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Click for larger image FYI: LSX bead locks and aftermarket bead locks are not interchangeable. GM made their bead lock radius and depth different. AFR locks are the same as GM LSX.   AFR 245cc LSX Mongoose Strip Heads LS1/2/6 Our Max Effort Cathedral Port Offering AFR is proud to announce the addition of a 245cc LSX head to its industry leading LS1/LS2/LS6 “cathedral” product line. This head is specifically designed for aggressive large displacement 400+ CID combinations (with a 4” bore minimum requirement). AFR’s new 245cc LSX head flows 360 CFM at .650 lift while still retaining stock valve angles, heights, port locations and is a direct bolt on with no special parts required. This head also features a larger, higher flowing exhaust port which reaches 265 CFM at the same .650 lift. They come standard with 8mm lightweight 2.160 intake valves and 1.600 tulip exhaust valves. The other big news is that this head has pushrod tubes that clear 3/8” pushrods in most applications. Note: Hydraulic roller cams in "LS" Gen III engines typcially experience valve float at 6600-6800 RPM's. If you are using aftermarket rocker arms valve float will become prominent and AFR highly recommends upgrading to our #8019 spring. If you plan on running over .600 gross valve lift and/or 6600 RPM, AFR suggests you upgrade your springs to AFR part #8019. Our upgrade spring has higher seat and open pressures (155/410+) to better reduce the risk of valve float in more aggressive applications.

** CLICK HERE NOW for the Absolute LOWEST Pricing on AFR Cylinder Heads! Our prices are so low they won't let us show you online, so click here or call us right now at (603) 378-0090 - you'll be glad you did!)

245cc LS1/LS2/LS6 LSX Mongoose Racing Heads Pairs of Cylinder Heads Complete With Parts and Ready to Install Part # Description Price/Pair 1680 LSX 245cc fully CNC ported, 64cc chambers, Large Bore, complete w/ parts Call/email for lowest price! 1681 LSX 245cc fully CNC ported, 64cc chambers, Large Bore, NO PARTS Call/email for lowest price! 1690 LSX 245cc fully CNC ported, 72cc chambers, Large Bore, complete w/ parts Call/email for lowest price! 1691 LSX 245cc fully CNC ported, 72cc chambers, Large Bore, NO PARTS Call/email for lowest price!

Basic Package Components: 100% CNC Ported Combustion Chambers 100% CNC Ported Exhaust Ports 100% CNC Ported Intake Ports 3-angle Radiused Valve Job AFR #7211 Bead Lock Intake Valve, 2.160" std length AFR #7228 Bead Lock Exhaust Valve, 1.600" std length AFR #8019 1.290" OD Hydraulic Valve Spring with dampener, 135 lbs. on seat, .600: maximum lift AFR #8512 7° 1.250 Titanium Retainers AFR #9007 7° Bead Lock Valve Keepers AFR #6612 Viton Valve Seals AFR #8042 Hardened Spring Cup AFR #9060 Intake Valve Seats AFR #9069 Exhaust Valve Seats AFR #9051 Bronze Valve Guides Specifications, Features, and Supporting Components Head Torque 8mm 23ft. lbs. w/ Moly Head Torque AFR #6859 or GM#12558573 Exhaust Port Gasket Fel-Pro #1440 245cc Intake Port Volume 87cc Exhaust Port Volume AFR #6848 Cometic Head Gasket AFR #6330 6 pt. Head Bolts AFR #6331 6 pt. Head Studs AFR #6332 12 pt. Head Studs AFR #6328 Head Bolt Washers AFR #6329 Head Bolt Washers Jesel or TD Shaft Mount LS6 Suggested Manifold FAST TPIS Suggested Manifold AC 41-974 Platinum Spark Plug Starting Range 64cc or 72cc Combustion Chambers Can be cut 1.570 Spring Pocket Stock Valve Spacing Stock Rocker Arms Stock Valve Angle .006" per cc Flat Mill (milling options available) Note: Milling head deck will affect flow numbers.

Sales/Tech Line: (603) 378-0090 Email: tech@flatlanderracing.com Thank You for visiting Flatlander Racing *All prices on this site are subject to change without notice. Flatlander Racing™ disclaims responsibility for any printing or typographical errors, and does not guarantee that all information is accurate. Home  Policies  SiteMap  Translate  Import Parts  Can't Find Part?  Contact  Order Online