AIR FLOW RESEARCH
28611 W. Industry Drive
Valencia, California, USA 91355
tel: 877-892-8844
fax:661-257-4462
About AFR Cylinder Heads
For over thirty years Airflow Research has been defining technological leadership in cylinder head manufacturing and flow dynamics. This complete commitment to performance has enabled Airflow Research’s Cylinder heads to find themselves on the fastest race cars and the most powerful street machines in the country. As every engine builder will attest to, the secret to increasing horsepower and performance lies in the cylinder head, and Airflow Research’s cylinder heads outflow and out horsepower everything in their league.
Mission Statement
Our mission is to manufature the highest quality, best performing aluminum cylinder heads while providing customer service that is miles beyond the competition.
205cc LS1 Mongoose Street Head
The Small Port, High Velocity Torque Monster
For the ultimate street LS1/LS2/LS6 aluminum cylinder head AFR’s all new 205cc emission legal cylinder heads E/O #D250-4 are your only choice. Specifically designed for 1997 to present Gen-3 Chevy Corvettes, Camaros, and trucks. AFR’s LS1 head offers unmatched flow performance (298 CFM at .600lift) and features 2.020 intake and 1.600 exhaust valves with AFR’s iron ductile interlocking valve seats. With only 205cc port volume (same as stock LS1 head) this is an incredibly 70 CFM increase over stock casting creating unbeliveable port velocity and performance. The 205cc is ideal for normally aspirated 346C.I. to 396C.I. It is available with 55cc and 76cc combustion chambers. AFR’s LS1 is a direct bolt on, no special parts required. Structural features like Air Flow Research’s trademark 3/4″ thick head deck, a must for blown and nitrous applications, reinforced rocker stud bosses, and thick wall runners provide unparalleled durability. An exclusive new modern combustion chamber design with double quench pad area helps the LS2 generate huge low and mid lift airflow numbers. If you need a snake charmer for that pesky neighborhood “Cobra Mustang” look no further.
205cc Mongoose LS1 Racing Head Part Numbers
CNC Ported Pairs of Cylinder Heads Complete With Parts and Ready to Install
| CNC Street Porting | |
| Description | Part Number |
| 205cc CNC Ported w/parts 66cc | 1510 |
| 205cc CNC Ported w/o parts 66cc | 1520 |
| 200cc As Cast w/o parts 64cc | 1541 |
| Basic Package Components | Part # |
| 100% CNC Ported Combustion Chambers 100% CNC Ported Exhaust Ports 100% CNC Ported Intake Ports 3-angle Radiused Valve Job |
|
| Intake Valve, 2.020″ standard length | AFR #7207 |
| Exhause Valve, 1.600″ standard length | AFR #7228 |
| 1.290″ OD Hydraulic Valve Spring with dampener, 135 lbs on seat, .600 maximum lift | AFR #8017 |
| 7 1.250 Titanium Retainers | AFR #8512 |
| 7 Valve Locks | AFR #9007 |
| Valve Seals | AFR #6612 |
| Spring Cup | AFR #8042 |
| Intake Valve Seats | AFR #9059 |
| Exhaust Valve Seats | AFR #9069 |
| Bronze Valve Guides | AFR #9051 |
All Accessory Holes are Predrilled & Tapped!
|
Specifications, Features, and Supporting Components
|
|
| Head Torque |
11MM ARP 70ft. lbs. w/Moly 8mm 23ft. lbs. w/Moly
|
| Exhaust Port Gasket | GM#12558573/Fel-Pro #1440 AFR #6857 |
| Intake Port Volume | 205cc |
| Intake Valve Size | 2.020 |
| Exhaust Port Volume | 84cc |
| Head Gasket | Fel-Pro #1041, AFR #6847 |
| Cosmetic | AFR #6846 |
| Head Bolts & Studs | Standard ARP, AFR #6330, #6331 & #6332 |
| Head Bolt Washers | Standard ARP, AFR #6328 & #6329 |
| Jesel or TD Shaft Mount | LS6 or FAST, TPIS |
| Spark Plug Starting Range | AC 41-974 Platinum |
| Combustion Chambers | 66cc or 76cc |
| Spring Pocket 1.250 | |
| Valve Spacing | Stock |
| Rocker Arms | Stock |
| Valve Angle | Stock |
| Angle Mill (milling available) | .008″ per cc |
| Flat Mill (milling available) | .006″ per cc |
