AFR's 185cc SB Ford "Street" cylinder heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended …

AFR's 185cc SB Ford Enforcer Cylinder heads feature our Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for …

AFR's 205cc "Competition" cylinder heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for race …

With lightweight 8mm, 2.020 in. intake valves and 1.600 in. exhaust valves, combustion chamber volumes of 58 or 72cc, and 68cc exhaust ports, AFR's 185cc Ford cylinder heads are …

AFR's 185cc SB Ford Enforcer Cylinder heads feature our Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for …

2015年7月22日 · Don't chase a "magic" afr number, just watch the plugs and give the engine what it wants.

2012年8月19日 · Airflow Research's new 165cc Renegade cylinder heads (PN 1399; $1,560) are the latest iteration for the cylinder head giant. "The new SBF program is a clean-sheet deal. …

2012年5月30日 · The AFR has a significant effect on the reaction rate of all fuels and alcohol more so than gasoline. Within the usual range of AFR for economy (lean) and power (rich), the …

2022年1月12日 · Does anyone know if these are decent? They are the only heads I can find available right now. Everything is back ordered for months by Trick flow, AFR, etc. They are …

2010年12月14日 · SBE 351w, tiny little AFR 165s, some OTS hydraulic roller, a Chinee intake and a 750 cfm carbonator made 435/435. The torque “curve” was more of a table. It fell off at …