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#1400126 03/05/2021 7:33 PM
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'Bolter
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Doing research and I'd love to run an X-pipe. I'm looking at the spacing on my 3600 wondering where the hell it would cross over as I've got a 4" driveshaft and the exhaust is going to exit out of the side in front of the rear wheels.

Thoughts?

Second attempt at an Edit. - V8 383 tied to a TKO600

Last edited by Montana 54 Chevy; 03/05/2021 8:03 PM. Reason: Engine details
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Insomniac
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Depends on the engine, I'm told. You didn't specify what you have.


Gord 🇨🇦
----
1954 1/2 ton 235 4 speed
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'Bolter
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Originally Posted by Gord&Fran
Depends on the engine, I'm told. You didn't specify what you have.


First edit didn't update. See above

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Kettle Custodian (pot stirrer)
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What kind of racing are you doing, and do you have a specific RPM range where you need to develop maximum torque? Most fancy exhaust systems on street-driven vehicles are simply eye candy to impress the mouth-breathers at car shows, with no measurable power advantage that justifies the effort or expense involved.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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'Bolter
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Originally Posted by Hotrod Lincoln
What kind of racing are you doing, and do you have a specific RPM range where you need to develop maximum torque? Most fancy exhaust systems on street-driven vehicles are simply eye candy to impress the mouth-breathers at car shows, with no measurable power advantage that justifies the effort or expense involved.
Jerry

Jerry you never fail to make me laugh. "mouth breathers" haha!

No racing. In the research I had done folks had said it cuts down on the noise level at the lower RPMs. I couldn't care less, but if I have any hope of getting the wife in the truck one of these obnoxious things you can hear from 3 blocks away isn't going to do it. Not really my style anyway. So at the end of the day it's less to do with power and more to do with sound levels. However, I am fully open to not using an x-pipe at all, as it would make my life infinitely easier.

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The simplest way to make a low restriction exhaust system that won't give the neighbors cause to break out the varmint rifle every time you crank up the engine is to put a pair of mufflers for a mid-1970's Cadillac on your truck. Each one has 2 1/2" pipes in and out, and one of them is designed to flow the exhaust stream from a 500 cubic inch engine. Low restriction and quiet- - - -sounds like a win/win situation to me! Any muffler shop should be able to bend up a set of pipes to accommodate that system.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
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I tried an x-pipe on my 1980 pickup. It had a 350 V8. I added headers and there was a noticeable improvement. The x-pipe was added later and there was no noticeable change in performance, gas mileage or exhaust noise. Waste of money, IMO.

Last edited by Gord&Fran; 03/05/2021 11:35 PM.

Gord 🇨🇦
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1954 1/2 ton 235 4 speed
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'Bolter
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Key to low noise without power loss: large internal muffler volume (diameter X length).

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"Hey! I sound like Darth Vader!!
"Hey! I sound like Darth Vader!!
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I quieted mine down by copying what the GM engineers did on my '98 C3500.

From this to that.
Attachments
1952suburban470.jpg (58.12 KB, 98 downloads)
1952suburban472.jpg (55.94 KB, 100 downloads)
1952suburban478.jpg (59.89 KB, 95 downloads)

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If no racing in mind then a simple equalizer tube will accomplish the same noise reduction and use a lot less space than an X pipe. If no racing with mega power and huge rubber WHAT THE HECK do you need a TKO 600 for? At least you don't have a wimp T5 to puke its guts onto the pavement.


Evan
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Back in the day ('70's) some of us used to run Chrysler Imperial 440 mufflers on our Mopars. Imperials came with single exhaust for a 440 and like Jerry's Cadallic muffler had 2/1/2" inlet/outlet. The original Mopar mufflers had a big crimp in the end for some reason and we always wanted the originals. This is a currently available option.

I ran a pair of the 440 mufflers on my 340 for a while with 2 1/2" off the headers to the mufflers and slash cut tips that exited in front of the rear wheels like the 340 6 Pak Cudas. Sound was very acceptable and at the dragstrip dyno power was about like open headers.

I do have a x-pipe on the Miata's 302 and it does give it a different sound. More of a European sports car sound as opposed to a American hot rod rumble. I like it.

Dual exhaust with 2 1/2" dumping behind the rear bumper with the mufflers mentioned above and with a xpipe (if plumbing is worked out) would make for a nice, quite, high flow performance package.

RonR

Last edited by moparguy; 03/06/2021 6:45 PM.

1951 3600 with Clark flatbed, T5, 4.10 rear
1970 340 Duster
1990 5.0 V8 Miata (1990 Mustang Gt Drivetrain)
1964 CJ5
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'Bolter
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Originally Posted by coilover
If no racing in mind then a simple equalizer tube will accomplish the same noise reduction and use a lot less space than an X pipe. If no racing with mega power and huge rubber WHAT THE HECK do you need a TKO 600 for? At least you don't have a wimp T5 to puke its guts onto the pavement.

A good family friend died before he could finish his build. I couldn't get a junk yard motor for what they would let me pay for his new crate 383 and tko600 combo.

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'Bolter
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Originally Posted by MNSmith
I quieted mine down by copying what the GM engineers did on my '98 C3500.

From this to that.
Looks good!

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'Bolter
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Originally Posted by Gord&Fran
The x-pipe was added later and there was no noticeable change in performance, gas mileage or exhaust noise. Waste of money, IMO.

My experience exactly. So on this truck a omitted any crossover or x-pipe to keep the exhaust simple and easy to remove.


1951 Chevy Panel Truck

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