The first trip to Westech's dyno saw the 406 equipped for max torque with an Arizona Speed & Marine-modified TPI-style intake and two-bbl throttle body. This combination made almost 500 lb-ft of torque at 3,000 rpm! HORSEPOWER HEAVEN With modified Dart single-plane intake manifold, 1,000-cfm four-bbl throttle body, F.A.S.T. ECU, and 36 lb-hr injectors RPM TQ HP 3,000 438 250 3,200 436 266 3,400 443 287 3,600 452 310 3,800 454 328 4,000 457 348 4,200 464 371 4,400 481 403 4,600 484 424 4,800 486 444 5,000 479 456 5,200 472 467 5,400 461 474 5,600 438 467 AVG: 460 382 MAX TQ: 487 @ 4,700 MAX HP: 475 @ 5,600 The graph below represents both engine combinations tested. The one listed as “F.A.S.T. HP and F.A.S.T. TQ” are the high- horsepower packages, while the“ACCEL HP and ACCEL TQ” are the high-torque combination. The second trip to the dyno saw a lot more horsepower with a new 1,000-cfm four-bbl throttle body on top of a modified single-plane Dart intake manifold with 36 lb-hr injectors. Without any other changes, the engine picked up almost 60 hp and lost only 5 lb-ft of peak torque with this combo, although the torque peak did move up 1,700 rpm.The second trip to the dyno saw a lot more horsepower with a new 1,000-cfm four-bbl thrott Westech owner and EFI tuner John Baechtel got everything programmed correctly for start up. Once the engine was fired, yours truly took over the fuel and spark mixture tuning to squeeze out every last ounce of power that could be found.Westech owner and EFI tuner John Baechtel got everything programmed correctly for start up Westech used full-length Sprint Car-style headers with mufflers for this test because the engine's owner didn't want to drill holes in his headers for the Exhaust Gas Temperature probes. All EFI systems of this type also need to run an O2 sensor, which can be seen at the bottom of the photo.Westech used full-length Sprint Car-style headers with mufflers for this test because the SOURCES Arizona Speed & Marine (Asm) 6313 W. Commonwealth Ave. Chandler AZ 85226 Lirones Motorsports 7616 Foothill Blvd. Tujunga CA 91042 COMP Cams Westech Performance Group 11098 Venture Dr., Unit C Mira Loma CA 91752 9-09/-685-4767 www.westechperformance.com MSD Ignition El Paso TX 9-15/-857-5200 msdignition.com FUEL, AIR, SPARK, TECHNOLOGY (F.A.S.T.) 151 Industrial Dr., Dept. SC Ashland, MS 38603 Air Flow Research (AFR) Valencia CA N/A www.airflowresearch.com JE Pistons « | 1 | 2 | 3 | View Full Article By Mike Petralia Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!
