| NITRO Black Nitrided Stainless Steel Valves |
Engine Pro's new Nitro Black high performance engine valves offer superior performance characteristics not found in traditional chrome plated valves. Once only available for 4- and 5-valve racing engines, Nitro Black makes them available for two-valve domestic engines. Nitro Black valves are manufactured using a proprietary liquid nitriding process that resists breaking and cracking.
• 21-4N High Strength Stainless Alloy
• Swirl Polished for Improved Flow Characteristics
• Fully Undercut Stem
• Hard Wafer Tip
• One Piece Forging
• Proprietary Liquid Nitriding Process that Creates a Valve that is
Smoother,
Stronger and More Corrosion Resistant than Traditional Chromed Valves
• Deep Nitriding Provides Better Ductility Under the Hard Nitrided Layer as Proven in Rotating-Bending Fatigue Tests
• Valve is Less Likely to Break Even if Contacted by the Piston
• Greater Surface Hardness Means Less Valve Guide Wear
• Improved Corrosion Resistance even with Exotic Fuels
• Our Nitriding Process is Much Cleaner than Chroming-
it’s Better for the Environment |
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Download NITRO Black Product Sheet (pdf)
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Nitro Black Nitrided Valves Specifications
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| ^^Select a spec. from the panel above |
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| STAINLESS VALVES |
| Engine Pro Performance Stainless Valves feature
superior design engineering and enhanced product features. Our
valves are manufactured to exacting standards and from only the
highest quality materials. |
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- Undercut Stem
- Fully Machined
- Hardened Tip
- One Piece Forging
- Stainless Steel Alloy
- Hard Chrome Plated Stem
Download Stainless Valves Performance Catalog Page |
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HEAD |
STEM |
INSTALLED |
OVERALL |
TIP |
| PART # |
TYPE |
DIAMETER |
DIAMETER |
HEIGHT |
LENGTH |
LENGTH |
| CHEVROLET SMALL BLOCK |
| 01-1000 |
EXH |
1.500 |
11/32" |
STOCK |
4.910 |
.250 |
| 01-1001 |
EXH |
1.600 |
11/32" |
STOCK |
4.910 |
.250 |
| 01-1001.100 |
EXH |
1.600 |
11/32" |
+.100 |
5.010 |
.250 |
| 01-1002 |
INT |
1.940 |
11/32" |
STOCK |
4.910 |
.250 |
| 01-1003 |
INT |
2.020 |
11/32" |
STOCK |
4.910 |
.250 |
| 01-1003.100 |
INT |
2.020 |
11/32" |
+.100 |
5.010 |
.250 |
| 01-1007 |
INT |
2.055 |
11/32" |
STOCK |
4.910 |
.250 |
| 01-1007.100 |
INT |
2.055 |
11/32" |
+.100 |
5.010 |
.250 |
| 01-1008 |
INT |
2.080 |
11/32" |
STOCK |
4.910 |
.250 |
| 01-1008.100 |
INT |
2.080 |
11/32" |
+.100 |
5.010 |
.250 |
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| CHEVROLET BIG BLOCK |
| 01-1011 |
EXH |
1.720 |
3/8" |
STOCK |
5.352 |
.250 |
| 01-1004 |
EXH |
1.880 |
3/8" |
STOCK |
5.352 |
.250 |
| 01-1010 |
INT |
2.065 |
3/8" |
STOCK |
5.228 |
.250 |
| 01-1005 |
INT |
2.190 |
3/8" |
STOCK |
5.228 |
.250 |
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| FORD SMALL BLOCK |
| 01-1102 |
EXH |
1.460 |
11/32" |
STOCK |
5.070 |
.250 |
| 01-1101 |
INT |
1.780 |
11/32" |
STOCK |
5.070 |
.250 |
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| Out perform the competition with these superior stainless one-piece valves. Our Competition Series Valves feature 21-4N stainless alloy, hard wafer tip, chromed stem, full undercut and swirl polished for optimum flow. |
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- High Strength Stainless Alloy (21-4N)
- Swirl Polished for Improved Flow Characteristics
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HEAD |
STEM |
INSTALLED |
OVERALL |
TIP |
| PART # |
TYPE |
DIAMETER |
DIAMETER |
HEIGHT |
LENGTH |
LENGTH |
| CHEVROLET SMALL BLOCK |
| 01-2000 |
EXH |
1.500 |
11/32" |
STOCK |
4.910 |
.250 |
| 01-2001 |
EXH |
1.600 |
11/32" |
STOCK |
4.910 |
.250 |
| 01-2001.100 |
EXH |
1.600 |
11/32" |
+.100 |
5.010 |
.250 |
| 01-2002 |
INT |
1.940 |
11/32" |
STOCK |
4.910 |
.250 |
| 01-2003 |
INT |
2.020 |
11/32" |
STOCK |
4.910 |
.250 |
| 01-2003.100 |
INT |
2.020 |
11/32" |
+.100 |
5.010 |
.250 |
| 01-2007.100 |
INT |
2.055 |
11/32" |
+.100 |
5.010 |
.250 |
| 01-2008.100 |
INT |
2.080 |
11/32" |
+.100 |
5.010 |
.250 |
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| CHEVROLET BIG BLOCK |
| 01-2004 |
EXH |
1.880 |
3/8" |
STOCK |
5.352 |
.250 |
| 01-2004.100 |
EXH |
1.880 |
11/32" |
+.100 |
5.452 |
.250 |
| 01-2005 |
INT |
2.190 |
3/8" |
STOCK |
5.228 |
.250 |
| 01-2012.250 |
INT |
2.250 |
11/32" |
+.250 |
5.478 |
.250 |
| 01-2013.250 |
INT |
2.300 |
11/32" |
+.250 |
5.478 |
.250 |
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| MITSUBISHI ECLIPSE 2.0L DOHC 16 VALVE (4G63-4G63T) 1990-2000 |
| 01-2103 |
EXH |
30.5mm |
6.55mm |
STOCK |
109.7mm |
3.8mm |
| 01-2104 |
EXH |
31.5mm |
6.55mm |
STOCK |
109.7mm |
3.8mm |
| 01-2101 |
INT |
34mm |
6.57mm |
STOCK |
109.7mm |
3.8mm |
| 01-2102 |
INT |
35mm |
6.57mm |
STOCK |
109.7mm |
3.8mm |
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| PERFORMANCE INCONEL ALLOY SERIES |
• 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
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| CHEVROLET BIG BLOCK |
| 01-4301 INCONEL |
EXH |
1.890 |
3/8" |
+0.048 |
5.400 |
.250 |
| 01-4312 INCONEL |
EXH |
1.880 |
11/32" |
+0.098 |
5.400 |
.250 |
| 01-4313 INCONEL |
EXH |
1.900 |
11/32" |
+0.098 |
5.400 |
.250 |
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