The Most Powerful Standard Racing Head Available! - Information below is referring to fully assembled heads.
These reasonably priced AFR 210cc intake port small block Chevy angle plug cylinder heads are available in two stages of performance. The Race Ready version features 100% CNC ported intakes while the higher flowing Competition version features 100% CNC ported intakes with greater detail and higher flowing exhaust ports as well. Both come with 100% CNC ported 65cc or 75cc combustion chambers and 80cc exhaust ports with a 3/4" thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm 2.080" intake and 1.600" exhaust with AFR's hardened ductile iron interlocking valve seats. The exceptional flow characteristics, 23? valve angle, and standard valve spacing make this the perfect head for 350 to 400 cid engines in bracket drag cars, sportsman oval trackers, and highly modified street class cars operating between 3000 and 7500 rpm (higher rpm ranges possible depending on combination of parts). The 210cc aluminum cylinder heads are available in either standard or spread port exhaust. No special parts are required. Drilling for centerbolt valve covers available as an option.
The exhaust ports are raised .250" over a standard GM L-98 cylinder head.
Note:
2.080 valves will require aftermarket pistons notched for valve clearance.
| Basic Package Components | Part # |
| 100% CNC Ported Combustion Chambers 100% CNC Ported Exhaust Ports 100% CNC Ported Intake Ports Competition 5-angle Valve Job |
| Specifications, Features, and Optional Supporting Components |
| Head Material |
A356 Aluminum |
| Intake Port Volume | 210cc |
| Intake Port Dimension | 2.240" H x 1.310" W 3/8 Radius |
|
Intake Port Location
|
Stock |
| Exhaust Port Volume | 80cc |
| Exhaust Port Dimension | 1.420" H x 1.545" W |
| Exhaust Port Location | .250" Raised |
| Combustion Chamber Size | 65cc or 75cc |
|
Valve Cover Bolt Pattern
|
Perimeter Bolt |
| Valve Angle | 23? |
| Valve Spring Pocket Diameter | 1.580" O.D |
| Max Valve Spring Pocket Machining |
1.750" O.D |
|
Deck Thickness
|
.750" |
| Minimum Bore Diameter | 4.000" |
| Flat Mill | .006" per cc 60cc Maximum |
| Angle Mill | .009" per cc 55cc Maximum |
|
Minimum Cross Sectional Area
|
Race Ready: 2.100 sp in, Comp 2.115 sq. in |
| Note:Angle mills might require a .120" Thick intake gasket. | |
| Spark Plug Dimensions | 14mm x .750" w/Gasket Seat |
|
Intake Gasket, Fel-Pro #1206
|
Street Pkg #6820 |
| Exhaust Port Gasket, Fel-Pro #1405 | AFR #6835 |
| Head Gasket, 350cid Fel-Pro #1003 | Street Pkg #6800 |
|
Head Gasket, 400cid Fel-Pro #1014
|
AFR #6802 |
| SB Chevy Head Bolt Kit, ARP #134-3701 | AFR #6310 |
| SB Chevy Head Stud Kit, 12 Point Nuts, ARP #234-4301 | AFR #6305 |
| Head Bolt Washers, Manley | AFR #6320 |
| Stud Girdle GM L98 | AFR #6200 |
| Suggested Manifold | AFR Titan TXR #4801 |
| Suggested Manifold | AFR Titan TXS #4802 |
| Spark Plug Starting Range | Autolite 3922 |
|
Carb EO#
|
Not Emissions Complient |
