Shop By Product Matching "Exhaust"

Choose your Engine for your 1974 Pontiac LeMans


Showing 1 - 10 of 17 products
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FelPro
  • Exhaust Pipe Flange Gasket
  • Donut Packing Ring 2-1/32 (in) Inside Diameter
  • FEL-PRO 8194 Exhaust Pipe Flange Gasket for Chevrolet Camaro
  • Product Attributes:
    • Inside Diameter:
      • 2.031
      • 51.6
    • Grade Type: Premium
    • Bolt Hole Quantity: 0
  • Features:
    • Meets or exceeds all original equipment specifications
    • Application specific design to ensure a perfect fit
    • Engineered for the sealing repair environment
    • Unsurpassed quality you can trust
    • Validated for fit, form, and function
  • Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.

This Part Fits the Following OEM/Substitute Numbers:
13001, 130011, 13001GR, 13001GR 1, 13001GR1, 13018, 130181, 13047GR 1, 13047GR1, 14057151, 1564777, 31400, 31416, 3173282, 3696990, 3731062, 374170, 377125...VIEW MORE

Additional Fitment Information:
Vehicle Block CC Position Engine CID
1974 - Pontiac LeMans L 4098 Manifold To Front Pipe 6 Cyl 4.1L 250

Remflex Exhaust Gaskets
  • Exhaust Gasket-PONTIAC V8, 326-455
  • "Suggested Torque: 20 Ft Lbs; 1-1/8"" x 1-3/4"" D-Shaped Center Ports; 1-3/8"" x 1-13/16"" Oval End Ports; (Port Match to the Head); Manifold or Headers; 2pc Set"
  • V8 - 326, 350, 370, 389, 400, 421, 428, 455 ('58-'79),( Except Ram Air IV, Super Duty and High Output), 1-1/8" x 1-3/4" D-Shaped Center Ports , 1-3/8" x 1-13/16" Oval End Ports, (Port Match to the Head), Manifold or Headers, 2/Set
  • Product Attributes:
    • Prop 65 - Short Label: Prop65_warning.jpg
    • Prop 65 (C, R or CR): Cr
    • Material: Graphite
  • Remflex's unique flexible graphite material has been proven for more than 30 years in industrial applications, where temperatures routinely exceed 2,000 degrees-day after day, week after week, year after year. Now, they're bringing this technology to enthusiasts of all kinds to eliminate exhaust leaks for good! Whether you have an old pick-up that needs a manifold gasket, or a race car with custom-built headers, you can be assured that Remflex exhaust gaskets will work properly the first time, every time.

Additional Fitment Information:
Vehicle
1974 - Pontiac LeMans

Remflex Exhaust Gaskets
  • Exhaust Gasket-PONTIAC V8, 326-455
  • Suggested Torque: 20 Ft Lbs; 1-1/8" x 1-3/4" D-Shaped Center Ports ; 1-3/8" x 1-13/16" Oval End Ports; (Port Match to the Head); Manifold or Headers; 2/Set
  • V8 - 326, 350, 370, 389, 400, 421, 428, 455 ('58-'79),( Except Ram Air IV, Super Duty and High Output), 1-1/8" x 1-3/4" D-Shaped Center Ports , 1-3/8" x 1-13/16" Oval End Ports, (Port Match to the Head), Manifold or Headers, 2/Set
  • Product Attributes:
    • Prop 65 - Short Label: Prop65_warning.jpg
    • Prop 65 (C, R or CR): Cr
    • Material: Graphite
  • Remflex's unique flexible graphite material has been proven for more than 30 years in industrial applications, where temperatures routinely exceed 2,000 degrees-day after day, week after week, year after year. Now, they're bringing this technology to enthusiasts of all kinds to eliminate exhaust leaks for good! Whether you have an old pick-up that needs a manifold gasket, or a race car with custom-built headers, you can be assured that Remflex exhaust gaskets will work properly the first time, every time.

Additional Fitment Information:
Vehicle Block CC Engine Engine Version CID
1974 - Pontiac LeMans V 7456 8 Cyl 7.5L U/K 455

Mr Gasket
  • Round Port Shape; Port Diameter 1.88 in.
  • Ultra Seal Exhaust Gasket Set; Round Port Shape; Port Diameter 1.88 in.;
  • Ultra Seal Exhaust Gasket Set
  • Product Attributes:
    • Gasket Line: Ultra-seal
    • Engine Make/Size: Pontiac V8
    • Port Size: 1.880 In.
  • Features:
    • Graphite-Impregnated Facing
    • Steel Expanded Metal Core
    • Superior Tensile Strength
    • Resists Cracking
    • Withstands Intense Heat
    • Resists Deteriorating
    • Anti-Stick Properties
    • Easy Removal For Disassembly
  • Manufactured from high-temperature steel core/graphite faced exhaust material. Expanded steel core provides stability and maximum torque retention to eliminate gasket failure. Graphite facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head. Conforms to and seals minor surface irregularities. High recovery material allows header or manifold flange to stay sealed if flange loses clamp-load. Can be trimmed if necessary for modified port applications. For original equipment replacement, high performance street, drag race and oval track use.

Additional Fitment Information:
Vehicle Block CC Engine Engine VIN CID
1974 - Pontiac LeMans V 7456 8 Cyl 7.5L Y 455

Mr Gasket
  • Round Port Shape; Port Diameter 1.88 in.
  • Ultra Seal Exhaust Gasket Set; Round Port Shape; Port Diameter 1.88 in.;
  • Ultra Seal Exhaust Gasket Set
  • Product Attributes:
    • Gasket Line: Ultra-seal
    • Engine Make/Size: Pontiac V8
    • Port Size: 1.880 In.
  • Features:
    • Graphite-Impregnated Facing
    • Steel Expanded Metal Core
    • Superior Tensile Strength
    • Resists Cracking
    • Withstands Intense Heat
    • Resists Deteriorating
    • Anti-Stick Properties
    • Easy Removal For Disassembly
  • Manufactured from high-temperature steel core/graphite faced exhaust material. Expanded steel core provides stability and maximum torque retention to eliminate gasket failure. Graphite facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head. Conforms to and seals minor surface irregularities. High recovery material allows header or manifold flange to stay sealed if flange loses clamp-load. Can be trimmed if necessary for modified port applications. For original equipment replacement, high performance street, drag race and oval track use.

Additional Fitment Information:
Vehicle Block CC Engine CID
1974 - Pontiac LeMans V - 8 Cyl 7.5L 455

FlowTech
  • Includes 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
  • Header Gasket Set; Includes 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets;
  • Header Gasket Set
  • Product Attributes:
    • Gasket Line: P73 Ferroglass Non-asbestos
    • WARNING CA Proposition 65: No
    • Collector Gaskets Included: Yes
    • Port Size: 1.500 In. X 1.820 In.
  • Features:
    • Engineered For A Precise Easy Fit
    • P73 Ferro glass Non-Asbestos Facing Material
    • Mechanically Clinched To A Perforated Metal Core
    • Superior Sealing And Strength
    • Inorganic Filler system
  • Replacement Header Gaskets for 283-400 Small Block Chevy full length headers. Kit consists of (2) Header flange gaskets and (2) 3 in. collector gaskets and (2) 2.5 in. collector gaskets

Additional Fitment Information:
Vehicle Block CC Engine CID
1974 - Pontiac LeMans V 5733 8 Cyl 5.7L 350

Hedman
  • Mid-Length Headers For 67-81 Camaro, Nova, G-Body with 283-400
  • Air Conditioning: No Power Steering: Yes Auto Transmission - Column: Yes Auto Transmission - Floor: Yes Manual Transmission - Column: No Manual Transmission - Floor: No Footnotes: Will not fit (Saginaw) close ratio P/S with 825 power steering box. Footnotes: (1) Without smog injection or injection heads. Footnotes: (103) Will fit with angle plug heads (Chevy aluminum only, L98). Footnotes: (121) Must modify rotary A/C bracket. Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R. Does not require EO if existing emission controls are not removed. Engine Family: SB Chevy 283-400 (Gen 1)
  • Standard-Duty Headers For Various Camaro, Chevelle, El Camino, Nova, Regal, Cutlass, Grand Prix & Others; SB Chevy 283-400; 1-5/8 in. Mid-Length Tubes, 3 in. Collector; Non-E.O. ; Uncoated Mild-Steel
  • Product Attributes:
    • Header Port Shape: Round
    • Quantity: Sold As A Pair.
    • with A.I.R. System: No
    • Cylinder Head: Stock Profile Heads
    • Tuned: No
    • Cylinder Head Port Shape: Round
    • Header Style: Mid-length Tube
    • Manual Transmission - Column: No
    • Finish: Uncoated
    • Flange Style: Standard
    • Collector Bolts Included: Yes
    • Bolts/Studs Included: Yes
    • Automatic Transmission - Floor: Yes
    • with EGR: No
    • Tube Material Thickness: 16g
    • Tube Diameter: 1-5/8 In.
    • Automatic Transmission - Column: Yes
    • Reducer Outlet Size: 2-1/2 In.
    • Tube Size: 1-5/8 In.
    • Port Shape: Round
    • Tube Length: Mid-length Tubes
    • Manual Transmission - Floor: No
    • Collector Diameter: 3 In.
    • Tube Style: Mid-length
    • Variations: 68606, 68603, 68608 & 63608. 62600, 62606 & 62603 304 Stainless Steel.
    • Collector Size: 3 In.
    • Header Finish: Uncoated
    • IMPORTANT!: Automatic Transmission Only!
    • Mounting Hardware Included: Yes
    • Weld-Up: No
    • Collector Attachment: 3 In.
    • Header Fasteners Included: Yes
    • Y-Pipe Included: No
    • Finish Type: Uncoated Mild Steel! Shipped With Temporary Paint.
    • Notes: 67-81 F; 64-83 A, 82-88 G; 68-79 X; 71-94 B; 84-04 Astro 283-400
    • Motor Mounts Included: No
    • Primary Tube Diameter (in): 1.625 In.
    • Crossover Pipe Included: No
    • Header Construction: Mild Steel- Standard-duty
    • Replacement Head Flange Gasket: 27500
    • Tube Design: Standard
    • Material: Mild Steel
    • Power Steering: Yes
    • E.O. #: No
    • Exhaust System Dia: 2-1/2 In.
    • Flange Thickness: 0.3125 In.
    • Engine: Chevy Sb 283-400 (gen 1) 1958-86
    • LS SWAP: No
    • Reducers Included: Yes
    • Primary Tube Gauge: 16g
    • Header Material: Mild Steel
    • Catalytic Converter(s) Included: No
    • Replacement Gasket: 27500
    • Collector Style: Ball And Socket Style (gasketless)
    • Emissions Notes: Not Legal For Street Use On '75-later Model Years! Legal For Off-road Use Only.
  • Features:
    • Handcrafted, Mild Steel Construction.
    • The Mid-Length Tube Header Design Provides Significantly More Low and Mid-range Power than Cast Manifolds, and Provide Better Ground Clearance And Component Compatibility Than Long Tube Headers.
    • Ball & Socket Collector Design requires No Gasket, and Allows For More Exhaust System Misalignment than Old School, Gasket-Style Header Collectors
    • Includes All The Necessary Mounting Hardware, Gaskets and Reducers (exhaust adapters)
    • Limted Lifetime Warranty On Construction, Five Year Warranty on Factory-Applied Header Coating!
    • Proud To Say, Made In The USA, Since 1954!
  • Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing long and MID-LENGTH tube headers for Chevy passenger cars for decades. Each set uses mild steel, smooth flowing, CNC mandrel bent tubes, that are hand-welded to ensure each pair is identical to the next. Hedman's unique, gasketless ball and socket collector design allows your Small Block Chevy exhaust system to bolt up, even if it is not perfectly aligned with the header collectors.

    These uncoated, MID-LENGTH tube headers are one of the most versatile headers Hedman Hedders manufacturers. While we've seen them on rare builds, like a SB Chevy equipped Studebaker, these MID-LENGTH headers are actually cataloged to fit Small Block Chevy V8 powered, 1967-81 Chevy Camaros; 1964-1987 GM A-Body and G-Body vehicles (Buick Regal, Chevy Chevelle, El Camino, Monte Carlo, Olds Cutlass, Pontiac Grand Prix); '68-79 Chevy II and Nova. Heck, they even fit 1984-2004 Chevy AstroVans. The smooth 1-5/8 in tube design provides ample exhaust flow to let your 283-400 SB Chevy engine breathe easy, and improve horsepower and torque over stock manifolds.

    These headers are uncoated, and ship from the factory with a temporary black paint that will burn off when submitted to normal operating temperatures. For protection against the element and lower underhood temperatures, these headers are also available with a silver or black ceramic-metallic finish.

    Each set includes a pair of gaskets, header flange bolts and collector bolts. No collector gasket is needed.

    Hedman Hedders is so confident in the quality of its headers that these headers are factory backed by a Limited Lifetime Warranty.


Additional Fitment Information:
Vehicle Region Fuel Type Engine Version
1974 - Pontiac LeMans United States GAS Chevrolet

Flowmaster
  • 2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel Not Direct Fit-Some Adaptation Required
  • Super 44™ Delta Flow Muffler; 2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel;
  • Super 44™ Delta Flow Muffler
  • Product Attributes:
    • Tip Quantity: 0
    • Automotive Item Grade: High Performance
    • Muffler Type: Reflection
    • Outlet Connection Type: Pipe
    • Outlet Position: Center
    • Inlet Diameter: 2.250 In.
    • Sound Level: Aggressive
    • WARNING CA Proposition 65: No
    • Fitment: Universal
    • Body Width: 9.750 In.
    • Muffler Series: Super 44 Series
    • Inlet Inside Diameter: 2.250 In.
    • Outlet Outside Diameter: 2.250 In.
    • Main Piping Diameter: Oem
    • Inlet Position: Offset
    • Inlet Outside Diameter: 2.250 In.
    • Inlet Connection Type: Pipe
  • Features:
    • Durable Fully Welded 16ga Aluminized Steel
    • 3 Year Limited Warranty
    • Deep Aggressive Exhaust Note
    • Noticeable Interior Resonance
    • Recent Two Chamber Improvement
    • Race Proven Patented Delta Flow® Technology
    • No Internal Packing To Blowout
    • Premium Flowmaster Quality
  • Flowmaster's Super 44 muffler uses the same Delta Flow(R) technology found in our larger Super 40 mufflers. The Super 44 delivers a powerful rich tone and is the most aggressive, deepest sounding, highest performing four-inch case street muffler we've ever built! Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.

Additional Fitment Information:
Vehicle Block CC Engine CID
1974 - Pontiac LeMans V 7456 8 Cyl 7.5L 455

Flowmaster
  • Super 44™ Delta Flow Muffler
  • 2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel Not Direct Fit-Some Adaptation Required
  • Super 44™ Delta Flow Muffler; 2.25 in. Offset Inlet/Center Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel;
  • Super 44(TM) Delta Flow Muffler
  • Product Attributes:
    • Tip Quantity: 0
    • Automotive Item Grade: High Performance
    • Muffler Type: Reflection
    • Outlet Connection Type: Pipe
    • Outlet Position: Center
    • Inlet Diameter: 2.250 In.
    • Sound Level: Aggressive
    • WARNING CA Proposition 65: No
    • Fitment: Universal
    • Body Width: 9.750 In.
    • Muffler Series: Super 44 Series
    • Inlet Inside Diameter: 2.250 In.
    • Outlet Outside Diameter: 2.250 In.
    • Main Piping Diameter: Oem
    • Inlet Position: Offset
    • Inlet Outside Diameter: 2.250 In.
    • Inlet Connection Type: Pipe
  • Features:
    • Durable Fully Welded 16ga Aluminized Steel
    • 3 Year Limited Warranty
    • Deep Aggressive Exhaust Note
    • Noticeable Interior Resonance
    • Recent Two Chamber Improvement
    • Race Proven Patented Delta Flow® Technology
    • No Internal Packing To Blowout
    • Premium Flowmaster Quality
  • Flowmaster's Super 44 muffler uses the same Delta Flow(R) technology found in our larger Super 40 mufflers. The Super 44 delivers a powerful rich tone and is the most aggressive, deepest sounding, highest performing four-inch case street muffler we've ever built! Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.

Additional Fitment Information:
Vehicle Block CC Engine CID
1974 - Pontiac LeMans V 7456 8 Cyl 7.5L 455

FelPro
  • Exhaust Pipe Flange Gasket
  • Optional Sintered Metal 2-1/32 (in) Inside Diameter
  • FEL-PRO 60985 Exhaust Pipe Flange Gasket for Chevrolet Camaro
  • Product Attributes:
    • Inside Diameter:
      • 2.030
      • 51.6
    • Grade Type: Premium
    • Bolt Hole Quantity: 0
  • Features:
    • Meets or exceeds all original equipment specifications
    • Application specific design to ensure a perfect fit
    • Engineered for the sealing repair environment
    • Unsurpassed quality you can trust
    • Validated for fit, form, and function
  • Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.

This Part Fits the Following OEM/Substitute Numbers:
133901, 703840, 711361100, 7413842, 82-0022, 820022, F17250S

Additional Fitment Information:
Vehicle Block CC Position Engine CID
1974 - Pontiac LeMans L 4098 Manifold To Front Pipe 6 Cyl 4.1L 250
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