Super Chevy
Click here to find out more!

Chevy 350 Small Block Supercharger - Boxing The Power Curve

Our 350 Test Mule Takes A Pounding As Trick Flow Specialties' New Carbureted Supercharger Kit Adds Mountains Of Torque.

By Mike Ficacci, Photography by Mike Ficacci

We left off with our 350 test mule in the July issue, when we rebuilt the bottom end with a rotating assembly from Summit Racing and pumped out a driver-friendly 468hp and 443 lb-ft of torque. We were poised to drop this baby into a first- or second-generation hot rod and make a nice daily driver until Trick Flow Specialties suggested we take out the friendly in "driver friendly" and scare the pants off anyone at the wheel. What we're referring to is Trick Flow Specialties' new carbureted, Roots-style supercharger kit that will bolt right up to our budget small-block.

Trick Flow Specialties' supercharger unit is straight from Magnuson Products and features a 122 high-helix rotor package, which is designed to create more power and torque at a lower rpm than any other unit.

At this point, our small-block is equipped with Trick Flow's 445hp top-end kit, complete with 195cc cylinder heads and fully roller valvetrain. The cam measures 0.558/0.558 and 246/254 degrees of duration. Up top pre-supercharger was an Edelbrock Air Gap intake and a Summit Racing 750cfm carburetor.

Our mission was to simply bolt-on the Magnacharger, leaving the bottom end as is, to simulate exactly what the average gearhead would do. Our biggest fear was the Keith Black hypereutectic pistons that were a perfect match for our non-forced air application. After making some calls for advice from the manufacturer, we decided to shove on and run this baby as is and make insane horsepower. Tuning would be the key to keeping it healthy.

We headed over to B&B Automotive Machine in Lynbrook, New York, slapped on a 950cfm carburetor from Proform, put the pedal to the metal after some minor tweaking, and shocked the heck out of us all as the dyno graph appeared on the computer.

What was the outcome? Get this: 570-plus lb-ft of torque from 2,500 rpm all the way up to 4,500 rpm, a gain of approximately 140 lb-ft through the same rpm range. On the street, this motor is going to act like a completely different animal than it ever would have in N/A trim. At the hit of the throttle from a cruising roll, we expect any sort of street tire to absolutely explode or pin your head hard into the back of the headrest.

We spent a great deal of time tuning to ensure we weren't going to hurt our brave 350ci Mouse motor on 93-octane fuel. We examined at least two spark plugs after every single pull, swapped all eight out at one point for a colder set, checked the roller rocker arms, and watched water and oil temperature constantly. We started the day at 22 degrees of timing and ended at 27 degrees as the motor continued to make power up to that point. Check it out.

TRICK FLOW SPECIALTIES SUPERCHARGED
350 (7 PSI BOOST)
Torque Horsepower  
530 517
  Before   After (10 PSI)
  HP Torque hp Torque
2900        
3000 332 574
3100 343 574
3200 355 576
3300 374 575
3400 386 573
3500 400 575
3600 408 581
3700 420 577
3800 431 577
3900 441 577
4000 321 422 449 576
4100 332 425 461 573
4200 340 425 468 574
4300 355 434 477 569
4400 363 434 484 567
4500 370 432 493 563
4600 384 439 500 561
4700 396 443 504 557
4800 404 442 506 550
4900 412 442 524 541
5000 418 439 528 542
5100 421 431 531 540
5200 432 433 532 532
5300 435 428 539 527
5400 446 429 543 518
5500 446 421 555 515
5600 447 413 549 510
5700 450 409 555 512
5800 450 401 548 498
5900 463 405 546 495
6000 465 394 553 481
6100 465 388 548 472
6200 468 388 547 470
6300 461 376 542 458
6400 455 374 540 450
6500        
  • «
  • |
  • 1
  • |
  • 2
  • |
  • View Full Article
By Mike Ficacci
Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!
Super Chevy