Finished-except for the radiator...
Finished-except for the radiator hose.
According to Dezotell, these cars don't like hot intakes, so we threw two bags of ice on the intake manifold, not to bump up the numbers, but rather to bring the surface temps down to similar levels as the stock one. The extra run time upon initial startup added more heat to the engine when compared to the baseline runs. The ice dropped the runners down to the 90s, and the results were nearly identical-essentially the power curves shifted a bit and average power rose slightly but not significantly. We might have seen more power if we had iced the intake longer, but our goal wasn't to optimize the surface temps, only to bring them down a bit. In the end, we were too hung up on the intake manifold heat as the fuel probably cooled down the air temps considerably once inside the chamber. The air/fuel ratio was rich (read: safe), so the extra fuel was put to good use. As Dezotell said, the heads were the major restriction in this application, and we still picked up power, which made us happy.
There you have it. The TFS Two-Valve intake is ready for action in your warmed-over mod motor. Don't expect to pick up power on a virtually stock engine because this intake isn't meant for that application. It's geared towards the more serious engine with ported heads, a blower, nitrous and such. Bench racing sessions about this intake can now come to an end.
 The alternator is flipped...  The alternator is flipped around so it clears the manifold. TFS was able to equal the runner sizes once the alternator was moved out of the way. Machie also had to shim the TFS-supplied alternator spacer due to the supercharger brackets. It's not a big deal, but keep it in mind if you have a blower. |  We tried to cool down the...  We tried to cool down the intake after we noticed the runner surfaces were too hot. The goal was not to cool the runners to 50 degrees and create false gains. |  Surface temps were dropped...  Surface temps were dropped to approximately 90 degrees to mimic the baseline pulls. After all, the aluminum manifolds retain a lot more heat than the plastic intake. Multiple pulls proved that there were no gains to be found by our cooling methods. |
 Keith Johnson's '00 Mustang...  Keith Johnson's '00 Mustang GT impressed us from its mild look (a pair of gauges and M/T Drag Radials are the only visual upgrades) to its outstanding performance. Here's a graph of Johnson's GT with the stock intake in place. It was enhanced with a TFS upper plenum and BBK 70mm throttle body. Peak power was an impressive 441 and torque readings showed a max of 413 lb-ft. |  We weren't disappointed that...  We weren't disappointed that peak horsepower jumped by only 13 rwhp. Dezotell said this was the first Two-Valve intake manifold to pick up horsepower on an engine with unported heads. He was pleased with the results and said he looked forward to adding a pair of ported heads to this car to try and reach 500 hp with the same amount of boost. |  A comparison between the two...  A comparison between the two graphs shows the curves are almost equal. "The heads are the restriction, not the intake," Dezotell says. If we had better heads, the differences would be like night and day. |