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Old 12-30-2012, 02:40 PM   #1
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X-Pipe Confused

Ok. I am confused as to what actually came on the C5 and why they are better or what...

My car has an X-pipe in the back that looks like it came off the car and it looks like the car has straight thru exhaust. Did the car come that way or did ithave an X-pipe that was removed or did the guy have it in the back in hopes of putting it on...

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Old 12-30-2012, 03:48 PM   #2
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OK. Mine has an H there instead of an X. Is the H factory or what....

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Old 12-30-2012, 04:05 PM   #3
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The H pipe is factory.
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1977-stock

2005-A+A Supercharger-RPM trans-3000 stall Yank converter-Melrose headers-Xpipe-Borla touring mufflers-6psi of alcohol-tuned at Slowhawk Performance-573 RWHP 495 RWTQ-11.4 in the 1/4 at 122 mph spinning 1st and breaking loose in 2ndneed slicks!!!!!

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Old 12-30-2012, 04:23 PM   #4
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Well that fits because after scrutinization it appears the X pipe in the back has never been installed.

Whats gained by changing the pipes...
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Old 12-30-2012, 04:43 PM   #5
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You will gain some power with an X-pipe over an H-pipe. The X pipe will give you a more raspy exhaust. The H-pipe is more of an muscle car tone. A side not 99% of aftermarket exhaust for C5/C6 are made with X-pipe. That has to mean something.
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1977-stock

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http://www.youtube.com/watch?v=Ia9w-bVmQsQ my burn out at 2:53
Old 01-05-2013, 11:08 AM   #6
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http://forum.grumpysperformance.com/...hp?f=56&t=1503
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Old 01-05-2013, 02:26 PM   #7
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Thanks Grumpy! That was a bit of a read but I know ALOT more about the X pipe. Some of it was above my head but I took away that it helps with the pulse equalization since the motor fires every 90deg. That then helps the scavaging affect that helps draw out more of th exhaust. All of which then brings a little crisaper tone.

I like the dual X pipe, but what are the pipes ends that protrude just past the headsers exit in front of the Xs for.... they look like they are just capped off...

Those confused me some what.

Also, the article says that three inch exhaust is the way to go but what I have found in the aftermarket have all been 1 7)8 (that question mark key doesn't work on my garage computer).

I plan on getting a cold air intake and an actual BB intake manifold with thier throttle body. Would 3 inch be the way to go for me or would the 1 7)8 be the way to go to keep from getting the cherry exhaust when I do the cam...

Thanks a bunch.

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Old 01-06-2013, 08:13 AM   #8
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Quote:
Originally Posted by C5 Dude View Post
Thanks Grumpy! That was a bit of a read but I know ALOT more about the X pipe. Some of it was above my head but I took away that it helps with the pulse equalization since the motor fires every 90deg. That then helps the scavaging affect that helps draw out more of th exhaust. All of which then brings a little crisaper tone.

I like the dual X pipe, but what are the pipes ends that protrude just past the headsers exit in front of the Xs for.... they look like they are just capped off...

Those confused me some what.

Also, the article says that three inch exhaust is the way to go but what I have found in the aftermarket have all been 1 7)8 (that question mark key doesn't work on my garage computer).

I plan on getting a cold air intake and an actual BB intake manifold with thier throttle body. Would 3 inch be the way to go for me or would the 1 7)8 be the way to go to keep from getting the cherry exhaust when I do the cam...

Thanks a bunch.


I'm pretty sure you mean 1 7/8". That is the size of the header tubes off of the flandge that bolts to the cylinder head. The tubes on the header then form together into a 3" collector. From the collector on most aftermarket systems for the C5's the exhaust would be 3" to the cats, then step down to 2 3/4" to the X-pipe then bolt to the mufflers. If you plan on changing out the exhaust, with those mods you want to do, I would go with a full exhaust from headers with the 3" exhaust, to the X-pipe. Here is an examplehttp://www.melrosecorvette.com/97-00...header-system/ Good luck.
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1977-stock

2005-A+A Supercharger-RPM trans-3000 stall Yank converter-Melrose headers-Xpipe-Borla touring mufflers-6psi of alcohol-tuned at Slowhawk Performance-573 RWHP 495 RWTQ-11.4 in the 1/4 at 122 mph spinning 1st and breaking loose in 2ndneed slicks!!!!!

http://www.youtube.com/watch?v=Ia9w-bVmQsQ my burn out at 2:53
Old 01-06-2013, 09:01 AM   #9
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Quote:
Originally Posted by C5 Dude View Post
Thanks Grumpy! That was a bit of a read but I know ALOT more about the X pipe. Some of it was above my head but I took away that it helps with the pulse equalization since the motor fires every 90deg. That then helps the scavaging affect that helps draw out more of th exhaust. All of which then brings a little crisaper tone.

I like the dual X pipe, but what are the pipes ends that protrude just past the headsers exit in front of the Xs for.... they look like they are just capped off...

THOSE EXHAUST CUT OUTS ARE OPENED AT THE TRACK ONLY TO REDUCE EXHAUST GAS FLOW RESTRICTION

Those confused me some what.

Also, the article says that three inch exhaust is the way to go but what I have found in the aftermarket have all been 1 7)8 (that question mark key doesn't work on my garage computer).
3" is the exhaust size used PAST THE HEADER COLLECTORS, NOT THE HEADER PRIMARY SIZE

I plan on getting a cold air intake and an actual BB intake manifold with thier throttle body. Would 3 inch be the way to go for me or would the 1 7)8 be the way to go to keep from getting the cherry exhaust when I do the cam...

Thanks a bunch.


on most SBC or LS based high performance engines of at least 350 cubic inches, designed to exceed 400 hp, the GREEN ARROW primaries should be 1 3/4" and at least 33 -38" long the RED ARROW or exhaust will usually perform well with a 3" diameter
hope that helps, btw you can calculate whats needed

http://forum.grumpysperformance.com/...php?f=56&t=185

http://forum.grumpysperformance.com/...php?f=56&t=495
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Old 01-06-2013, 09:51 AM   #10
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Thanks! Does the 3" diameter need to continue all the way to the mufflers or can you go down to whatever the muffler manufacturers make.

Also what muffs do you recommend for a muscle car sound. ( I dont like the riceer sound)
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Old 01-06-2013, 10:14 AM   #11
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3" must continue to at least the (X) pipe
exiting into twin 2.5" past that point , is ok for most applications
a 3" collector has about 7.1 sq inches of cross section, a 2.5" has about 4.7 sq inches, so twin 2.5" exhaust is still going to reduce restriction, IF the mufflers are not restrictive
http://forum.grumpysperformance.com/...hp?f=56&t=1730
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Old 01-06-2013, 02:04 PM   #12
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Quote:
Originally Posted by grumpyvette View Post
3" must continue to at least the (X) pipe
exiting into twin 2.5" past that point , is ok for most applications
a 3" collector has about 7.1 sq inches of cross section, a 2.5" has about 4.7 sq inches, so twin 2.5" exhaust is still going to reduce restriction, IF the mufflers are not restrictive
http://forum.grumpysperformance.com/...hp?f=56&t=1730
Is all of this moot if I have any cats at all or will high flow cats be OK?
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Old 01-06-2013, 02:35 PM   #13
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Quote:
Originally Posted by C5 Dude View Post
Is all of this moot if I have any cats at all or will high flow cats be OK?
the better HIGH FLOW CATS won,t hurt a thing, they offer very little restriction to flow, the cheap cats , old partly clogged cats or use of restrictive mufflers are a different deal.

http://forum.grumpysperformance.com/...p=29318#p29318
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Old 01-06-2013, 05:46 PM   #14
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Originally Posted by grumpyvette View Post
the better HIGH FLOW CATS won,t hurt a thing, they offer very little restriction to flow, the cheap cats , old partly clogged cats or use of restrictive mufflers are a different deal.

http://forum.grumpysperformance.com/...p=29318#p29318
Which muffs and cats do you recommend?
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Old 01-06-2013, 05:49 PM   #15
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Quote:
Originally Posted by C5 Dude View Post
Which muffs and cats do you recommend?
How loud do you want to be?
........will you also be listening to your radio or have conversations with any passenger?

I run with a BB Fusion only because I have neighbors that could put me behind bars. When I am out of the neighborhood then are open...........until I return. Then I close them down.
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