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Discussion Starter · #1 ·
Since I don't have the actual car, just a drive train from a 1976 Mustang II could someone please tell me what size exhaust pipes were stock on the 302 V8 two barrell with automatic transmission?
 

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Discussion Starter · #2 ·
thank you to anyone who replied, the post below from another forum summarizes really well all the different pipe sizes that were mentioned:

2 inch coming off the manifolds (Y-pipe).

1 3/4" on the branches.

2 1/4" for the tail pipe.
 
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Just have an exhaust shop fab you up a dual 2 1/4" exhaust using any performance muffler or mufflers you like.

If you want it to look original, you'll want two pipes running down the passenger side of the car, with a dual-in/dual-out muffler.

Other options are:

Two pipes down one side with a dual in/single out (go 2.5" or 3" out if you do that).

Two pipes into one at the stock location, then a single pipe and muffler out (not a bad way to go, go 2" or 2.25" down, then 2.5 or 3" out).

Two pipes into mufflers that dump at the rear or turn out in front of the rear wheels (local laws will dictate that one)

Sidepipes (Ever see an old AC Cobra or 60s Vette?)

Whatever you do though, don't go back with the stock sizes... just an exhaust system alone will make a noticeable difference in the way a 302 powered II drives, throw a 4-bbl carb, intake, headers, and exhaust on one and take a fox-body owner for a ride and they'll damn near convert to our weird little Pinto-based-econo-car-worshipping religion.
 

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Discussion Starter · #4 ·
Since I don't have the car just the engine I was just wondering what the stock pipe size was so that when I start my performance upgrades I have a baseline. I am considering long tube headers into a true dual no catalitic converted and eventually dropping the motor into a '68 Mustang coupe and running the pipes out the sides with Cherry Bomb glass packs on it, old school style.
 
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