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Lowered 77, exhaust options?

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Old Oct 1, 2018 | 07:11 PM
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Default Lowered 77, exhaust options?

I'm looking at redoing my exhaust and was searching for low-profile mufflers/etc considering I stopped the mufflers before the rear suspension. I think it might be best to maybe do a full exhaust setup to help with ground clearance (lowered the 77 about 1.5-2") than try to tuck some mufflers under there. I do have a mild cam in the engine, so the 'rumble' isn't an issue, just trying to avoid it sounding to high pitched (fart can rockets). I was thinking Dynamax mufflers and researching a bit, but looking for some 'suggestions' for those that might have a 350 small block rumble and like their exhaust setup.
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Old Oct 1, 2018 | 08:11 PM
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Why not run the two stage chambered exhaust... The pipe size is the same as the stock pipe only there are two stages, one is the resonator the other is the muffler.

Here a video of the chambered exhaust.. It sounds great with a beater camshaft and it sounds great with a stock one. It can be ordered for a car with headers as well.

Personally.. I like the chambered system,, one as a resonator and the rear as a muffler. That's what is on the video in the lower section.

But the chambered system below is mellow and sounds way better than the the stock exhaust...

Willcox


Small block 72 with chambered.

https://willcoxcorvette.com/corvette...uminized-25571






Chambered: https://willcoxcorvette.com/corvette...uminized-25565

Last edited by Willcox Corvette; Oct 2, 2018 at 09:26 AM.
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Old Oct 2, 2018 | 06:11 AM
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I agree with Wilcox....I have the 2 stage on my 72 with a stock cam and it sounds great. I'm not sure any system would tuck up any better.




Brian
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Old Oct 2, 2018 | 09:28 AM
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I fixed the link on the exhaust in the post above and here is a picture of the entire system. Now I will also say, buy the 1973 rear exhaust hanger it.... it works great on any c3 for mounting the rear tips.
You'll find it here https://willcoxcorvette.com/corvette...-hangers-73-73


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Old Oct 2, 2018 | 10:38 AM
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You know my thoughts on this after thinking about it... You say your stopping the exhaust before the rear suspension? This might dictate a custom system that I'm pretty sure we can do but I'd have to call the manufacturer. The issue with these cars with full exhaust on them is that the rear pipe runs under the rear spring so you're limited to what you can do.... Possibly making a stage two system with both the resonator and the muffler before the exhaust.... I'm not sure, but I'll call the manufacturer if this is what you are wanting and see what options are available... email me to let me know at service@Willcoxcorvette.com

Willcox

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http://repairs.willcoxcorvette.com/
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Old Oct 2, 2018 | 11:41 AM
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Originally Posted by Willcox Corvette
You know my thoughts on this after thinking about it... You say your stopping the exhaust before the rear suspension? This might dictate a custom system that I'm pretty sure we can do but I'd have to call the manufacturer. The issue with these cars with full exhaust on them is that the rear pipe runs under the rear spring so you're limited to what you can do.... Possibly making a stage two system with both the resonator and the muffler before the exhaust.... I'm not sure, but I'll call the manufacturer if this is what you are wanting and see what options are available... email me to let me know at service@Willcoxcorvette.com

Willcox

https://willcoxcorvette.com/
http://repairs.willcoxcorvette.com/
i am looking at both options but either would be fine. I also have headers so all in all, it might just be a simple 1 pipe design in the end.....
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Old Oct 2, 2018 | 01:14 PM
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Originally Posted by onaqwst
i am looking at both options but either would be fine. I also have headers so all in all, it might just be a simple 1 pipe design in the end.....
Personally, I'd like to think the exhaust wouldn't drag at the rear spring.... but one key is to make sure you put the clamps side ways instead of downwards.

Willcox
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Old Oct 2, 2018 | 07:24 PM
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Sidepipes, real ones, no covers ...
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Old Oct 2, 2018 | 10:31 PM
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Originally Posted by myoriginal77
Sidepipes, real ones, no covers ...
I've seen too many leg burns in the past from side pipes.......
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Old Oct 3, 2018 | 10:30 PM
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Originally Posted by onaqwst
I've seen too many leg burns in the past from side pipes.......
Pretty rare with factory '69 sidepipes and covers...

GUSTO
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Old Oct 3, 2018 | 11:33 PM
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There are some square tube 4x2 exhaust piping available now for increased ground clearance. Maybe worth looking into.

-Stroke
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Old Oct 7, 2018 | 10:53 PM
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Originally Posted by Willcox Corvette
You know my thoughts on this after thinking about it... You say your stopping the exhaust before the rear suspension? This might dictate a custom system that I'm pretty sure we can do but I'd have to call the manufacturer. The issue with these cars with full exhaust on them is that the rear pipe runs under the rear spring so you're limited to what you can do.... Possibly making a stage two system with both the resonator and the muffler before the exhaust.... I'm not sure, but I'll call the manufacturer if this is what you are wanting and see what options are available... email me to let me know at service@Willcoxcorvette.com

Willcox

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http://repairs.willcoxcorvette.com/
Sent an email regarding this. I want to order but need to make sure I can get a set for headers.
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Old Oct 8, 2018 | 04:46 PM
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Originally Posted by onaqwst
Sent an email regarding this. I want to order but need to make sure I can get a set for headers.
Yes, just specify in the notes section (step 5 of checkout) that you have either full length or short headers.

Willcox
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Old Oct 8, 2018 | 05:08 PM
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Originally Posted by onaqwst
I've seen too many leg burns in the past from side pipes.......
Wear pants and boots instead of shorts and sneaks.
Doug
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