LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Project Bad Ass True Duals complete. Final pics inside...

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Old Aug 25, 2009 | 01:00 PM
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Default Project Bad *** True Duals complete. Final pics inside...

New video posted below and on post 103.

I have finally finished the true duals project for my 1995 Z28. The entire system is stainless steel and was made from Magnaflow mandrel bent pipes.

Here are the specs:
Flowmaster 3" to 2.5" reducer cones
Magnaflow stainless (5) J-bends, (4) L bends and (1) 45 degree bend
Woolf aircraft (2) 2.5" ultra tight radius L bends
Magnaflow dual in/out (internal X) muffler
Magnaflow X-pipe
Magnaflow stainless dual oval tips
Dynomax stainless cutouts
QTP electric cutouts
Lots of stainless Accu-seal clamps

I designed the cutout pipes to be easily removed and replaced with catalytic converters should the want or need ever arise. Takes about 30 minutes to do this. Also the whole thing can be easily removed rather easily just like a catback.

All pipes are stainless MIG welded and ground smooth for a seamless look. I polished the rear pipes exiting the muffler to a very shiny finish as well.

The exhaust sound is deep with absolutely no signs of rasp, popping or machine gun sounds in the 2K RPM range like what I had with the old Borla catback and ORY pipe. The sound volume at idle, as well as WOT, is similar to any other catback. Definitely not overly loud unless you open the cutouts. Maybe this is due to the Magnaflow X-pipe up front and the internal X-pipe in the muffler. The exhaust waves should certainly be balanced with this setup.

Ground clearance is outstanding with the lowest point being ~5" off the ground. This is on the pipes just before they go over the axle. I have yet to bang a pipe.

I also managed to reuse all the factory exhaust hanger points to secure the new system. I only had to custom make one new hanger, just in front of the axle as well as the pair at the tips. There are also stainless O2 bungs welded into each reducer for easy hookup to the wideband O2 at the dyno.

Thanks to everybody who offered help and advice with this project. I could not be happier with the final results.

Here are the pics of the system uninstalled:






Here are some installed pics:








Here is a shot from behind:


Click below for video:

Last edited by wrd1972; Feb 17, 2011 at 08:21 PM.
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Old Aug 25, 2009 | 01:04 PM
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sounds good. you need to do a rolling video at least so we can really hear it!
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Old Aug 25, 2009 | 02:50 PM
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Thats an extremely nice well put together set up...Very simple and functional and looks damn good...Great job! Sounds terrific too! You could market that as a kit if you wanted...

--Alan
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Old Aug 25, 2009 | 02:54 PM
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sounds sick man cary nice setup
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Old Aug 25, 2009 | 03:02 PM
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Originally Posted by ABA383
Thats an extremely nice well put together set up...Very simple and functional and looks damn good...Great job! Sounds terrific too! You could market that as a kit if you wanted...

--Alan
Thanks.
I have been on pins and needles here at work recently. They just cut my department by over 50%, but i survived.

If i did lose my job. I would certainly consider jigging mine up and semi-mass producing them. Of course for a very hefty fee.

I have had two folks contact me to build them the system. Could not agree on the price.

Last edited by wrd1972; Aug 25, 2009 at 08:05 PM.
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Old Aug 25, 2009 | 03:07 PM
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Awesome set up dude.
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Old Aug 25, 2009 | 03:24 PM
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well done! looks like decent ground clearance and can be easily removed if needed. very clean. I bet it wasnt cheap to build either, all the ss pipe, ss clamps, etc. sounds great!
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Old Aug 25, 2009 | 03:28 PM
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Nice job man! sounds good too! now get some driving vids
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Old Aug 25, 2009 | 04:32 PM
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That is the best looking true dual setup that I have ever seen on a F-Body. Very good work! And she sounds WICKED!!!!!!
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Old Aug 25, 2009 | 04:35 PM
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Looks awesome!
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Old Aug 25, 2009 | 04:37 PM
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Looks great!! Hello from a fellow kentucky/lexingtoner..
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Old Aug 25, 2009 | 04:56 PM
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Nice!
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Old Aug 25, 2009 | 04:59 PM
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Looks great.

Question..what kind of Headers do you have? The Drivers side comes out like a LS Header.
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Old Aug 25, 2009 | 05:15 PM
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Originally Posted by the_merv
Looks great.

Question..what kind of Headers do you have? The Drivers side comes out like a LS Header.
Those are the stainless LPP headers like are heavily talked about here on the board.
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Old Aug 25, 2009 | 05:29 PM
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I want that setup on my car lol, very nice. By far the best true dual setup I have seen!
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Old Aug 25, 2009 | 05:39 PM
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Originally Posted by Rafedial
I bet it wasnt cheap to build either, all the ss pipe, ss clamps, etc. sounds great!
Fortunately, I got all the Magnaflow materials at cost. The Dynomax cutout pipes, the QTP e-cutouts and the Woolf tight radius L bends were regular mail order price price. This all added up to about $650.00 IIRC.

The cutouts and pipes were another $450.00 IIRC. Of course these are considered optional.

I managed to sell my Borla adjustable catback for $500 and two LPP ORY pipes for another $250. So you can see that went a long way in covering some of the expense of the TD's.
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Old Aug 25, 2009 | 06:04 PM
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Yeah I know its not an inexpensive endevour, but well worth it...Mine is all stainless 3" with a custom X thru the dip in the Spohn TA and into Edelbrock stainless SDT 304s then routed out the sides thru oval stainless tips...I stopped counting the $$, but its cool...

--Alan
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Old Aug 25, 2009 | 07:41 PM
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Totally bad ***!!!!!!!!!! I want one!!!!!!! Great work!!!!
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Old Aug 25, 2009 | 07:49 PM
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very well done, looks great
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Old Aug 25, 2009 | 09:11 PM
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also from lexington... ill be in town in a few weeks... we should race for the hell of it.
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