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PN 2002 -- Chevrolet, V8, Big Block Round Port for Header Applications, 396, 402, 427, 454, 2/Set
MSRP $42.99

1-7/8" Dia. Round Port
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PN 2003 -- Chevrolet, Big Block, 396/6.5L, 402/6.6L, 427/7.0L, 454/7.4L, Match to Stock Port, Manifold or Header Applications, 2/Set
MSRP $42.99

Year Range: 1965 - 1990 (After 1990 See PN 2030)
1-13/16"w x 1-7/8"h Square Port
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PN 2013 -- Chevrolet, Big Block, 396, 402, 427, 454 ('65 - '90), Large Round Race Port, 2/Set
MSRP $42.99

2-5/32" Dia. Large Round Race Port
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PN 2029 -- GM Performance Big Block "Rectangular Port" Header Gasket, 1.750" Tall x 1.875" Wide, Fits: Old Style ZZ502 Rectangular Port, 2/Set
MSRP $42.99

1.750" Tall x 1.875" Wide Rectangular Port
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PN 2030 -- Chevrolet/GMC V8- Big Block 454/496/502 Gen. Mark (IV,V,VI), 2"w x 1-7/8"h Irregular Shape Stock Port, Manifold or Header Applications, 2/Set
MSRP $42.99

Year Range: 1991 & Up
(Use with stock cast iron and GM performance aluminum cylinder heads),
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PN 2035 -- Chevrolet, Big Block, D-Port, AFR Magnum, Header Applications, 2/Set
MSRP $42.99

2-9/32"w x 1-31/32"h D-Shaped Port
AFR "Magnum" Cylinder Heads
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PN 2036 -- Chevrolet, Big Block, 396, 402, 427, 454, Round Port, Header Applications, 2/Set
MSRP $42.99

1-3/4" Dia. Round Port
Use for Weld Bead Header Applications
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PN 2045 -- Chevrolet, Y-Pipe-to-Rear-Pipe Connector, GM 5.7L - 7.4L Truck ('96-'00), 1(ea)
MSRP $27.99

V8 Truck Y-Pipe Connector
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PN 2047 -- Chevrolet, Big Block, 396, 402, 427, 454, Large Round Race Port, 2/Set
MSRP $43.99

2.40" Dia. Large Round Race Port
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PN 2052 -- Chevrolet, Y-Pipe-to-Rear-Pipe Connector, Dual Port, 1(ea)
MSRP $27.99

V8 Truck Y-Pipe Connector
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