[302 LX Eric]

I guess the first question would be what RPM range are you utilizing, or will be using? Trick flow has the following listed on their website:

Track Heat - 1,500 - 6,500
R-Series - 2,500 - 7,250

With a 302/306 motor and even an aggressive N/A cam, I don't know if you would need as much flow as the R-Series provides. FWIW, I just went with a TFS Track Heat Manifold on my 331. I'm heading to the track Friday so I'll be able to give better advice after a few runs. However, I've gotten to put about 50 miles on my new combo (now, 10:1 comp, Track Heat, 75mmTB, Anderson N-41 cam w/1.72 rr) and I can say that it breathes MUCH better up top than it did before (GT-40 intake, 65mm TB, Steeda #19 cam, 9.2:1). I do feel that I lost a little low end torque, but not much at all.

For me, I'm shifting around 6200, so the Track Heat made sense for me and has good flow characteristics, without sacrificing much torque. The R-series, I would suspect, would really hurt a smaller cube motor in the torque department and wouldn't make up enough on peak HP to make it a good choice. Also, I know some guys have complained about the low end power loss on the Holley intakes (even though they make unbelievable top-end power). I think the Holley and the R-series on kind of on the same level.

Just my opinions. I'll be sure to report my results from this Friday's race to let you know my impressions of the TH intake and my new combo.

E