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Iron-Headed Mopar 318 Magnum Engine- LA Confidential
| 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 |
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