BY THE NUMBERS
323CI SMALL-BLOCK MOPAR
Bore: 3.936-inch
Stroke: 3.315-inch
Displacement: 323 cubic inches
Compression ratio: 10.44:1
Camshaft: COMP solid flat-tappet
Cam duration: 247/247 degrees
at .050-inch tappet rise
Valve lift: .622-/.597-inch
Rocker ratio: Harland Sharp 1.7:1 intake;
Crane 1.6:1 exhaust
Lobe separation: 105 degrees
Intake centerline: 99 degrees
Top ring: .043-inch Speed Pro barrel face
Top ring gap: .018-inch
Second ring: .063 Speed Pro, scraper
Second ring gap: .018-inch
Oil ring: .187-inch
Piston: Diamond dome,
zero cc effective volume
Block: OEM roller 318
Crankshaft: OEM forged 340
Rods: Scat SBC 6.200-inch I-beam
Main journal: 2.490-inch
Main bearing clearance: .0022-inch
Rod Journal: 2.100 inch
Rod bearing clearance: .0022-inch
Cylinder head: Mopar Performance
R/T Magnum
Intake valve diameter: 2.020-inch
Exhaust valve diameter: 1.600-inch
Intake manifold: Professional Products
  dual-plane
Carburetor: RM Competition modified
Holley 950 HP
Header: Hooker 1-5/8-inch primaries
Ignition: MSD 6AL
Damper: Professional Products
Water pump: Professional Products
small-block Chevy

On The Dyno DTS Dyno Data
Performance Crankshaft 323CI Small-Block Mopar

RPM TQ HP
2,500 337 161
2,600 350 173
2,700 357 183
2,800 357 190
2,900 356 196
3,000 351 201
3,100 345 204
3,200 339 207
3,300 343 216
3,400 356 230
3,500 371 247
3,600 385 264
3,700 396 279
3,800 404 292
3,900 410 305
4,000 415 316
4,100 418 327
4,200 420 336
4,300 422 345
4,400 421 353
4,500 420 360
4,600 421 369
4,700 425 380
4,800 426 390
4,900 427 398
5,000 427 407
5,100 427 414
5,200 426 421
5,300 425 428
5,400 423 435
5,500 421 440
5,600 419 446
5,700 417 453
5,800 415 458
5,900 412 462
6,000 407 465
6,100 401 466
6,200 397 469
6,300 393 471
6,400 390 475
6,500 386 477

SOURCE
Performance Crankshaft