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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Feb 2009 Posts: 26 Apprentice | | Apprentice Joined: Feb 2009 Posts: 26 | Im looking for a thread that shows how to modify a stock exhause manifold to make it into dual exhaust. I tried the search function but dont even know where to begin.
Rust Lover
| | | | | Joined: Feb 2008 Posts: 829 Shop Shark | | Shop Shark Joined: Feb 2008 Posts: 829 | | | | | | Joined: Jan 2008 Posts: 360 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 360 | curt b does some nice work. i am saving this link. does it matter which side of the manifold you modify? i think this is the first one i have seen modified towards the front of the manifold. all the others i have seen, including gm originals have the second exhaust flange on the rear of the manifold. just wondering?? original http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=320329909351&sspagename=STRK%3AMEWAX%3AIT&viewitem= self modified http://cgi.ebay.com/ebaymotors/HOT-...torsQ5fCarQ5fTruckQ5fPartsQ5fAccessoriesTHESE LINKS ARE FOR REFERENCE ONLY!! big ed
"it's only old if you can't find a use for it; otherwise it's cool and i'll use it."
| | | | | Joined: Mar 2005 Posts: 1,513 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 1,513 | Thank’s Big Ed. My criteria for a second outlet is to duplicate the stock one as much as possible and front dump leaves the most room for a column shift application. If it’s flanged, studded, beveled, and of equal size I can’t see why it would show anything different from the vette one on a dyno. I need instant driveability with my truck to enjoy it as a daily summer driver so the heat riser system is a must for me especially with a pair of 235 size carbs, a northern climate, lots of altitude, and now an anti-idling bylaw. In fabricating one my best advise is to insure the additional outlet allows for removal/replacement of the weight for welding clearance. I have a rear dump one for a side mount car and maybe a 292 version to do in my near future and will add anything I learn about those. http://rides.webshots.com/photo/2611187020023244788cCGtIYI don’t weld these myself. A friend/co- worker with 30+ years of B pressure yearly certification enjoys the distraction of some old school stuff however the right rod and procedure will work for anybody with the patience to do a good fit up. 2” heavy wall gasfitter elbows are common as dirt and there’s no shortage of people with the welding skills so I don’t understand why this isn’t more common.  http://rides.webshots.com/photo/2161711250023244788PcOIEW
1952 1300 Canadian 1/2 ton restomod You Tube | | |
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