1969 Mustang exhaust routing

[OldsPower]

Hello,

I've been a member here for a while, but I don't visit this site very often (I'm a GM man, not a Ford guy), only having four posts about a crappy idle on an '87 3.8 Thunderbird.

anyways, my father owns a '69 Mustang Grande, 302 C4,

and the stock single muffler is rotted out with the rest of the underbody. Because of that, my pop would like to have a muffler shop install a dual exhaust using two 40 Series Flowmaster mufflers. My Cutlass has dual Flowmasters, and it sounds badass for a V-6.

I remember reading somewhere that the rear brake lines were routed different on single vs dual exhaust Mustangs that year, and if a single exhaust is upgraded to dual, the brake lines should be moved because the second exhaust pipe passes too close.

Is this true, or was someone just blowing smoke up my ass?

 

[WORTH]

I've got home made duals on my 69 and 70 and didn't see a problem on either adn I've been driving both for 4-5 years without a problem.

 

[69 302/351c]

Agree with WORTH. Both my 69 coupes have duals and Flows with no brake line problems.

 

[chepsk8]

I swapped Chepie over, the shop custom bent the pipes, no problem.

What about tips? Will you just turn down the ends aka BOSS 302, or get tips and use the cut-out valence pan?


(BTW - I too am a closet OLDS guy, having owned a 74 H/O Pace car for many years, and now wanting another again!)

 

[bnickel]

it was only the 65-66 cars that had a problem with brake lines. the 67 and up cars don't have that problem. my grandfather was an olds guy, he sold them for many years as well. i would eventually love to build a cutlass, either a 69-72 or an 85-87 H/O or 442.

 

[OldsPower]

thanks guys.

he'll probably go with cheap turndowns. he doesn't want to put much money into this car, and he only drives it maybe a hunderd miles a year. it has 39,XXX original miles, original engine. the trans and rear axle have been replaced sometime in the car's history though.


I'm a GM guy, my primary car at the time i created this account was my Cutlass, hence my username. Now i drive a Colorado Z71, which i took delievery of two weeks ago.

My grandfather owned an '84 Cutlass Supreme, light blue with color-keyed rally wheels and white-letter Goodyear GT Radials, that car had class!

once i graduate college and get setteled out on my own, i'm gonna pick up a clean early-mid 80's Regal or Cutlass, and drop a mild 350/700R4 into it. nothing special, just something to sound good, light up the rear tires, and take care of all the rusted-out Fox-body 302 Mustangs around here driven by high school kids a couple years younger than me who think they're badass