| 540 BIG-BLOCK |
| | SOURCE | PN | PRICE |
| BIG M SPORTSMAN | Dart | 31273454 | $2,300 |
| ROTATING ASSEMBLY | Scat | 1-42370BI | 1,765 |
| MAIN STUDS | ARP | 135-5601 | 110 |
| BALANCING | Machine shop | N/A | 150 |
| CYLINDER HONING | Machine shop | N/A | 150 |
| | TOTAL | $4,475 |
| COMMON COMBOS |
| DISPLACEMENT (CI) | BORE* | STROKE* | DECK HEIGHT* |
| 350 | 4.000 | 3.480 | 9.000 |
| 383 | 4.030 | 3.750 | 9.000 |
| 396 | 4.030 | 3.875 | 9.000 |
| 406 | 4.155 | 3.750 | 9.000 |
| 408 | 4.030 | 4.000 | 9.000 |
| 427 | 4.125 | 4.000 | 9.000 |
| 434 | 4.155 | 4.000 | 9.000 |
| 454 | 4.250 | 4.000 | 9.000 |
| 454 | 4.185 | 4.125 | 9.300 |
| 468 | 4.250 | 4.125 | 9.300 |
| 454 | 4.250 | 4.000 | 9.800 |
| 496 | 4.310 | 4.250 | 9.800 |
| 502 | 4.468 | 4.000 | 9.800 |
| 540 | 4.500 | 4.250 | 9.800 |
| 555 | 4.560 | 4.250 | 9.800 |
| 565 | 4.600 | 4.250 | 9.800 |
| 582 | 4.600 | 4.375 | 9.800 |
| 598 | 4.600 | 4.500 | 10.200 |
| 632 | 4.600 | 4.750 | 10.200 |
| 665 | 4.600 | 5.000 | 10.700 |
| 780 | 4.750 | 5.500 | 11.600 |
| *measurements in inches | |
| CRANK STRENGTH |
| MATERIAL | TENSILE STRENGTH (PSI) | USAGE |
| Cast iron | 70,000-80,000 | OE engines |
| Nodular iron | 95,000 | OE engines |
| Cast steel | 105,000 | Top-of-the-line casting |
| 5140 steel | 115,000 | Sportsman-grade forging |
| 4130 steel | 120,000-125,000 | Premium street/strip alloy |
| 4340 steel | 140,000-145,000 | Premium street/strip alloy |
Cubic inches alone won't get you very far, which is why Brodix has a set of heads up to the task of feeding the beasts its spread-bore blocks are bound to create. These 14.5-degree castings feature 2.520-inch intake valves and flow 557 cfm, good for close to 1,200 hp.