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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 KC PB 1803, BRODIX contacted the best head porters in the business to incorporate our porting design into a 100% CNC ported masterpiece.
The PB 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.
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PB 1800 Series Advantages
Flows Over 475 cfm Out of the Box (PB 1802)
18° Valve Angle Nitrous Friendly
Spread Intake Ports Thick Deck Surface Raised Intake Ports
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Intake Port
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Chamber Volume
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Valve Sizes Intake/Exhaust
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Exhaust Pattern
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Intake Manifold
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PB 1801
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375 cc
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89 cc
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2.400/1.900
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Standard
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PM 1800/PM 1810
PM 1903**/
PM 1913**
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PB 1800
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415 cc
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89 cc
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2.400/1.900
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Standard
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PM 1800/PM 1810
PM 1903**/
PM 1913**
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PB 1802
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456 cc
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91 cc
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2.400/1.900
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Standard
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PM 1800/PM 1810
PM 1903**/
PM 1913**
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PB 1803
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413 cc
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95 cc
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2.450/1.860
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Standard
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PM 1803/PM 1813
PM 1903/PM 1913
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KC PB 1803
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410 cc
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95 cc/ 91 cc*
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2.450/1.860
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Standard
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PM 1803/PM 1813
PM 1903/PM 1913
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* Chamber Volume With Stealth Titanium Valves
** Oval Port Manifold MUST Be Port Matched to Fit Rectangular Port Heads
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Cubic Inch
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Compression
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Camshaft
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RPM
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Application
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PB 1801
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522 - 555
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13.5 Minimum
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Roller
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4500-7500
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Pro Street/
Drag Race/
Truck Puller
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PB 1800
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540 - 632
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13.5 Minimum
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Roller
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4500-7500
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Pro Street/
Drag Race/
Truck Puller
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PB 1802
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555 - 632
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13.5 Minimum
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Roller
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4500-7500
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Pro Street/
Drag Race/
Truck Puller
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PB 1803
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522 - 632
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13.5 Minimum
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Roller
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4500-7500
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Pro Street/
Drag Race/
Truck Puller
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KC PB 1803
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522 - 632
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13.5 Minimum
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Roller
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4500-7500
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Pro Street/
Drag Race/
Truck Puller
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Valve Size
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0.200
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0.300
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0.400
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0.500
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0.600
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0.700
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0.800
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0.900
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PB 1801
(Hand Ported)
4.500 Bore
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2.400 Intake
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162
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245
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312
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367
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411
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442
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463
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1.900 Exhaust
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129
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180
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222
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269
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301
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308
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315
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PB 1800
4.600 Bore
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2.400 Intake
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117
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184
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256
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328
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391
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435
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453
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1.900 Exhaust
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113
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166
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211
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239
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252
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259
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264
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PB 1802
4.600 Bore
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2.400 Intake
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135
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205
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280
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351
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409
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449
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480
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1.900 Exhaust
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100
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151
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193
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234
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265
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296
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306
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PB 1802
(CNC Combustion
Chambers)
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2.400 Intake
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156
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230
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305
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361
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414
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453
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476
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1.900 Exhaust
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135
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180
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219
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252
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294
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306
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313
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PB 1803
(CNC Combustion
Chambers)
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2.450 Intake
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137
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217
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296
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362
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418
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464
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484
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490
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1.860 Exhaust
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110
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162
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204
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238
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265
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288
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320
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328
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KC PB 1803
(CNC Ported)
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2.450 Intake
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138
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218
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300
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364
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420
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460
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489
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505
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1.860 Exhaust
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116
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164
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204
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235
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266
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294
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323
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343
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CNC Oval Ports
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PB 1802
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• PS CB:
Valve Bowls Blended
• PS MI:
Match Intake Port to FP 1298
(PB 1800-1802)
Match Intake Port to BRODIX MG 2013
(PB 1803)
• PS Valve Job:
Competition Valve Job
• Intake Valves:
2.400 x 6.600 o.a.l. - BR 81660,
45° Seat Angle (PB 1800-1802)
2.450 x 6.650 o.a.l. - BR 81665,
55° Seat Angle (PB 1803)
• Exhaust Valves:
1.900 x 6.450 o.a.l. - BR 81645,
45° Seat Angle (PB 1800-1802)
1.860 x 6.550 o.a.l. - BR 81685,
55° Seat Angle (PB 1803)
• Valve Springs:
1.625 Roller Valve Spring - MA 221424,
260 lb Closed, 790 lb Open
2.100 Installed Height,
.800 Maximum Lift
1.645 Roller Valve Spring - CC 948,
315 lb Closed, 915 lb Open,
2.100 Installed Height,
.850 Maximum Lift
• Retainers:
1.625 10° Titanium - MA 23640
1.645 10° Titanium - MA 2001
• Valve Locks:
10° Jumbo - CC 611
• Rocker Studs:
Shaft System Required
• Valve Seals:
11/32 - US VS529V (1.625 Valve Spring)
11/32 - US VS485V (1.645 Valve Spring)
Special Intake Gaskets For PB 1803 Series Heads Available Exclusively From BRODIX
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• Torque Heads:
70 ft-lb
• Torque Rocker Studs:
40-45 ft-lb
• Intake Gaskets:
FEL-PRO 1298, COMETIC C5419
(PB 1800-1802)
BRODIX MG 2013
(PB 1803, CNC Ported PB 1803)
• Head Gaskets:
4.540 - FEL-PRO 1017, COMETIC C5433
4.600 - FEL-PRO 1057, COMETIC C5434
• Exhaust Gaskets:
FEL-PRO 1412, COMETIC C5418
• Head Studs:
ARP 234-4712 (12 pt)
• Accessory Bolt Holes Are Drilled
• Spark Plug Starting Points:
NGK R5671A-10
for Alcohol
NGK R5671A-9
for Racing Gas
• Spring Pockets:
May Not be Cut Any Larger
or Deeper Than 1.750
• Valve Angle:
18° and 4° Intake,
9° and 4° Exhaust
• Angle Milling:
Not Available
• Flat Milling:
.0055 in Per cc
• Angle Machining:
Not Available
• Dowel Shift:
Not Available
• Pushrod Slots:
Standard
• Rocker Arms:
JESEL or T&D Shaft System
• Lifters:
Standard
• Pistons:
Standard 18° x 9° Valve Angle
• Pushrods:
Check Pushrod Clearance with Head Installed on the
Engine Block Before Final Assembly.
• 4.375 Minimum Bore
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PB 1801 Bare
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375 cc Intake Runner
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2180002
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PB 1801 Pkg
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375 cc Intake Runner
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2181004
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PB 1800 Bare
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415 cc Intake Runner
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2180000
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PB 1800 Pkg
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415 cc Intake Runner
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2181000
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PB 1802 Bare
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456 cc Intake Runner
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2180001
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PB 1802 Pkg
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456 cc Intake Runner
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2181002
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PB 1803 Bare
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413 cc Intake Runner
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2180003
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PB 1803 Pkg
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413 cc Intake Runner
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2181006
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KC 1803 Pkg
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413 cc Intake Runner
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2181007
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KC PB 1803 Bare
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410 cc Intake Runner
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2188001
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KC PB 1803 Pkg
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410 cc Intake Runner
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2188102
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Phone: (479) 394-1075 • Fax: (479) 394-1996 • 301 Maple • P.O. Box 1347 • Mena, Arkansas 71953
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Not legal for sale or use on pollution controlled motor vehicles. |
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© 2008 by Brodix, Inc.
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