NEW NITRO BLACK DIESEL PERFORMANCE VALVES
For Ford Powerstroke, GM Duramax and Dodge Cummins Engines
FEATURES
Our diesel performance valves are de-
· Exotic inconel al oy is designed to function in extreme
signed to perform reliably in the extreme
heat and stress conditions
conditions that exist in highly boosted
· Stel ite facing creates additional heat resistance on the head
turbo diesel engines.
of the valve
Bi-metal ic exhaust valves are made
from inconel and HNV-3 al oys and are
· Liquid nitriding strengthens the entire valve material -
stel ite faced to operate under extreme
not just the surface area
heat conditions.
· Better ductility beneath the extremely hard magnetite outer layer
Intake valves are made from 21-4N
makes the valve less likely to break, even if contacted by a piston
al oy steel. Both intake and exhaust
valves are put through our proprietary
· Greater surface hardness reduces crack formation
five step liquid nitriding process, result-
· Smoother, stronger surface means less valve and valve guide wear
ing in valves that are smoother, stronger
than chrome
and more corrosion resistant than tradi-
tional chrome plated stainless valves.
· Resists corrosion and deposits caused by exotic fuels
ENGINE PRO NITRO BLACK DIESEL PERFORMANCE VALVES
APPLICATION
PART #
TYPE
HEAD DIA
STEM DIA
OVERALL LGTH
TIP LGTH
SEAT ANGLE
DODGE/CUMMINS ISB 5.9L
01-4991-12
EXH
1.299
0.2756
4.893
0.299
45 DEG.
6.6L TURBO (98-10) 24 VALVES
01-4990-12
INT
1.299
0.2756
4.907
0.299
30 DEG.
FORD 6.0L POWERSTROKE
01-4985-8
EXH
1.102
0.2738
5.059
0.358
37 DEG.
NAVISTAR TURBO (03-10) 32 VALVES
01-4984-8
INT
1.139
0.2738
5.059
0.358
30 DEG.
FORD 6.4L POWERSTROKE
01-4987-8
EXH
1.161
0.2734
5.138
0.433
39.3 DEG.
NAVISTAR TURBO (08-10) 32 VALVES
01-4986-8
INT
1.339
0.2736
5.138
0.433
37 DEG.
FORD 6.7L POWERSTROKE
01-4989-8
EXH
1.195
0.2748
5.242
0.699
29.3 DEG.
FORD TURBO (2011 - ON) 32 VALVES
01-4988-8
INT
1.331
0.2748
5.242
0.699
29.3 DEG.
FORD 7.3L POWERSTROKE
01-4983-8
EXH
1.681
0.3122
5.801
0.289
37.3 DEG.
NAVISTAR 444TE TURBO (94-03)
01-4982-8
INT
1.681
0.3122
5.798
0.339
30 DEG.
16 VALVES
GM 6.6L DURAMAX DD
01-4995-8
EXH
1.220
0.2730
4.965
0.519
45 DEG.
(01-13) 32 VALVES
01-4994-8
INT
1.299
0.2741
4.975
0.519
45 DEG.
NOTE: 32 VALVE ENGINES REQUIRE 2 BOXES OF 8 EXHAUST VALVES AND 2 BOXES OF 8 INTAKE VALVES TO
REPLACE VALVES IN COMPLETE ENGINE
PERFORMANCE INCONEL ALLOY VALVES
· For marine and supercharged applications
· Exotic alloy designed to function in extreme heat conditions
· One piece forging
· Swirl polished for improved flow characteristics
· Hard wafer tip
HEAD
STEM
INSTALLED
OVERALL
TIP
PART #
TYPE
DIAMETER
DIAMETER
HEIGHT
LENGTH
LENGTH
CHEVROLET BIG BLOCK
01-4301-8 INCONEL
EXH
1.890
3/8"
+0.048
5.400
.250
01-4312-8 INCONEL
EXH
1.880
11/32"
+0.098
5.450
.250
01-4313-8 INCONEL
EXH
1.900
11/32"
+0.098
5.450
.250
NEW NUMBERS SHOWN IN BOLD FACE TYPE
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