CHEVROLET APPLICATION
Portflow Series (Big Block V8)

SI Valves

Ideal for both competition and street applications, they are similar in material and design to SI's competition valves, but manufactured in large production runs for all of the most popular applications. Because of the fully automated (robotic) production, SEV-series valves are priced lower than racing models, yet feature the same premium quality stainless steel forgings, chrome stems stellite tips and swirl-polishing. If you do not see a valve you need in the Competition or Silver line Series, use the Portflow, as they are suitable for these applications.

Quicksilvers feature increased undercut stems and thicker margins for increased flow and performance.

SI Valves

Back to Chevrolet Portflow Menu

DESCRIPTION

 LENGTH PART NUMBER
PRICE
$EA
2.190 B.B. 409 Chevy Intake Valve 5.110 SEV-2387-C
12.82
2.090 409 Chevy Intake 5.110 SEV-2387-ES
14.97
1.720 B.B. 409 Chevy Exhaust 5.110 SEV-2388-C
11.28
1.660 409 Chevy Exhaust 5.110 SEV-2388-CS
14.97
1.940 348/409 Chevy Intake 5.110 SEV-2387-194
12.82
1.725 B.B. Chevy Exhaust 5.355 SEV-2561
10.21
1.725 B.B. Chevy Exhaust (.100 Long) 5.455 SEV2561+100
11.20
2.190 B.B. Chevy Intake (.100 Long) 5.320 SEV-2562+100
11.24
2.190 B.B. Chevy Intake Valve 5.220 SEV-2562-C
10.94
2.190 B.B. Chevy Intake Valve 5.220 SEV-2562-E
8.68
1.840 B.B. Chevy Exhaust Valve 5.355 SEV-2614
9.07
2.300 B.B. Chevy Intake Valve 5.220 SEV-2615
11.73
2.300 B.B. Chevy Intake+100 5.320 SEV-2615+100
12.56
1.880 B.B. Chevy Exhaust Valve 5.355 SEV-2692
9.22
1.880 B.B. Chevy Exhaust (.100 Long) 5.455 SEV-2692+100
1.048
1.900 B.B. Chevy Exhaust 5.355 SEV-2692-S
11.36
1.940 B.B. Chevy Exhaust+100 5.455 SEV-2782+100
Call
2.065 B.B. Chevy Intake (.100 Long) 5.325 SEV-2867+100
11.50
2.065 B.B. Chevy Intake Valve 5.225 SEV-2867-C
9.95
2.065 B.B. Chevy Intake Valve 5.225 SEV-2867-E
9.02
2.125 B.B. Chevy Intake 5.220 SEV-2867-S 11.69
1.940 B.B. Chevy Exhaust (.100 Long) 5.455 SEV-2872+100
11.61
1.940 B.B. Chevy Exhaust Valve 5.355 SEV-2872-C
10.37
2.250 B.B. Chevy Intake 5.220 SEV-3119E Call
2.250 B.B. Chevy Intake Valve 5.275 SEV-3119
Call
2.250 B.B. Chevy Intake (.100 Long) 5.375 SEV-3119+100
Call
2.250 B.B. Chevy Intake Valve 5.220 SEV-3120
10.77
2.250 Chevy Intake (11/32 Stem) 5.275 SEV-3120+50 11.92
2.250 Chevy Intake (11/32 Stem) 5.320 SEV-3120+100 12.17

 

  

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