BY THE NUMBERS
PERFORMANCE UNLIMITED 358CI SMALL-BLOCK FORD
Bore: 4.030 inches
Stroke: 3.500 inches
Displacement: 358 cubic inches
Compression ratio: 10.48:1
Camshaft: COMP hydraulic, flat tappet
Cam duration: 240/246 degrees
at .050-inch tappet rise
Cam lobe lift: .360/.364 inch
Rocker ratio: COMP Magnum 1.6 ratio
Lobe separation: 108 degrees
Installed centerline: 102 degrees
Top ring: 1.2mm JE
Top ring gap: .020 inch
Second ring: 1.5mm JE
Second ring gap: .022 inch
Oil ring: 3mm JE
Piston: JE, dished top
Block: OEM Ford 351W
Crankshaft: OEM Ford 351W
Rods: Eagle SIR 5.959-inch I-beam
Main journal: 2.620 inches
Main bearing clearance: .0022 inch
Rod journal: 2.070 inches
Rod bearing clearance: .0020 inch
Cylinder head: AFR 205
Peak intake flow: 295 cfm
Intake valve diameter: 2.080 inches
Exhaust valve diameter: 1.600 inches
Intake manifold: Edelbrock Performer RPM
Carburetor: Holley 4150 modified to
1,070 cfm by Charlie Morgan
Header: Mac 1 3/4 Fox-body Windsor;
3-inch collector
Ignition: MSD 6AL
Damper: TCI Rattler
Water pump: Meziere
DTS DYNO DATA
BEST QUALIFYING PULL
RPM TQ HP
2,500 364 173
2,600 374 185
2,700 383 197
2,800 393 210
2,900 404 223
3,000 413 236
3,100 419 247
3,200 423 257
3,300 421 265
3,400 416 270
3,500 411 274
3,600 410 281
3,700 412 290
3,800 418 302
3,900 427 317
4,000 439 334
4,100 451 352
4,200 461 369
4,300 469 384
4,400 477 399
4,500 481 412
4,600 485 425
4,700 486 435
4,800 487 445
4,900 488 455
5,000 487 464
5,100 486 472
5,200 486 481
5,300 484 488
5,400 481 495
5,500 479 502
5,600 477 509
5,700 474 515
5,800 470 519
5,900 466 524
6,000 463 529
6,100 457 531
6,200 451 532
6,300 445 534
6,400 439 535
6,500 433 536
SOURCE
Performance Unlimited
766 Grand Ave
Hartford
WI  53027
www.performanceunlimited.com