFR ELIMINATOR Series Small Block Chevrolet 23° heads feature 5-AXIS CNC shaped intake and exhaust ports as well as highly modified combustion chambers. The exhaust ports are also spread apart approximately .500 compared to the standard location and feature a Stahl bolt pattern.  All are available in street and competition versions. The 210cc, 220cc, 227cc, 235cc, and 245cc Small Block Chevrolet heads are designed for aggressive, non-emissions compliant, street or race applications. Spread Port or Gen II LT1/LT4 versions are also available. more info
Chevrolet - Small Block 23° - LT1/LT4
Air Flow Research LT1/LT4 Small Block Chevrolet heads are designed for the Gen II reverse cooled Small Block Chevrolet engine from 1992-1997. They feature all the same benefits and quality components as Air Flow Research Gen I Small Block Chevrolet heads.  Additionally they are machined to accept both center bolt and perimeter bolt valve covers. Not compatible with self-aligning rocker arms. more info
Chevrolet - Small Block 23° - Small Bolt Hole
Small head  bolt hole heads are specifically designed for severe endurance, high compression, high  cylinder pressure, alcohol fuel applications. Two head bolts in Small Block Chevy heads are inherently thin with the OEM design. These smaller head bolts add an extra 1/16 inch of material to thin areas increasing the strength of the head. The heads are supplied with four special ARP 3/8 X 7/16 head studs that must be used in this head. AFR small head bolt heads has all the same features and benefits of AFR standard heads. more info
Chevrolet - Small Block 23° - Enforcer Series
AFR 195cc Enforcer Cylinder heads  for the Small Block Chevrolet feature Permanent Mold “as cast” surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. This budget friendly head is perfect for 350 to 400 cubic inch engines operating below 6000 RPM. They come fully assembled with the identical components found in 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, hardened spring cups and ductile iron seats in addition to one piece 8mm 21-4N stainless steel valves. They are available in straight or angle plug or bare if you prefer to set them up in-house. Sold as a single piece, 2 are required per engine. more info