The head goes on the block...
The head goes on the block without any fitment issues.
We left the pulley sizes identical, so the blower delivers the same amount of airflow to the engine. That would give us a true indication of how much more power these heads make over our CNC-ported stock ones. On the dyno, Mike Dezotell of Dez Racing started conservatively by backing the timing down from 17 degrees to 13 degrees. He was concerned with the higher compression and pump gas. A few dyno pulls and the results were 483 rwhp and 439 rwtq.
"It wants more timing," commented Dez as he fiddled away on the SCT program. He gave it just that and set it at the same 17 degrees as our baseline pull. The result was an outstanding 499 rwhp and 462 rwtq, which work out to gains of 34 rwhp and 33 rwtq over our baseline pulls.
We swapped the Anderson Ford...
We swapped the Anderson Ford Motorsport (AFM) F-42 cams from the stock heads to the TFS heads. The cam caps feature dowels and longer bolts to help with cam stability at high rpm and under side-load. These Trick Flow caps are torqued down to 150 lb/in as compared to 99 lb/in for the stock caps.
Our 499/462 performance was backed up with a near identical 499/461, showing our results weren't bogus. Dez then swapped the program over to one for the Snow kit. He kept the tune identical; we were just increasing timing due to the better octane rating the meth delivers. The same baseline 23 degrees and air/fuel ratio provided us with an additional gain of 15 rwhp and 16 rwtq, for a grand total of 514 rwhp and 477 rwtq.
"That is the most power I have made with a P-1SC supercharged car. Typically, a combo like this with bone stock heads will make 435 rwhp and 465 or so with CNC-ported stock heads. The Trick Flow heads are 60-65 rwhp better than unported stock heads," claimed Dezotell.
Interestingly, the boost remained at 11-12 psi throughout all of the tests, despite the better flowing Twisted Wedge Street/Strip heads. Some might wonder why the boost stayed up, and our best assumption is the increase in compression ratio.
"We are only scratching the surface with these heads. I think larger cams, like the Anderson Ford Motorsport F-72 ones, springs to match, and a better exhaust system will allow us to pull higher rpm levels for even better gains. As we work more with these heads, the more we will know what it likes. I have seven pairs of Trick Flow heads ordered for customers, so we should know soon enough," commented Dez.
For now, simply bolting the Trick Flow Specialties Twisted Wedge Street/Strip Two-Valve heads on top of a mildly supercharged mod motor proved to be worth 34 rwhp. Four-Valve and Three-Valve mod motor combinations are going to have some fast company from its little Two-Valve brother. Let the mod motor games begin!
Flow Bench Notes
- Bore Size: 3.552
- 28 inches of water
- Trick Flow heads feature 1.84/1.45 valves
- Stock Heads feature 1.78/1.45 valves
Trick Flow offers new cam...
Trick Flow offers new cam gears, chains, and guides. We just reused our stock stuff because of the low-mileage. Those who have excessive wear should consider the Trick Flow replacement components when you pull the heads off.
The Snow Performance water/methanol...
The Snow Performance water/methanol injection brought out up to 514 rwhp and 477 rwtq with the Trick Flow heads in place. That is an improvement over our methanol-enhanced baseline of 486 rwhp and 447 rwtq. According to Dez, it is the most power he has seen with a P-1SC blower on a Two-Valve engine.
The long-block is ready to...
The long-block is ready to be re-installed in the '00 Stang's engine bay. Once in the car, the accessories are hooked up, the blower bolted back on, and the AFM Power Pipe attached.
We are ready to dyno! The...
We are ready to dyno! The engine oil was changed and we used Royal Purple synthetic fluid. The spark plugs were replaced with NGK TR6 4177 ones, gapped to 0.035.