Big & Small Block (5/16, 8 mm, 11/32) Specifications: Exhaust & Intake 5/16-8 mm valve stem. Viton rubber compound. Hi Temp. .530 ID. Use Ferrea Valve Guides #VG1011, #VG1055, #VG1066 AND #VG1067
Big & Small Block (5/16, 8 mm, 11/32) Specifications: Exhaust & Intake 5/16-8 mm valve stem. Viton rubber compound. Hi Temp. .500 ID. Use Ferrea Valve Guide #VG1011, #VG1020, #VG1055, #VG1061, #VG1066 AND #VG1067
Big & Small Block (5/16, 8 mm, 11/32) Specifications: Exhaust & Intake 11/32 mm valve stem. Viton rubber compound. Hi Temp. .500 ID. Use Ferrea Valve Guides #VG1021, #VG1029 AND #VG1030
Big & Small Block (5/16, 8 mm, 11/32) Specifications: Exhaust & Intake 11/32 mm valve stem. Viton rubber compound. Hi Temp. .530 ID. Use Ferrea Valve Guide # VG1012 AND #VG1014
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