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Discussion Starter #1
Hey, I'm looking to buy a cat-back exhaust system for my '77.
I've been looking at the Magnaflow system (http://www.summitracing.com/parts/MPE-16836/) but it states that it is for a '74 Corvette... I need to know whether there is a difference between the '77 and '74. I wouldn't think there would be, so I'm assuming this will just bolt right up, but I don't want to take any chances. (And yes, I tried using the search function but couldn't find anything specific)
Thanks for the help! :thumbsup:
 

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I'm not sure why or how they advertise it as a "cat back" system when the picture obviously shows a full system manifold back. :crazy:

I believe the '74 had no cats too.

This system will probably work fine if you replace the entire system and eliminate your cats.
 

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you could check other exhaust companies/sites and see if the part number for the 74' is the same as the 77'? It might work. Good luck.
 

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A lot of times I'll contact the manufacturer for clarifications. Maybe they can help.
 

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This is what I read....
<LI class=pdetail>Exhaust System Kit; Stainless Steel Manifold-Back System; 5 x 8 x 14 in. Mufflers; 2.5 in. Tubing; Dual Rear E
Doesn't say cat back
 

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Discussion Starter #6
You guys are right, I misread the part description, it is a manifold-back system...
I'm looking at parts through Summit because my school has a deal with Atech Motorsports (basically summit) and I get a subsantial discount on parts.

So now I'm wondering if I could get that and just cut the pipe to fit to my Hooker headers... May take a little bit of work, but shouldn't be too hard.
 

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Get the car to an exhaust shop.

Tell them you want 2.5" true dual exhaust with a pair of Magnaflow mufflers and stealth the tips.

A shop will be able to do a MUCH better job of cutting to fit and tucking everything up better.

Not only that, all the joints will be welded.

Overall, a custom in house job will be better quality and you know it'll fit right when their done.

The work is warrantied too.
 

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You guys are right, I misread the part description, it is a manifold-back system...
I'm looking at parts through Summit because my school has a deal with Atech Motorsports (basically summit) and I get a subsantial discount on parts.

So now I'm wondering if I could get that and just cut the pipe to fit to my Hooker headers... May take a little bit of work, but shouldn't be too hard.
If you can get the system for a substantial discount I'd recommend buying it, provided you don't need cats for inspection. The Magnaflow system is great quality and sounds terrific. You can easily fab a couple of short pipes to go between the trans crossmember and your headers, probably using some of the Magnaflow pipe that comes with the system.

Here are a couple of pics of basically the same system and a short vid of the sound. Keep in mind that the LS1 engine has a different firing order than the older 350 so it sounds a bit different, and the X-pipe makes a difference in the sound also.

:cheers:

Rick B.




 

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Discussion Starter #9
If you can get the system for a substantial discount I'd recommend buying it, provided you don't need cats for inspection. The Magnaflow system is great quality and sounds terrific. You can easily fab a couple of short pipes to go between the trans crossmember and your headers, probably using some of the Magnaflow pipe that comes with the system.

Here are a couple of pics of basically the same system and a short vid of the sound. Keep in mind that the LS1 engine has a different firing order than the older 350 so it sounds a bit different, and the X-pipe makes a difference in the sound also.

:cheers:

Rick B.
Rick, that sounds amazing! I've emailed Magnaflow to see if there is some physical aspect of that system that would not allow me to install it. If not, I will most likely get that system and figure out a way to make it fit. :partyon:
 

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They also have the same system with single downturned tips like your stock exhaust. I don't see why you would have any problems installing it if you have a trans crossmember with 2 exhaust holes. BTW, don't hold your breath waiting for a reply to your email. My system was missing the 2 rubber hangers so I emailed them about getting a pair. Never heard anything, but I did find hangers at the local chain parts store.

:cheers:

Rick B.
 

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Discussion Starter #11
They also have the same system with single downturned tips like your stock exhaust. I don't see why you would have any problems installing it if you have a trans crossmember with 2 exhaust holes. BTW, don't hold your breath waiting for a reply to your email. My system was missing the 2 rubber hangers so I emailed them about getting a pair. Never heard anything, but I did find hangers at the local chain parts store.

:cheers:

Rick B.
Yeah, I see what you mean. Still haven't heard from them. But I went ahead and ordered it, so I'm pretty stoked! Can't wait to get my car up and running.
 
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