Please use the chart below as a preliminary head recommendation guide for our products.

There are 4 different compression charts listed. First, pick your compression. Then, choose your bore (looking down) & stroke (looking across).

The most common cylinder head recommendation that we suggest is listed below the cubic inch.

The engine combinations listed below are the most common in the industry. Remember this is only a guide. Please verify all applications with Brodix or an authorized Brodix dealer before making a final purchase.

8.5 – 10.0 To 1 Compression (Click the Part# for that product information)

STROKE
BORE 3.480 3.500 3.625 3.750 3.875 4.000 4.125 4.250 4.375 4.500 4.750
4.000 350 352 364 377 390 402 415 427 440
RR 180/ IK 180 RR 180/ IK 180 RR 180/ IK 180 RR 200/ IK 200 RR 200/ IK 200 BP IK 210 BP IK 210 BP IK 210 T1 STD
4.030 355 357 370 383 396 408 421 434 446
RR 180/ IK 180 RR 180/ IK 180 RR 180/ IK 180 RR 200/ IK 200 RR 200/ IK 200 BP IK 210 BP IK 210 BP IK 210 T1 STD
4.060 360 362 375 388 401 414 427 440 453
RR 180/ IK 180 RR 180/ IK 180 RR 180/ IK 180 RR 200/ IK 200 RR 200/ IK 200 BP IK 210 BP IK 210 BP IK 210 T1 STD
4.125 372 374 388 401 414 428 441 454 468
RR 200/ IK 200 RR 200/ IK 200 RR 200/ IK 200 BP IK 210 BP IK 210 BP IK 210 T1 STD T1 STD T1 STD
4.155 377 380 394 407 421 434 448 461 475
RR 180/ IK 180 RR 200/ IK 200 RR 200/ IK 200 BP IK 210 BP IK 210 BP IK 210 T1 STD STS T1 227 STS T1 227
4.250 426 440 454 468 482 496 511 540
RR BB O RR BB O RR BB O RR BB O RR BB O RR BB O RR BB BB 2 PLUS
4.310 438 452 467 481 496 511 525 554
RR BB O RR BB O RR BB O RR BB O RR BB O RR BB O RR BB R BB 2 PLUS
4.375 451 466 481 496 511 526 541 571
RR BB O RR BB O RR BB O RR BB O RR BB RR BB R BB 2 PLUS STS BB 2 PLUS
4.470 471 486 502 518 533 549 565 596
RR BB O RR BB O RR BB O RR BB R RR BB R RR BB R BP BB 2 PLUS BB 2X/ BB 3 XTRA 345
4.500 477 493 509 525 541 557 572 604
RR BB O RR BB O RR BB O RR BB R RR BB R BB 2 PLUS BP BB 2 PLUS BB 2 X
4.560 490 506 523 539 555 572 588 621
RR BB O RR BB O RR BB R RR BB R BB 2 PLUS BP BB 2 PLUS BB 2 X BB 2 XTRA
4.600 499 515 532 548 565 582 598 632
RR BB O RR BB O RR BB R BB 2 PLUS BP BB 2 PLUS BB 2X/ BB 3 XTRA 345 BB 2X/ BB 3 XTRA 345 BB 2 XTRA
4.625 504 521 538 554 571 588 605 638
RR BB O RR BB O RR BB R BB 2 PLUS BP BB 2 PLUS BB 2X/ BB 3 XTRA 345 BB 2X/ BB 3 XTRA 345 BB 2 XTRA

10.0 – 11.5 To 1 Compression (Click the Part# for that product information)

STROKE
BORE 3.480 3.500 3.625 3.750 3.875 4.000 4.125 4.250 4.375 4.500 4.750
4.000 350 352 364 377 390 402 415 427 440
BP IK 210 BP IK 210 BP IK 210 BP IK 210 BP IK 210 BP IK 210 T1 STD T1 STD T1 STD
4.030 355 357 370 383 396 408 421 434 446
BP IK 210 BP IK 210 BP IK 210 BP IK 210 BP IK 210 T1 STD T1 STD T1 STD T1 STD
4.060 360 362 375 388 401 414 427 440 453
BP IK 210 BP IK 210 BP IK 210 BP IK 210 T1 STD T1 STD T1 STD STS T1 227 STS T1 227
4.125 372 374 388 401 414 428 441 454 468
BP IK 210 BP IK 210 BP IK 210 T1 STD T1 STD STS T1 227 STS T1 227 STS T1 227 STS T1 227
4.155 377 380 394 407 421 434 448 461 475
BP IK 210 STS T1 215 STS T1 215 STS T1 215 STS T1 227 STS T1 227 18 SP X 18 SP X 18 SP X
4.250 426 440 454 468 482 496 511 540
RR BB RR BB RR BB RR BB RR BB BB 2 PLUS BB 2 PLUS BB 2 PLUS
4.310 438 452 467 481 496 511 525 554
RR BB RR BB RR BB RR BB RR BB BB 2 PLUS BB 2 PLUS BB 2 PLUS
4.375 451 466 481 496 511 526 541 571
RR BB RR BB RR BB RR BB RR BB BB 2 PLUS BB 2 PLUS BP BB 2 PLUS
4.470 471 486 502 518 533 549 565 596
RR BB RR BB RR BB RR BB BB 2 PLUS BB 2 PLUS BP BB 2 PLUS BB 2 XTRA
4.500 477 493 509 525 541 557 572 604
RR BB RR BB RR BB RR BB BB 2 PLUS BB 2 PLUS BP BB 2 PLUS BB 2 XTRA
4.560 490 506 523 539 555 572 588 621
RR BB RR BB RR BB BB 2 PLUS BB 2 PLUS BP BB 2 PLUS BB 2 X BB 2 XTRA
4.600 499 515 532 548 565 582 598 632
RR BB RR BB RR BB BB 2 PLUS BB 2 PLUS BB 2X/ BB 3 XTRA 345 BB 2 XTRA BB 2 XTRA
4.625 504 521 538 554 571 588 605 638
RR BB RR BB BB 2 PLUS BB 2 PLUS BB 2X BB 2X/ BB 3 XTRA 345 BB 2 XTRA BB 2 XTRA

11.0 – 13.0 To 1 Compression (Click the Part# for that product information)

STROKE
BORE 3.480 3.500 3.625 3.750 3.875 4.000 4.125 4.250 4.375 4.500 4.750
4.000 350 352 364 377 390 402 415 427 440
T1 STD T1 STD T1 STD T1 STD/ DS 225 T1 STD/ DS 225 STS T1 227 STS T1 227 STS T1 227 BP 11 SP X
4.030 355 357 370 383 396 408 421 434 446
T1 STD T1 STD T1 STD T1 STD/ DS 225 STS T1 227 STS T1 227 STS T1 227 STS T1 227 18 SP X
4.060 360 362 375 388 401 414 427 440 453
T1 STD T1 STD T1 STD/ DS 225 STS T1 227 STS T1 227 STS T1 227 STS T1 227 18 SP X STS 18 SP X
4.125 372 374 388 401 414 428 441 454 468
T1 STD T1 STD T1 STD/ DS 225 STS T1 227 STS T1 227 STS T1 227 18 SP X STS 18 SP X STS 18 SP X
4.155 377 380 394 407 421 434 448 461 475
T1 STD/ DS 225 T1 STD/ DS 225 STS T1 227 STS T1 227 STS T1 227 STS T1 227 18 SP X STS 18 SP X STS 18 SP X
4.250 426 440 454 468 482 496 511 540
BB 2 PLUS BB 2 PLUS BB 2 PLUS BB 2 PLUS BB 2 PLUS BP BB 2 PLUS BB 2 X BB 2 X
4.310 438 452 467 481 496 511 525 554
BB 2 PLUS BB 2 PLUS BB 2 PLUS BB 2 PLUS BP BB 2 PLUS BB 2 X BB 2 X BP BB 2 XTRA
4.375 451 466 481 496 511 526 541 571
BB 2 PLUS BB 2 PLUS BB 2 PLUS BP BB 2 PLUS BB 2 X BB 2 X BB 2X/ BB 3 XTRA 345 BB 3 XTRA 345
4.470 471 486 502 518 533 549 565 596
BB 2 PLUS BB 2 PLUS BP BB 2 PLUS BB 2 X BB 2 X BB 2 X BP BB 2 XTRA BB 3 XTRA 345
4.500 477 493 509 525 541 557 572 604
BB 2 PLUS BP BB 2 PLUS BP BB 2 PLUS BB 2 X BB 2 X BP BB 2 XTRA BP BB 3 XTRA BP BB 3 XTRA
4.560 490 506 523 539 555 572 588 621
BP BB 2 PLUS BP BB 2 PLUS BB 2 X BB 2 X BB 2 XTRA BP BB 3 XTRA BP BB 3 XTRA BP BB 3 XTRA
4.600 499 515 532 548 565 582 598 632
BP BB 2 PLUS BB 2 X BB 2 X BB 2 X BP BB 3 XTRA O BP BB 3 XTRA O BP BB 3 XTRA BP BB 3 XTRA
4.625 504 521 538 554 571 588 605 638
BP BB 2 PLUS BB 2X BB 2X BP BB 2 XTRA BP BB 3 XTRA O BP BB 3 XTRA O BP BB 3 XTRA BP BB 3 XTRA

13.5 – 15+ To 1 Compression (Click the Part# for that product information)

STROKE
BORE 3.480 3.500 3.625 3.750 3.875 4.000 4.125 4.250 4.375 4.500 4.750
4.000 350 352 364 377 390 402 415 427 440
T1 STD T1 STD STS T1 227 STS T1 227 STS T1 227 STS T1 227 STS T1 227 BP 11 SP X STS 18 SP X
4.030 355 357 370 383 396 408 421 434 446
T1 STD T1 STD T1 STD STS T1 227 STS T1 227 STS T1 227 BP 11 SP X BP 11 SP X STS 18 SP X
4.060 360 362 375 388 401 414 427 440 453
T1 STD T1 STD STS T1 227 STS T1 227 STS T1 227 STS T1 227 BP 11 SP X STS 18 SP X STS 18 SP X
4.125 372 374 388 401 414 428 441 454 468
STS T1 227 STS T1 227 STS T1 227 STS T1 227 STS T1 227 BP 11 SP X BP 12 SP B BP 12 SP B BP 12 SP B
4.155 377 380 394 407 421 434 448 461 475
STS T1 227 STS T1 227 STS T1 227 STS T1 227 STS T1 227 BP 11 SP X BP 12 SP B BP 12 SP B BP 12 SP B
4.250 426 440 454 468 482 496 511 540
BB 2 PLUS BB 2 PLUS BB 2 PLUS BB 2 PLUS BP BB 2 PLUS BP BB 2 PLUS BB 2 X BP BB 2 XTRA
4.310 438 452 467 481 496 511 525 554
BB 2 PLUS BB 2 PLUS BB 2 PLUS BP BB 2 PLUS BP BB 2 PLUS BB 2 X BB 2 X BB 3 XTRA 345
4.375 451 466 481 496 511 526 541 571
BB 2 PLUS BB 2 PLUS BP BB 2 PLUS BP BB 2 PLUS BB 2 X BB 2 X BP BB 2 XTRA BP BB 3 XTRA O
4.470 471 486 502 518 533 549 565 596
BB 2 PLUS BP BB 2 PLUS BB 2 X BB 2 X BB 2 X BP BB 2 XTRA BB 3 XTRA 363/ BP BB 3 XTRA PB 1802
4.500 477 493 509 525 541 557 572 604
BB 2 PLUS BP BB 2 PLUS BB 2 X BB 2 X BB 2 X BB 3 XTRA 345/BP BB 2 XTRA BB 3 XTRA 345/ BP HH 383 PB 1802/ BP PB 1803
4.560 490 506 523 539 555 572 588 621
BP BB 2 PLUS BB 2 X BB 2 X BB 2 X BP BB 2 XTRA BP BB 3 XTRA PB 1802 PB 1802
4.600 499 515 532 548 565 582 598 632
BP BB 2 PLUS BB 2 X BB 2 X BP BB 2 XTRA BP BB 3 XTRA PB 1802/ PB 1803 PB 1802/ PB 1803 BP PB 1200
4.625 504 521 538 554 571 588 605 638
BB 2X/ BB 3 XTRA 345 BB 2X/ BB 3 XTRA 345 BB 2X/ BB 3 XTRA 363 BP BB 2 XTRA BP BB 3 XTRA BP PB 1200/ BP SR 20 PB 2002/ BP SR 20 BP PB 1200/ PB 2002/ BP SR 20

(479) 394-1075

301 Maple
P.O. Box 1347
Mena, Arkansas 71953

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