|
|
Dual-Pattern | Group #1 | | | PN | 12-408-8 | | Grind | XR258HR-10 | | Intake valve lift | 0.480 inch | | Exhaust valve lift | 0.487 inch | | Intake duration at 0.050-inch lift | 206 degrees | | Exhaust duration at 0.050-inch lift | 212 degrees | | LSA | 110 | | Intake valve opening | 23 | | Intake valve closing | 55 | | Exhaust valve opening | 66 | | Exhaust valve closing | 18 | | Cranking compression | 220 psi | | Idle vacuum at 900 rpm | 17 inches | | Peak torque | 483 | | Peak horsepower | 416 | | Average torque at 2,500-5,500 rpm | 456 | | Average horspower at 2,500-5,500 rpm | 345 | | RPM | TQ | HP | | 2,500 | 440 | 209 | | 3,000 | 457 | 261 | | 3,500 | 480 | 320 | | 3,800 | 483 | 350 | | 4,000 | 482 | 367 | | 4,500 | 471 | 404 | | 5,000 | 437 | 416 | | 5,500 | 390 | 408 | | 6,000 | N/A | N/A | | 6,300 | N/A | N/A | | Group #2 | | PN | 12-423-8 | | Grind | XR276HR-10 | | Intake valve lift | 0.502 inch | | Exhaust valve lift | 0.510 inch | | Intake duration at 0.050-inch lift | 224 degrees | | Exhaust duration at 0.050-inch lift | 230 degrees | | LSA | 110 | | Intake valve opening | 32 | | Intake valve closing | 64 | | Exhaust valve opening | 75 | | Exhaust valve closing | 27 | | Cranking compression | 225 psi | | Idle vacuum at 900 rpm | 17.5 inches | | Peak torque | 486 | | Peak horsepower | 462 | | Average torque at 2,500-6,000 rpm | 455 | | Average horsepower at 2,500-6,00 0rpm | 368 | | RPM | | TQ | HP | | 2,500 | 422 | 201 | | 3,000 | 437 | 249 | | 3,500 | 472 | 315 | | 4,000 | 484 | 369 | | 4,100 | 486 | 379 | | 4,500 | 484 | 415 | | 5,000 | 470 | 448 | | 5,500 | 441 | 462 | | 6,000 | 397 | 454 | | 6,300 | N/A | N/A | | Group #3 | | PN | 12-443-8 | | Grind | XR294HR-10 | | Intake valve lift | 0.540 inch | | Exhaust valve lift | 0.562 inch | | Intake duration at 0.050-inch lift | 242 degrees | | Exhaust duration at 0.050-inch lift | 248 degrees | | LSA | 110 | | Intake valve opening | 41 | | Intake valve closing | 73 | | Exhaust valve opening | 84 | | Exhaust valve closing | 36 | | Cranking compression | 200 psi | | Idle vacuum at 900 rpm | 7.5 inches | | Peak torque | 508 | | Peak horsepower | 509 | | Average torque at 2,500-6,300 rpm | 467 | | Average horsepower at 2,500-6,300 rpm | 398 | | RPM | TQ | HP | | 2,500 | 397 | 197 | | 3,000 | 411 | 235 | | 3,500 | 465 | 310 | | 4,000 | 498 | 379 | | 4,500 | 508 | 435 | | 5,000 | 501 | 477 | | 5,500 | 480 | 503 | | 5,900 | 454 | 509 | | 6,000 | 445 | 508 | | 6,300 | 414 | 496 |
|