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I cut that glasspack off last night. Now I have the two hollow converter cases releasing the exhaust right behind the passenger side door. It's plenty loud, and I love it! You just can't beat the way a straight-piped Ford V8 sounds.
Did you weld pipe inside the center of the cases? You are doing no good for flow if they are just hollow, they are still muffling a bit that way as well.
Not sure exactly how loud you are trying to go for, but cherrybombs are very loud. sounds like you just want open exhaust. let it exit right out of the manifolds :-). On my 1973 F100 with a 302 it has true dual exhaust, no cats, and two 33-series Ravin mufflers which sounds loud to everyone who hears the truck run
It is screwing up the flow so yeah, you are probly losing some power. Putting pipe in them will also cut down on any drone that may be comming from them. I never bothered with the pipe in the cat on my minivan and you can really hear the drone.
Thanks for the tip on the Cherry Bombs... I might try one later on down the road.
I can hear the "drone" in mine when I lay in it, but I kinda like it. It makes it sound like a Flowmaster which I put on for free. That's always a plus. I'll probably either cut them completely off or just weld pipe into them later. I'm tired of messing with them for now. lol.
As far as the flow goes, I can't see it being any worse as it was when the cats were still "packed"...
Wayta go guys with the loud exhaust? anyone set off car alarms? I pulled into a parking lot the other day and set off like 3. One Escalade, the owner came runnin out to see whats goin on.
Wayta go guys with the loud exhaust? anyone set off car alarms? I pulled into a parking lot the other day and set off like 3. One Escalade, the owner came runnin out to see whats goin on.
I do. It's funny when you get people to check their cars
Dude...I did almost the same... but I just cut both cats instead of gutting them. What I did thugh (93 f-150 302), I went with a 3" single pipe and a single-chamber Flowmaster....now its loud, and deeeeeep. My neighbor, who is about 500 feet away, said she can hear my truck when i start it. I can be Idling in the parking lot, 600RPMS, and car alarms start beeping. Its funny as hell.
Now, I think its just a bit loud...lol, There are some pics of how i did it in my gallery.
I was kind of thinking today of cutting BOTH gutted converters off, running two pipes back across the transmission crossmember, joining them into a 3" Cherry Bomb Glasspack, then running 3" duals from there to the rear, splitting to each corner of the bumper at the back. I expect that to be pretty doggone loud.
I wish that I could do 4", just to give it more tone, but my local muffler shop told me that they didn't have a mendrel big enough to bend the 4" pipe. The biggest they could bend would be 3".
Now, on any glasspack, isn't it the more you drive it, the louder it gets? I was wondering about this...
Yes, usually a glasspack will burn out as its used. For the 4" pipe, you should be able to find pipe pieces at several online sites and make your own system if you can weld.
IMO, run 3-4' of the 4" after the mufflers and it would be DEEP sounding. Probably change the entire sound. I would not use 4" for the whole system. To heavy, too expensive. My truck had dual 4" IIRC after the glasspacks years ago, about 4' of it over the axle on each side. Wasnt loud due to the 24" packs, but it rattled the house windows at idle from the reverb caused by the big pipe. Got a lot of looks from people sitting next to me at the traffic lights.
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