Fuel Injected Small Block - Flexing A Stiff Arm

Building An EFI 406 For The Everyday Drag

Mike Petralia Jun 1, 2003 0 Comment(s)
Sucp_0306_08_z Fuel_injected_small_block Combination 1/11

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.

Sources

Westech Performance Group
Mira Loma, CA
951-685-4767
WestechPerformance.com
Comp Cams
Memphis, TN 38118
800-999-0853
http://www.compcams.com
JE Pistons
Huntington Beach, CA 92649
714-898-9763
www.jepistons.com
Arizona Speed & Marine (Asm)
Chandler, AZ 85226
Lirones Motorsports
Tujunga, CA 91042

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