The 18° Pro Stock style cylinder heads from BRODIX are the Big Dukes. The PB 1800 and PB 1801 were the original designs in this legendary series. The PB 1802 is a cast ported version of the PB 1800 capable of flowing over 480 cfm. The professionals at BRODIX have contoured each intake port, exhaust port, and combustion chamber to flow its maximum potential out of the box. The revolutionary PB 1803 cylinder heads from BRODIX feature oval intake ports, CNC combustion chambers, and use all standard components for the 18� Pro Stock head excluding the manifold. For the BP PB 1803, BRODIX contacted the best head porters in the business to incorporate our porting design into a 100% CNC ported masterpiece. The BP 1803 utilizes an as-cast intake port that delivers outstanding out-of-the-box performance. Copper valve seats and a 55� seat angle make either head an excellent choice when looking for serious torque and horsepower. All Big Duke series heads require special pistons, valve covers, head studs, shaft rockers, and intake manifold.
** The price in the cart reflects a set of heads**
Cubic Inch
Compression
Camshaft
RPM
Application
PB 1801
522 - 555
13.5 Minimum
Roller
4500-7500
Pro Street/Drag Race/Truck Puller
PB 1800
540 - 632
PB 1802
555 - 632
PB 1803
522 - 632
BP PB 1803
Flow Chart cfm @ 28" H20
Valve Size
0.200
0.300
0.400
0.500
0.600
0.700
0.800
0.900
PB 1801 (Hand Ported)4.500 Bore
2.400 Intake
162
245
312
367
411
442
463
1.900 Exhaust
129
180
222
269
301
308
315
PB 18004.600 Bore
117
184
256
328
391
435
453
113
166
211
239
252
259
264
PB 18024.600 Bore
135
205
280
351
409
449
480
100
151
193
234
265
296
306
PB 1802(CNC CombustionChambers)
156
230
305
361
414
476
219
294
313
PB 1803(CNC CombustionChambers)
2.450 Intake
137
217
362
418
464
484
490
1.860 Exhaust
110
204
238
288
320
BP PB 1803(CNC Ported)
145
224
300
369
425
475
500
515
126
172
270
318
338
Package Heads come fully assembled with the following options: