Airflow Research Small Block Ford Aluminum Race Heads
We're AFR's Largest West Coast Stocking Dealer! If you're looking for AFR's ready to ship TODAY please give us an opportunity!
***Redesigned AFR Valvetrain now available!*** AFR's entire line of cylinder heads has been upgraded to LS1 style lightweight valvetrain technology. Current cylinder heads use 8mm valves, small diameter springs and a lightweight retainer package to achieve higher RPM capacity, better valvetrain control and more power! Hydraulic roller spring packages (165 & 185's) now include small diameter lightweight springs that are stronger (135lbs on the seat) and capable of more lift (.600 Max Lift) for no additional charge.
AFR heads entire SBF line is CNC ported from AFR to produce the highest flowing, highest velocity cylinder heads on the market today. AFR pioneered CNC cylinder head porting and was the first company to offer a full line of economically priced cnc ported cylinder heads to the aftermarket.
Today AFR has established the standard for comparision in the SBF head world. The 165 and 185's are benchmarked on 302 and 347 stroker combinations as well as 351 and larger engines looking for a low rpm, torque combination. Argueably the most versatile head today the AFR 205 fits high RPM NA and poer adder 331 and 347's all the way up to 408 and 427 street oriented applications. When a larger head is considered the AFR 225 is the gold standard for inline valve high flowing economical cylinder heads. Easily capable of 600hp in a basic naturally aspirated combination or in excess of 1200hp with a power adder they offer a great value for the small block Ford. Bang for the buck it's hard to find a better flowing, higher performing cylinder head than the 225.
General sizing guidelines:
AFR 165 Heads - Stock 302's - mild 331/347's - Torque 351 applications
AFR 185 Heads - Max effort 302's (piston notching required!), 331/347 strokers, 351's and torque 393-408 applications
AFR 205 Heads - High RPM or power adder 331-347 strokers, 351-427 strokers looking for great torque and efficiency
AFR 225 Heads - Max Effort 347-363's, High RPM 351-440 large cube strokers
We Currently (3/28/2009) have the entire SBF AFR Head line in STOCK: *Note all NEW style valvetrain on all in stock heads*
- AFR SBF 165
- AFR SBF 185 - 1387, 1388, 1420, 1422 All IN STOCK!
- AFR SBF 205 - With Hydraulic or Solid Roller Spring
- AFR SBF 225 - With Hydraulic or Solid Roller Spring
If you're looking for a set of heads call for immediate delivery!
