You're off the corner and 3/4's of the way down the backstretch. The tachometers climbing.....you look over and smile. You have the WEAPON 4412.
If you race with a 4412 two-barrel, we have the weapon of choice. Custom calibrated this two-barrel will even stand up to a roller-cam equipped engine. This mod level has yet to fail a tech inspection. This design makes serious power with no obvious modifications.
$520.00. Customer supplied units modified for $349.95
Actual Weapon 4412 Dyno Results
| RPM |
T
Lb-Ft |
HP |
A1
cfm |
| 3750 |
375 |
268 |
358 |
| 4000 |
376 |
286 |
393 |
| 4250 |
373 |
302 |
420 |
| 4500 |
365 |
312 |
449 |
| 4750 |
366 |
331 |
472 |
| 5000 |
362 |
344 |
434 |
| 5250 |
349 |
343 |
510 |
| 5500 |
335 |
351 |
525 |
| 5750 |
323 |
353 |
542 |
Stock Holley 4412 Dyno Results
| RPM |
T
Lb-Ft |
HP |
A1
cfm |
| 3750 |
377 |
269 |
351 |
| 4000 |
379 |
289 |
392 |
| 4250 |
377 |
305 |
412 |
| 4500 |
369 |
317 |
437 |
| 4750 |
361 |
327 |
460 |
| 5000 |
349 |
332 |
478 |
| 5250 |
298 |
298 |
491 |
| 5500 |
278 |
291 |
505 |
| 5750 |
261 |
286 |
516 |
***We are a Florida based LLC. A 6.5% sales tax will be added to all Florida sales. Copyright © 2009 Pro-Systems One, LLC.. All Rights Reserved.
