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MAC 1-5/8 in. Chrome Unequal Shorty Headers (79-93 5.0L)

Item 40069
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation

      Features

      • Increases Horsepower and Torque
      • Shorty Unequal Length Header Design
      • Free Flowing Mandrel-Bent Tubing
      • Bright Chrome Finish
      • CARB EO Number: D-241-4
      • For Use with Manual and Automatic Transmissions
      • Fits 1979-1993 5.0L V8 Mustangs

      Description

      More Horsepower And Torque. Replace those restrictive factory manifolds with a set of MAC shorty headers to improve your Mustang's exhaust flow and increase your pony's horsepower and torque.

      Unequal Length Design.
      These MAC Performance Headers feature a shorty, unequal length design that in addition to making more power also cleans up your engine bay for a show-winning look.

      High Quality Construction.
      Constructed from 1-5/8" mandrel bent 16 gauge steel tubing so there are no kinks to rob you of power, these MAC Performance Headers feature 2-1/2" True Fit Collectors that eliminate the need for gaskets which are prone to leak and blow out. These headers are then completed in a bright chrome finish for good looks and a durable long life.

      CARB Certified. Best of all these MAC Mustang Headers are 50-state smog legal under Carb EO# D-241-4.

      Application.
      Designed as a direct bolt on, these MAC Shorty Unequal Length Headers will bolt straight up in the stock location to the factory Mid-Pipe on both automatic and manual 1979 to 1993 5.0L V8 Mustangs, including the LX 5.0, GT and SVT Cobra models, for improved exhaust flow and sound.

      Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 Details

      MPN# E508692

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

      4.2

      Customer Reviews (18)

      Write a Review

      Ratings Summary

      4.2 out of 5 overall rating from 18 customers

      Installation Time: Afternoon





      • May 29, 2018

        5 1993 LX - Giovanni217 Installation Time: Less than 1 Hour

        MAC Shorties

        Extremely high quality. Welds are solid and all. For $200 you can’t beat the quality. Plus they look great.

        Helpful (3)
      • May 01, 2018

        2 1990 GT - propan27 Installation Time: Afternoon

        Didn’t fit well

        Had to dent in next to steering shaft And passengers side won’t seal to h pipe (new) had to make ball and socket gasket

        Helpful (3)
      • April 10, 2018

        3 1988 GT - Dylan Installation Time: Afternoon

        easy to install

        Could not fit a socket on the studs. There was little room for a wrench. but otherwise was an easy install.

        Helpful (3)
      • April 03, 2018

        3 1988 LX - StephenM Installation Time: Full Day

        Mac headers idk

        These are made well but where I had/have a problem with these headers are that the flange is against the block on drivers side, and my stock midpipe will not seal against the headers! I’ve tried several times! The steering shaft is against the header also! This pushes me into ordering Mac midpipe see if that fixes one of my problems! I bought these over the bbk headers thinking they might be better IDK!

        Helpful (4)
      • March 07, 2018

        5 1991 GT - MatthewS

        Look great

        I bought these for my 91 gt. They look great but I've not installed them yet.

        Helpful (2)
      • August 21, 2017

        5 1992 LX - JimM Installation Time: Less than 1 Hour

        93 Mustang hatchback

        With the help from, American Muscle,, Lunati, Summit racing,I have a man's toy work in progress. Great products, great people.

        Helpful (4)
      • June 22, 2017

        3 1989 LX - theunderdog Installation Time: Afternoon

        Header fitment

        These are descent headers but for those with gt40p heads I do not recommend these. It is a tight fit for spark plug #4 even with 90 degree spark plug wires. Header touches the spark plug boot (4) so I will be going with different headers now

        Helpful (3)
      • April 15, 2017

        5 1987 GT - ChandlerH Installation Time: Full Day

        Mustang 87 gt

        Amazing headers very very loud! And sound great adds good actual power.

        Helpful (4)
      • February 16, 2017

        5 1984 Other - WilliamM Installation Time: Afternoon

        Headers

        good fit complete and fit well better than the off road pipes

        Helpful (5)
      • August 04, 2016

        3 1990 Other - Kakarotyo7

        Easy installation great headers

        Great headers gives your fox a deep sound, shaft a Lil tight. Took about a hour to install, would of gave 5 stars but didn't come with COPPER gasket just a plain gasket. Also I recommend getting stage 8 header bolts.

        Helpful (4)

      Questions & Answers (5 answers)

      5 Top Rated Questions

      Would these headers fit the Gt-40p heads?

      • The MAC Chrome Unequal Shorty Headers are not designed to fit the revised plug locations of the GT40P Heads.

      Helpful (4)

      Will these work with gt40 heads?

      • The MAC 1-5/8 in. Chrome Unequal Shorty Headers would be compatible with stock spark plug angle heads. This will include the GT40, GT40X, and various other GT40 aluminum heads. These headers would not work for GT40P heads with the revised spark plug angle. For GT40P heads, you would want to look at the headers designed for this spark plug angle, linked below: https://www.americanmuscle.com/mac-ceramic-unequal-shorty-7993-gt40p.html

      Helpful (1)

      Will these headers bolt up to a MAC H pipe?

      • Yes, we would recommend the off-road h-pipe #40067 for absolute fitment.

      Helpful (0)

      Will these work with my 351 Windsor?

      • Unfortunately, these Mac headers will not be able to fit on a 351 Windsor motor, there will be clearance issues within the engine compartment.

      Helpful (0)

      will the headers bolt on to pypes xpipe?

      • These headers will not mate up to the Pypes x-pipe perfectly. I would recommend purchasing the accompanying MAC off-road pro chamber #40071 or the off-road h-pipe #40067 for absolute fitment.

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Driver side header
      • (1) Passenger side header
      • (16) Header Bolts
      • (2) Gaskets
      • (4) Threaded Bolts and Nuts
      • Bracket and Hardware

      Tech Specs

      Header Specifications
      Header Type: Short Tube Finish : Chrome
      Type Mid Pipe Required: Standard Fitment: 1979-1993 5.0 V8 Mustangs

      Will It Fit My Mustang

      • GT - 87, 88, 89, 90, 91, 92, 93
      • LX - 87, 88, 89, 90, 91, 92, 93
      • Other - 79, 80, 81, 82, 83, 84, 85, 86