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Air Flow Research

Cyl Head, AFR Enforcer, BBC, 335/140cc, 122cc Chamber, Angle Plug, Single Head

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Part# : CH35723

Mfg#: 3001

Sold As: Each

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^$606.⁹⁹

List Price: $668.95

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Color

Color Variation

Due to variations in monitor settings, some colors on this page may appear slightly different from GM originals. In addition, due to color differences in the original GM dye lots, interior product colors may vary slightly.

Fits 1964–1977 Chevelle View fitment for 4 models

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Details
Fitment
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Chevrolet Big Block 335cc Enforcer Head by Air Flow Research®

Permanent-mold A356 Enforcer head uses 335/140cc as-cast ports, 122cc chamber and a 3-angle valve job.

Air Flow Research® 335cc Big Block Chevrolet Enforcer head uses an A356 permanent-mold casting with as-cast 335cc intake runners, 140cc exhaust ports and a 122cc combustion chamber, finished with a 3-angle valve job. It is aimed at 509-540ci combinations operating below about 6500 RPM. Assembled versions use performance valvetrain hardware including PAC Racing springs and ARP rocker studs; a bare version is also available. Sold individually; two are required per engine.

• Air Flow Research® 335cc BBC Enforcer series • A356 permanent-mold aluminum casting • 335cc intake / 140cc exhaust ports • 122cc combustion chamber • 3-angle valve job • Sold individually; two required per engine

Notes

AFR strongly recommends using 7/16" rocker studs on SBC heads with todays fast cam rates and RPM capabilities.
SBC heads with 1.625" O.D springs will require some springs to be removed for access to some head bolts during installation.
SBC heads are designed for 5/16" .120" thick-wall pushrods, larger pushrods will not fit without clearancing. BBC heads are designed for 3/8" .120" thick-wall pushrods, larger pushrods will not fit without clearancing.
For ideal geometry and wipe pattern on BBC heads, AFR strongly recommends AFR stud mount rockers for applications below 7400 RPM and .790 lift. For applications above these limits shaft mount rockers are typically advised.
With some domed aftermarket pistons on BBC applications, it may be necessary to slightly clearance or modify the piston due to more efficient heart shaped combustion chamber designs. Most of the newer designed domed profiles will clear. AFR recommends material be removed from the piston and not the cylinder head. AFR's combustion chamber shapes are very critical to flow and altering the cylinder head can adversely affect flow and power production. It is the customers responsibility to verify proper piston to head clearance.
AFR LS1 heads are only machined for center bolt valve covers.
GM rocker arms are not designed/engineered to accommodate aftermarket cams or higher spring pressures. At a minimum AFR recommends using the Bushing Trunion Kit on their LS1 heads. Without proper parts you will experience accelerated guide wear.
This item is not eligible for any further discounts or promotional pricing.
This item is Oversize 3, and is excluded from free ground shipping.

This product is not legal for street use on an emissions-controlled vehicle. It may be used on dedicated competition or pre-pollution-controlled vehicles only. Learn More

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WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model	Application Details
1964–1977 Chevrolet Chevelle	SBC - 195/76cc INT/EXH, 2.080"/1.380" valves - 122cc chamber, angle plug, assembled, 2 req.
1964–1977 Chevrolet Chevelle	SBC - 195/76cc INT/EXH, 2.080"/1.380" valves - 122cc chamber, angle plug, bare, 2 req.
1964–1987 Chevrolet El Camino	SBC - 195/76cc INT/EXH, 2.080"/1.380" valves - 122cc chamber, angle plug, assembled, 2 req.
	SBC - 195/76cc INT/EXH, 2.080"/1.380" valves - 122cc chamber, angle plug, bare, 2 req.
	SBC - 195/76cc INT/EXH, 2.080"/1.380" valves - 122cc chamber, angle plug, assembled, 2 req.
	SBC - 195/76cc INT/EXH, 2.080"/1.380" valves - 122cc chamber, angle plug, bare, 2 req.
1978–1983 Chevrolet Malibu	SBC - 195/76cc INT/EXH, 2.080"/1.380" valves - 122cc chamber, angle plug, assembled, 2 req.
1978–1983 Chevrolet Malibu	SBC - 195/76cc INT/EXH, 2.080"/1.380" valves - 122cc chamber, angle plug, bare, 2 req.
1970–1988 Chevrolet Monte Carlo	1970–1977: SBC - 195/76cc INT/EXH, 2.080"/1.380" valves - 122cc chamber, angle plug, assembled, 2 req.
	1970–1977: SBC - 195/76cc INT/EXH, 2.080"/1.380" valves - 122cc chamber, angle plug, bare, 2 req.
	SBC - 195/76cc INT/EXH, 2.080"/1.380" valves - 122cc chamber, angle plug, assembled, 2 req.
	SBC - 195/76cc INT/EXH, 2.080"/1.380" valves - 122cc chamber, angle plug, bare, 2 req.

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