What's the biggest size AFR heads that one could bolt to a "stock" 302?

Rev · 06-15-2004, 05:51 PM

I think the TFTW and the AFR 165's are both a good choice for what you are after. The AFR's are CNC ported the whole length of the runners from the factory. No pocket porting needed, but they cost $200 more. I chose the TFTW heads and did have them pocket ported for another $150. I also put in TrickFlow 1.7 RR's and custom lenth push rods as well as ARP head bolts.. The whole deal with gaskets,etc. was about $1850 I think.

The main reason I ended up choosing the TFTW heads is because they come with 2.02/160 valves and they have a raised valve cover rims allowing me to keep stock height valve covers even with the RR's. (another $150 saved)

You really don't want too big runners for a street driven 302 as the engine needs a certain amount of velocity in the runners to perform well at moderate rpms. The TFTW heads do work well for me. I agonized for weeks deciding between th TFTW and the AFR 165's. I doubt that I could tell the difference in perfomance with either choice.

Rev

06-15-2004, 05:51 PM	#5
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	Heads I think the TFTW and the AFR 165's are both a good choice for what you are after. The AFR's are CNC ported the whole length of the runners from the factory. No pocket porting needed, but they cost $200 more. I chose the TFTW heads and did have them pocket ported for another $150. I also put in TrickFlow 1.7 RR's and custom lenth push rods as well as ARP head bolts.. The whole deal with gaskets,etc. was about $1850 I think. The main reason I ended up choosing the TFTW heads is because they come with 2.02/160 valves and they have a raised valve cover rims allowing me to keep stock height valve covers even with the RR's. (another $150 saved) You really don't want too big runners for a street driven 302 as the engine needs a certain amount of velocity in the runners to perform well at moderate rpms. The TFTW heads do work well for me. I agonized for weeks deciding between th TFTW and the AFR 165's. I doubt that I could tell the difference in perfomance with either choice. Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe

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