FE side pipe upgrades

[fordracing65]

Wow, after looking at those numbers it seems a no brainer.

[Jeff Frigo]

I would like to see some independent data. Also, what is stock?

[kbutler971]

X2 on the Classic Chambered upgrade over my restrictive OEM CCX pipes which were in pretty bad shape after 20+ years. Followed the instructions on the CC website and used my OEM collectors, mounting brackets, etc. and everything fabbed up fine. I went with the 20" x 3" packed, new turnouts and internal expanders on my 428/370 RWHP motor. No pre-post dyno testing but sensible improvement in throttle response and breathing was significant and real. Noise also increased, not terrible at low rpm/load but alot sharper at WFO. Earplugs all the time now. To do over I'd maybe go with 22" or 24" packed mufflers for noise attenuation. Great people to do business with too.

[fordracing65]

Originally Posted by Jeff Frigo

I would like to see some independent data. Also, what is stock?

Stock on a Kirkham, not stainless

[RICK LAKE]

HOLY PIG SH!T. What a fish story this one is, The only thing I found about this story is the pressure readings that all motors want and need back pressure to product the best power. 1.4-2.5hg is the idea area for the best of both. A 500 cubic inch motor is going to have a higher numbers than a 427 motor. There have been test done years ago with mufflers and high flow mufflers. Over all you will gain about20-40ft of torque, 35-40 HP with a BB motor at 6,500 rpm. The choice is noise. I have street pipes and race pipes. Streets are quiet. On some tracks you are allow only 98-103 decibels. Back pressure 5.8hg at 6,000 rpms
My race pipes are in the 110-115db range. back pressure at 6,000 rpms 2.7hg at 6,000 rpms. Power different is there. If you can fit 2.5" dual exhaust under the car and out the back you will have the best of both worlds. Oval pipe helps with ground clearance. Have not seen alot of info on good or bad with this. Nascar runs them.
How with these magic pipes I can go to 720ft of tork and 640 RWHP with a 482 and 10.5 compression.WOW. Should buy 2 sets for when they wear out the first set. I heard a story about a guy called Jack and magic----- sorry different fairy tale. I too would like to see real life testing. Bet the 1/4 mile racer would like another 100HP in there cars. They would be running low 8.0's. That enough. Rick L.

[Jeff Frigo]

Originally Posted by RICK LAKE

HOLY PIG SH!T. What a fish story this one is, The only thing I found about this story is the pressure readings that all motors want and need back pressure to product the best power. 1.4-2.5hg is the idea area for the best of both. A 500 cubic inch motor is going to have a higher numbers than a 427 motor. There have been test done years ago with mufflers and high flow mufflers. Over all you will gain about20-40ft of torque, 35-40 HP with a BB motor at 6,500 rpm. The choice is noise. I have street pipes and race pipes. Streets are quiet. On some tracks you are allow only 98-103 decibels. Back pressure 5.8hg at 6,000 rpms
My race pipes are in the 110-115db range. back pressure at 6,000 rpms 2.7hg at 6,000 rpms. Power different is there. If you can fit 2.5" dual exhaust under the car and out the back you will have the best of both worlds. Oval pipe helps with ground clearance. Have not seen alot of info on good or bad with this. Nascar runs them.
How with these magic pipes I can go to 720ft of tork and 640 RWHP with a 482 and 10.5 compression.WOW. Should buy 2 sets for when they wear out the first set. I heard a story about a guy called Jack and magic----- sorry different fairy tale. I too would like to see real life testing. Bet the 1/4 mile racer would like another 100HP in there cars. They would be running low 8.0's. That enough. Rick L.

Rick, my man.

[Mdman352]

Originally Posted by Jeff Frigo

I would like to see some independent data. Also, what is stock?

Jeff,
Don't be a dick.

[Jeff Frigo]

Originally Posted by Mdman352

Jeff,
Don't be a dick.

Im not being a dick, you will know it when I am. I just don't believe it. I guess Rick is a dick also?

[Rare Iron]

Originally Posted by Jeff Frigo

I would like to see some independent data. Also, what is stock?

Here we go - the non-believers, the skeptics, the conspiracy theorists.

Smart guy, why don't you contact Kinetic Racing Engines (Chris Gesek), in Westland, MI. I guarantee you, he knows more than YOU do about engines. Ask him if he supplied BS dyno #'s to me.

As far as the comment about "old" technology in these mufflers, what would you rather see in a tube-style muffler flowpath? A cool-looking object? Some deflectors (walls) like you find in a Flowmaster muffler? Some curly-cues like in a Spintech? ANY OBJECT or obstruction you put in the flowpath of a tube style muffler like this is going to cause backpressure, & backpressure will hurt performance. Granted, the proper flowpath diameter will maintain flow velocity, which you need in any of these Cobras. BUT, a lot of these Cobra kit mufflers have under a 2" flowpath diameter through the mufflers, & those are horsepower killers..............................no matter what your technology. Face it, some designs can't really be re-invented.