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GILBERT CHEVROLET - AFR 335CC MAGNUM BIG-BLOCK CHEVROLET CYLINDER HEADS | |
| AFR’s 335cc fully CNC ported magnum big-block Chevrolet cylinder heads. These cylinder heads will work best with a primary operating range of 3000-7000 rpm’s (This range is an average and will vary with engine displacement as well as component selection). The 335cc come standard with AFR’s trademark. Call for prices and more information on these heads. | |||||||||||||
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WEB SITE NAVIGATION INFORMATION | |
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AFR NAVIGATION | |
| Index Page | 195cc SBC Street |
| 335cc BBC Rectangular CNC Ported | 305cc BBC As Cast Torquer |
| AFR Parts & Accessories | 205cc LS1 Mongoose Street |
| 180cc SBC Street | 357cc BBC Rectangular CNC Ported |
| AFR Hydra-Rev Kits | |
| Note: You must call us for prices. GILBERT CHEVROLET will not be posting prices for AFR heads on our web site. | |
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AFR 335CC RECTANGULAR PORT FULLY CNC PORTED MAGNUM BBC HEAD DESCRIPTION | |
| AFR’s Best of Both Solution | |
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Are you looking for big torque and big horsepower number? AFR’s BB Chevy line of medium volume intake runners will provide you with exactly that. The phrase “ having your cake and eating it to” would certainly be appropriate with their moderately sized intake runners producing tremendous flow figures across the entire lift range (Their CNC 335 flows 410 CFM!). These high flow/high velocity ports provide extreme versatility and fill the needs of many applications. From a max-effort high compression 454 to a 605 CID low rpm marine application, either one of these cylinder heads would be a great choice. These heads would also be ideal in a larger cubic inch “ Pro-Street” application with their broad torque range, as well as significant rpm and horsepower capability. These cylinder heads will work best with a primary operating range of 3000-7000 rpm’s (This range is an average and will vary with engine displacement as well as component selection). Both the 325cc and the 335cc come standard with AFR’s trademark .750” thick head deck, reinforced rocker stud bosses, and are equipped with premium one piece stainless steel 2.300” intake valves and 1.880” exhaust valves. Standard combustion chamber volume is 119cc’s on our 325 “As Cast” pieces, while the fully CNC ported 335 version comes with a 121cc chamber. Both are available with an optional 114cc combustion chamber as well. Properly selecting the correct cylinder head for an application depends on a large number of variables. Please consult with one of our sales technicians to assist you in making the best decision for your particular application. Note: Optional stud girdle required for 2° rolled valve angles and 1” longer head bolts needed on four bottom exhaust bolt holes. |
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BASIC PACKAGE COMPONENTS | |
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• Competition 5-angle Valve Job • Intake Valve, 2.300” stainless steel, AFR #7626 • Exhaust Valve, 1.880” stainless steel, AFR #7631 • 1.550” OD Roller Dual Valve Spring with dampener, 240 lbs. on seat, .750” maximum lift, AFR #8003 • 10º Chrome Moly Retainers, AFR #8511 • 10º Chrome Moly Valve Locks, AFR #9005 • Valve Seals, AFR #6611 |
• Hardened Shims, AFR #8044 • Intake Valve Seats, AFR #9062 • Exhaust Valve Seats, AFR #9064 • Bronze Valve Guides Intake, AFR #9045 • Bronze Valve Guides Exhaust, AFR #9046 • Guide Plates, AFR #6109 • 7/16" Exhaust Rocker Stud AFR #6406 • 7/16" Intake Rocker Stud AFR #6407 |
| Note: All Accessory Holes are Predrilled & Tapped! | |
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SPECIFICATIONS, FEATURES, AND SUPPORTING COMPONENTS | |
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• Head Torque 75 Ft. Lbs. • Intake Port Gasket, 1.720” x 2.450” with 1/2” radius AFR #6855 • Exhaust Port Gasket AFR #6858 • Head Gasket 4.370 bore, Fel Pro #1027, AFR #6851 • 4.540 bore, Fel Pro #1017, AFR #6850 • Mark V-VI-up to 4.500 Bore Fel-Pro #17048 or #1047 • Mark V-VI-4.500 to 4.600 Bore Fel-Pro #17049 • Head Bolts & Studs Standard ARP, AFR #6308 & #6307 • Head Bolt Washers Manley, AFR #6320 • Stud Girdle AFR #6210 • Sugg.. Manifold Edelbrock #2907 & #2927, AFR #5500 & #5502 |
• Dart #6200, #6201, #6202 & #6203 • Brodix HVH #2000, #2001, #2005 & #2006 • Spark Plug Starting Range Champion C59C Autolite 3932 • Combustion Chambers 119cc • Spring Pocket can be cut to 1.750, no deeper. • Valve Spacing Standard • Rocker Arms Standard • Valve Angle 24º/4º Intake, 15º/4º Exhaust • Angle Mill (milling available), 102cc Maximum .009” per cc • Flat Mill (milling available), 114cc Maximum .006” per cc |
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HEAD COMBINATION WE HAVE IN STOCK | |
| Part Number | Serial Number | Runner Volume | Combustion Chamber | Plug Type | Qty. | Head Description |
| 2001 | 642 | 335cc | 121cc | Straight | 1 | Fully CNC ported, competition package with parts. Option 8023 Manley highlift spring. |
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