1968 side pipe slip in mufflers
Burning Brakes
Joined: Jul 2016
Posts: 767
Likes: 74
From: Blaine MN
I just put the Hooker high flow muffs into my pipes, I wear ear plugs if i'm driving more than a few miles above 40mph (4.11 gears and 550ish hp), I think it's gonna make me deaf 
The old muffs were so bad I had to slit the side pipes to get em out, lost 5 pounds of rust (the pile was so big I had to weigh the stuff).
The old muffs were so bad I had to slit the side pipes to get em out, lost 5 pounds of rust (the pile was so big I had to weigh the stuff).
Thread Starter
Instructor
Joined: Sep 2018
Posts: 221
Likes: 10
They are aftermarket. The side pipe fits over the header, and I thought the muffler inside of the side pipe should butt up to the header, but it doesn’t because it is about 3-4 inches short of that, allowing it to slide around in there.
Last edited by derekd8915; Oct 20, 2018 at 08:34 AM.
Burning Brakes
Joined: Jul 2016
Posts: 767
Likes: 74
From: Blaine MN
I can make some measurements and take pictures, mine fit pretty snug and they only go in one way, The pipes slid onto the header about 3.5 - 4 inches and the muffs pretty much stop at the point the pipe expansion stops. let me know if pics or measurements will help. My headers and pipes are from Hooker, 1990's vintage, the muffs (Hooker high flow) were just purchased this month.
Burning Brakes
Joined: Jul 2016
Posts: 767
Likes: 74
From: Blaine MN
I can't hear anything either (for a while after I shut it off too), the high flow muffs are slightly quieter than open collectors (that was downright painful and won't be happening again unless I'm wearing ear plugs). But it's the price I pay for low restriction and it really made a big power difference over the old rusty small diameter glass packs (can spin the 295's from a 1500 rpm roll now with just a throttle snap, couldn't with the old ones).
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Instructor
Joined: Sep 2017
Posts: 169
Likes: 20
From: Westlake Ohio
Probably I am probably the only lunatic (bubba) here who made my own side pipes and baffled inserts. They sound incredible. I would have taken pictures but it looked like crap. I used baffles and the cone diffuser concept. I kept installing baffles and cones in till I got the sound I wanted. Look up Milan's Motor Sports on Facebook if your interested in listening to them. I was an interesting project. If and when they get loose, I just find some scraps and fab up new inserts.
