SEMCO Performance
Austintown, OH
409ci Pontiac

On The Dyno & Best Qualifying Pull
RPM: TQ: HP:
3,000 485 277
3,100 501 295
3,200 512 312
3,300 521 327
3,400 527 341
3,500 533 355
3,600 541 371
3,700 552 389
3,800 561 406
3,900 568 422
4,000 577 440
4,100 585 457
4,200 592 474
4,300 597 489
4,400 599 502
4,500 598 513
4,600 599 524
4,700 598 535
4,800 601 549
4,900 602 562
5,000 603 575
5,100 604 586
5,200 604 598
5,300 603 608
5,400 600 617
5,500 595 623
5,600 589 628
5,700 583 633
5,800 577 637
5,900 570 640
6,000 563 643
6,100 554 644
6,200 546 644
6,300 536 643
6,400 524 638
6,500 510 631
6,600 496 624
6,700 479 611
6,800 464 601
6,900 450 591
7,000 446 595

Qualifying score: 2,643.8
Team leader & members: Michael Semchee, Ray Clayton, John Albert, Bruno Jacobs, Kevin Semchee, Tom Kingsbury
Engine type: Pontiac
Claimed displacement: 409 ci
Block: Pontiac
Bore x stroke: 4.165 x 3.750
Compression ratio: 11.45:1
Compression height: 1.00
Crankshaft: Lunati/Pontiac
Engine bearings: MAHLE Clevite
Connecting rod: Eagle, 6.625
Connecting rod bearings: MAHLE Clevite
Pistons & rings: Wiseco
Compression & 2nd ring: .043, .043
Camshaft: Bullet Racing Cams
Cam duration at .050: 240/248
Valve lift: .685/.650
Head gasket: Fel-Pro, .040
Cylinder heads: Kauffman Racing Equipment
Valves (in/ex): Ferrea 2.250/1.750
Valve lifters: Scorpion
Pushrods: Trend Performance
Rocker arms: COMP Cams, Crower, 1.7/1.65
Engine gasket set: Fel-Pro
Intake manifold: Edelbrock
Carb: Holley prepped by Lonestar
Carb spacer: Simeon Racing
Ignition system: MSD Performance
Spark plugs & wires: NGK, MSD Performance
Fasteners: ARP
Flywheel: 10,000 RPM
Engine damper: Innovators West
Water pump: Meziere
Headers: CHE 1.785
Valve covers: Kauffman Racing Equipment
AMSOIL oil viscosity: 10w40
Oil pump: Melling
Oil pan: Stef’s Performance Products
Mufflers: Flowmaster


Racing Engine Design
Fort Collins, CO
417ci Chevy LS

On The Dyno & Best Qualifying Pull
RPM: TQ: HP:
3,000 501 286
3,100 492 291
3,200 485 296
3,300 492 309
3,400 506 328
3,500 522 348
3,600 537 368
3,700 551 388
3,800 561 406
3,900 565 420
4,000 564 430
4,100 558 436
4,200 559 447
4,300 570 466
4,400 584 489
4,500 595 510
4,600 605 530
4,700 612 548
4,800 615 562
4,900 615 574
5,000 613 584
5,100 611 593
5,200 609 603
5,300 607 613
5,400 605 622
5,500 604 632
5,600 600 640
5,700 596 647
5,800 591 653
5,900 586 658
6,000 580 662
6,100 573 666
6,200 567 669
6,300 560 672
6,400 554 675
6,500 546 675
6,600 536 674
6,700 525 670
6,800 511 662
6,900 494 649
7,000 480 640

Qualifying score: 2,630.7
Team leader & members: Brett Bowers, Rick Marquez, Lukas Timmerman, Jason Gonzalez, Ahmed Malik
Engine type: Chevy LS
Claimed displacement: 417ci
Block: Chevrolet
Bore x stroke: 4.072 x 4.00
Compression ratio: 11.5:1
Compression height: 1.100
Crankshaft: Eagle
Engine bearings: MAHLE Clevite
Connecting rod: Eagle, 6.125
Connecting rod bearings: MAHLE Clevite
Pistons & rings: MAHLE, Total Seal
Compression & 2nd ring: 1.5, 1.5
Camshaft: Bullet Racing Cams
Cam duration at .050: 232/232
Valve lift: .725/.725
Head gasket: Cometic
Cylinder heads: Mast Motorsports
Valves (in/ex): Mast Motorsports, 2.250/1.570
Valve lifters: COMP Cams
Pushrods: Engine Pro Racing
Rocker arms: Scorpion, 1.8
Engine gasket set: Fel-Pro
Intake manifold: Holley
EFI ECU: Holley Dominator EFI
Injectors: 48 lb/hr
Throttle body: Accufab
Ignition system: MSD Performance
Spark plugs & wires: Champion, MSD Performance
Fasteners: ARP
Flywheel: PRW
Engine damper: Innovators West
Water pump: Meziere
Headers: Schoenfeld
Valve covers: R.E.D.
Hoses & fittings: Red Horse
AMSOIL oil viscosity: 10w30
Oil pump: Chevrolet
Oil pan: Chevrolet
Mufflers: Flowmaster