<p> TFC 2V Intake Manifold According to Terry Parker's website, his 2V manifold would only be about 1" taller than the Edlebrock Air Gap that I have now and that one fits without any problems. I have CHI 2V heads and the TFC 2V might be a better choice than the Air Gap for my engine.-JFFR</p><p>I went from the Weiand to the TFC on my AFD 2V heads, and it made a big difference to driving, as well as the on the dyno. The biggest difference was how much extra power/torque it made down low, and the excellent throttle response on the street.-Dion</p><p>Mine was used on cast 2v heads, and it didnt make near enough difference to justify the expense. That much money for maybe a tenth over a $100 swap meet intake isn't cost effective in my world-KidV</p><p>Kostecki engines did a test with closed chamber ported 2V heads and F246 cam. They picked up 35 ft/lbs of torque with the TFC. </p><p>Combo 3.</p><p>The third Combo is the same engine as Combo 2 except with a TFC single plane manifold aboard instead of the trusty Weiand X-cellerator. It seems hard to believe but swapping from one single plane design to another netted 16 hp gain in peak power to 447 hp but look at the average power across the test range - this leaped from 381 to a mighty 415 hp. Peak torque was also up by 5 Ibs/ft to 413 at 5200 rpm. This relatively mild combination yielded a torque curve rivaled only by a serious roller-cammed monster and a stroker engine. What's more, this iron-headed wonder produced excellent mid range power that extended all the way to 6700 rpm - all this with a fairly small solid camshaft too. Combo 3 is a very cost-effective, all-round performer.</p><p>Photo by Dion </p>