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Exhaust Manifold Big Block Left Without A.I.R. Holes (70-74 Corvette C3)Find parts that fit my vehicle

Item EK-25-125099-1
$0.00
1 Reviews of similar Exhaust
Our Price

$874.99 each

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      Product Information

      Features, Description, Q&A, Specs & Installation

      Features

      • Exhaust Manifold
      • For Big Block Engines
      • Passenger Side Model
      • Does Not Have A.I.R. Holes
      • Raw Metal Finish
      • Casting Number 3969869
      • Reproduction Part
      • Direct Replacement
      • Comes in Singles
      • Fits 1970-1974 Chevrolet Corvette C3 Models

      Description

      Factory-Correct Power. Designed for 1970-1974 Chevrolet Corvette C3 models, this Exhaust Manifold restores big block performance and authenticity in one straightforward upgrade. As a passenger side model with the correct 3969869 casting and no A.I.R. holes, it brings back OE-style flow and underhood accuracy for restorations and freshen-ups alike.

      Construction and Appearance. This reproduction part features a raw metal finish that mirrors period-correct appearance once treated or heat-cycled. The casting replicates original wall thicknesses and runner geometry to support reliable scavenging while preserving clearance to factory accessories and engine bay components. Smooth mating faces and accurately located bolt pads are machined to promote stable sealing at the head and collector, helping prevent warping and leaks through repeated heat cycles. The overall profile is engineered to align with stock heat shields and fasteners for a clean, OE-adjacent presentation.

      Installation. Built as a direct replacement, the manifold is suited to a versatile installation using common shop tools. Chase threads, dry-fit to confirm stud engagement, and use quality gaskets and hardware; torque in a cross pattern from the center outward to ensure uniform clamping. After initial heat cycling, recheck fasteners and inspect for soot traces to verify a solid seal. The passenger-side layout simplifies access around steering and suspension components, streamlining the process for weekend garage projects or professional restorations.

      Application. This Exhaust Manifold fits 1970-1974 Chevrolet Corvette C3 models. By pairing correct big block geometry with a faithful casting and finish, it helps restore dependable exhaust flow, reduces the risk of leaks, and maintains period-correct visuals—supporting both drivability and originality in your classic build.

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      Installation & What's in the Box

      Installation Info

      Installation Time

      (approx) 2 Hours

      Difficulty Level:

      Mechanical expertise or professional installation required.

      Installation Guides

        No guide available for this part yet.

      What's in the Box

      • (1) Exhaust Manifold
      4.7

      Reviews of similar Exhaust Products (1)

      Questions & Answers

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