BY THE NUMBERS
TPIS LSX 383
Bore: 4.101 inches
Stroke: 3.625 inches
Displacement: 383 ci
Compression ratio: 11.3:1
Camshaft: Cam Motion solid roller
Valve lift: .707/.680 inch
Duration at .050: 255/262 degrees
Rocker type/ratio: Jesel 1.7:1
Pistons: CP forged
Top ring: Total Seal .032
Second ring: Total Seal .032
Oil ring: Total Seal 3mm
Block: GM LSX
Crank: Callies forged
Rods: Manley forged
Heads: AFR aluminum, CNC 240cc
Intake valve: 2.165 inches
Exhaust valve: 1.60 inches
Intake: Edelbrock Super Victor, port-matched
Throttle body: TPIS 102mm
EFI controller: GM
Wiring harness: Howell Engine Management
Programming: TPIS/LS1 Edit
Headers: American Racing with 1.75-inch primary
Ignition: GM

DYNO DATA
TPIS 383
RPM TQ HP
3,000 443.6 253.4
3,100 444.4 262.3
3,200 438.4 267.1
3,300 429.5 269.9
3,400 417.4 270.2
3,500 399.9 266.5
3,600 387.6 265.7
3,700 389.9 274.7
3,800 399.3 288.9
3,900 415.4 308.4
4,000 433.9 330.4
4,100 448.3 350.0
4,200 462.7 370.0
4,300 473.9 388.0
4,400 484.6 406.0
4,500 491.7 421.3
4,600 496.8 435.2
4,700 501.0 448.2
4,800 506.0 462.2
4,900 510.0 475.9
5,000 514.0 489.5
5,100 517.0 502.0
5,200 520.0 515.0
5,300 524.0 529.0
5,400 525.0 540.0
5,500 526.0 551.0
5,600 525.0 560.0
5,700 523.0 568.0
5,800 520.0 575.0
5,900 517.0 581.0
6,000 514.0 587.0
6,100 511.0 594.0
6,200 508.0 600.0
6,300 506.0 607.0
6,400 501.0 610.0
6,500 496.0 614.0
6,600 493.3 620.0
6,700 488.6 623.0
6,800 483.3 626.0
6,900 477.6 627.0
7,000 471.9 629.0

SOURCE
Air Flow Research
28611 W. Industry Drive
Valencia
CA  91355
661-257-8124
www.airflowresearch.com
Howell Engine Developments
6201 Industrial Way
Marine City
MI  48039
810-765-5100
www.howellefi.com
MagnaFlow Performance Exhaust
22961 Arroyo Vista
Rancho Santa Margarita
CA  92688
800-824-8664
www.magnaflow.com
Callies Performance Products
901 South Union St
Fostoria
OH  44830
419-435-2711
www.callies.com
Comp Cams
3406 Democrat Road
Memphis
TN  38118
800-999-0853
www.compcams.com
Total Seal Inc
22642 North 15th Avenue
Phoenix
AZ  85027
800-874-2753
www.totalseal.com
CP Pistons
1902 Mc Gaw
Irvine
CA  92614
949-567-9000
www.cppistons.com
Meziere Enterprises
220 S. Hale Ave.
Escondido
CA  92029
800-208-1755
www.meziere.com
Jesel Valvetrain Innovation
1985 Cedar Bridge Ave
Lakewood
NJ  08701
732-901-1800
www.jesel.com
Isky Racing Cams
16020 S. Broadway
Gardena
CA  90248
323-770-0930
www.iskycams.com
Manley Performance Products
1960 Swarthmore Avenue
Lakewood
NJ  08701
732-905-3366
www.manleyperformance.com
Cam Motion Inc.
225-926-6110
www.CamMotion.com
American Racing Headers
22 Elm Place
Amityville
NY  11701
855-443-2337
www.americanracingheaders.com
Tuned Port Induction Specialties (TPIS)
952-448-6021
www.TPIS.com
Edelbrock Corporation
2700 California St.
Torrance
CA  90503
310-781-2222
www.edelbrock.com