73-87chevytrucks.com

73-87 Chevy _ GMC Trucks => Performance => Topic started by: jimmy38fan on September 14, 2007, 08:12:13 am

Title: true dual exhaust
Post by: jimmy38fan on September 14, 2007, 08:12:13 am
I have a 87 K-10 with a 350 that I'm wanting to put true dual exhaust on it, now that it's emission exempt. Right now I have the cat with a Flowmaster that splits into duals. Muffler shops won't touch it because of the converter. I was thinking of getting headers and ordering a dual exhaust kit from  . Has anyone ever bought one of these kits, and if so, how do they fit?
Title: Re: true dual exhaust
Post by: VileZambonie on September 14, 2007, 10:00:56 am
Just find yourself a good exhaust shop who will do it and just tell the guy cash no receipt. Bolt on's suck big time! Even stop in at a Meineke and talk to a talk and ask him if he can do it on the side.
Title: Re: true dual exhaust
Post by: 1973c20 on September 14, 2007, 11:07:12 am
What is it like talking to a talk? :p
Title: Re: true dual exhaust
Post by: 197 on September 14, 2007, 03:37:03 pm
I just got mine done. I didnt have a cat to start off with. They didnt say anything when I bought it in. I got true duals also. You will be happy with a true dual set up.
Title: Re: true dual exhaust
Post by: VileZambonie on September 14, 2007, 04:06:42 pm
talk tech close enough  :P
Title: Re: true dual exhaust
Post by: 1973c20 on September 14, 2007, 06:44:01 pm
Of course you didnt have one 197 nor did they say anything because yours is a '73 which is before they started putting them on the trucks. I think anything after 1978(?) is required to have a cat. Jimmy: do you know anyone thats skilled at welding? Because if so you could buy a kit and have him install it.
Title: Re: true dual exhaust
Post by: 87GMC2WD on September 16, 2007, 08:57:27 pm
i have an 87 witha 350 and i had mineke put on a true dual 2 1/4" with two true flow cats and two true flow mufflers. ran me about 800 bucks. wasnt too bad and its sounds great with the 3in tips. they had no problem doing mine. though im thinking about doing headers and putting on two glasspacks
Title: Re: true dual exhaust
Post by: FlatBlack77 on September 16, 2007, 10:30:57 pm
Of course you didnt have one 197 nor did they say anything because yours is a '73 which is before they started putting them on the trucks. I think anything after 1978(?) is required to have a cat.

I think it was after 1977 cause my 77 has one and it says in the manual(still in good shape too) about how vehichles are required to have cats now blah blah blah.
Title: Re: true dual exhaust
Post by: 1973c20 on September 16, 2007, 11:29:20 pm
Haha i wasn't sure, i knew it was somewhere around there.
Title: Re: true dual exhaust
Post by: jays2w87 on September 22, 2007, 12:57:11 pm
Ville is right. Just look around . You can find someone with a bender and stock and pay them cash. I have a guy in my area . He'll do anything he dont care. Cash no way to track it. That works for me cause 9 out of 10 I'm running something that breaks the rules .
I actually found this guy years ago , he said he wouldnt do it so I asked.... Do you know anyone that will do it for cash. That changed the whole story. Now if I need something I go to him.
Title: Re: true dual exhaust
Post by: Captkaos on September 22, 2007, 11:13:15 pm
1975 what when they started with Cats/Unleaded Fuel. 
Title: Re: true dual exhaust
Post by: 1973c20 on September 22, 2007, 11:53:50 pm
well i think '75 was for cars and then '77-'78 was for trucks (this is what my friend said whos a mechanic)
Title: Re: true dual exhaust
Post by: Captkaos on September 23, 2007, 12:06:59 am
That wasn't a guess, it was 1975 for trucks under 6001 GVW, which is ALL 1/2T's
Title: Re: true dual exhaust
Post by: 1973c20 on September 23, 2007, 12:26:22 am
well you know more then i do so it's all good :P
Title: Re: true dual exhaust
Post by: VileZambonie on September 23, 2007, 02:17:01 am
Yup 75 was the 1styear they added the ole pancake pellet converter
Title: Re: true dual exhaust
Post by: 1973c20 on September 23, 2007, 02:49:55 pm
Alrighty so now that we have that settled, I wonder if JImmy38fan figured out what he's going to do yet.
Title: Re: true dual exhaust
Post by: 75 C20 on September 23, 2007, 08:04:33 pm
not to steal this post but my 75 didnt have a cat on
Title: Re: true dual exhaust
Post by: 1973c20 on September 24, 2007, 11:37:56 am
was the exhaust stock on it? if so maybe they implemented it mid-year.
Title: Re: true dual exhaust
Post by: ccz145a on September 24, 2007, 12:58:25 pm
I believe in 1975 that if your truck was over a certain gross weight then cats were exempt. I have a half-ton with the towing pkg 6500gvw -- cats were not required.
Title: Re: true dual exhaust
Post by: 1973c20 on September 24, 2007, 10:44:27 pm
Well as previously stated, cats were for vehicles under 6100gvw. And because of that, then I would assume 75C20 doesn't have one because it's a 3/4 ton. See, learning is a good thing! :P