AFR 1531 - LS Chevy 215cc LSX Mongoose Street/Strip Aluminum Cylinder Heads-Pair
This is an unassembled bare cylinder head with valve guides and valve seats installed only.
Does NOT include any parts such as valves, springs, spring components, studs or guide plates.
|LS1/LS2/LS6 Chevy 215cc LSX Mongoose Basic Package Components|
|100% CNC Ported Combustion Chambers|
|100% CNC Ported Exhaust Ports|
|100% CNC Ported Intake Ports|
|Competition 5-Angle Valve Job|
|Intake Valve Size - 2.020'' (Valve not included)|
|Exhaust Valve Size - 1.600'' (Valve not included)|
|Hardened Spring Cups|
|Intake Valve Seats|
|Exhaust Valve Seats|
|Bronze Valve Guides|
|LS1/LS2/LS6 Chevy 215cc LSX Mongoose Street/Strip Head Specifications|
|Head Torque w/Moly Lube||11mm ARP 70 Ft. Lbs. / 8mm 23 Ft. Lbs.|
|Intake Port Volume||215cc|
|Exhaust Port Volume||86cc|
|Exhaust Port Gasket||Fel Pro 375-1440|
|Head Gasket||Fel Pro 375-1041 |
|Head Bolts & Studs||Standard ARP|
|Head Bolt Washers||Standard ARP|
|Shaft Mount Rocker Arms||Yella Terra Ultralite p/n 033-6038|
|Suggested Manifold||LS6 or FAST p/n 244-54039B|
|Spark Plug Starting Range||AC 41-974 Platinum|
|Spring Pocket can be cut to 1.525, no deeper.|
|Flat Mill||.006'' per cc|
In keeping up with GM's trend of larger bore sizes and increased displacement, AFR offers this 215cc LS1/LS2/LS6 version of this ever popular Gen III product line which is aimed specifically to maximize 4.000'' bore combinations, 364 - 408ci. However this head is very versatile and could also be considered for aggressive 346 applications. The 215cc head should also be a prime consideration in larger stroker motors as well around 415-430ci, if the focus of the build is more aimed at enhancing street performance than all out strip performance (where AFR's 230 or 240cc offerings potentially make more sense). This is a very effective design offering serious velocity while still being able to provide a significant volume of airflow enough to generate well over 600hp at the crank. This head will also work well on any forced induction or nitrous applications from 346-408ci; larger engines should look to the 230cc offering. Note that the AFR 215cc requires a minimum head gasket bore of 4.135'' regardless of bore size and is a direct bolt on requiring no special parts. It of course comes equipped with AFR's trademark 3/4'' thick deck and thicker port and combustion chamber surfaces as well. Made in USA.
Installation Notes: 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.
Hydraulic roller cams in ''LS'' Gen III engines typcially experience valve float at 6600-6800 RPM's. If you are using aftermarket rocker arms, plan on running over .600'' gross valve lift, or if you are revving beyond 6600 RPM valve float will become prominent. AFR suggests you upgrade your springs to AFR p/n 033-8019. This upgrade spring has higher seat and open pressures (155/410+) to better reduce the risk of valve float in more aggressive applications.