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| | | Forums66 Topics128,042 Posts1,055,516 Members48,424 | | Most Online14,466 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!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Sep 2008 Posts: 872 Shop Shark | | Shop Shark Joined: Sep 2008 Posts: 872 | My truck originally had an early 235 with the straight down exhaust manifold. The 58 motor I am using has the exhaust manifold angled to the rear (about 30deg??)
Where can I get an exhaust pipe with the proper connection that I can weld onto the original exhuast pipe that routes to the muffler?
I need like the drop and the 90 deg bend. Don't want to use flex tube.
Any sources???
Thanks!! | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | make a 'template' the needed shape & length with a piece of stiff wire and get a section cut and bent at your local exhaust shop
Bill | | | | | Joined: Nov 2006 Posts: 2,544 Shop Shark | | Shop Shark Joined: Nov 2006 Posts: 2,544 | You might want to check things to make sure you can clear everything using that manifold on your truck. Clutch linkage ect... | | | | | Joined: Oct 2012 Posts: 182 'Bolter | | 'Bolter Joined: Oct 2012 Posts: 182 | The angled manifold makes the exhaust pipe interfere with the steering box adjuster bolt on civilian art deco trucks (Not sure about military). Looked at pictures of 235 conversions on the internet and noticed some people hammered a flat in the exhaust pipe to provide clearance. Looks a bit tacky, so I used the 216 manifolds when putting a 1959 engine in my suburban. I ground out the ports in the manifolds to match the head. | | | | | Joined: Oct 2000 Posts: 112 Shop Shark | | Shop Shark Joined: Oct 2000 Posts: 112 | Use the straight down manifold with new engine, look at and measure both to compare. I think will swap out and work OK. 235 old 235 new I don't think too much difference in manifold other than one straight one angled. jbennett | | | | | Joined: Sep 2008 Posts: 872 Shop Shark | | Shop Shark Joined: Sep 2008 Posts: 872 | The 58 motor has the 848 heads and the early manifold I have does not fit the later head. So I have to use the angled manifold. No clearance issues for the steering box. The other 235 I have is a 52 truck motor.. the exhaust manifold is held on with bolts on the ends vs the 848 head that has locating dowels.
The 'local muffler shop' went out of business years ago. Since I have a good exhaust (except for the bend up to the manifold) I was hoping there was a place to just buy the right manifold flange and a short pipe section and weld it up.
Last edited by pfarber; 12/17/2014 6:57 AM.
| | | | | Joined: Nov 2006 Posts: 2,544 Shop Shark | | Shop Shark Joined: Nov 2006 Posts: 2,544 | The locating dowels are threaded in, put a vice grip on them and turn them out. Then you can use a bolt. The '52 manifold will work. | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | I agree with Don regarding dowel/bolt (the dowel at each end was standard), and I am almost certain that the older (straight-down) exhaust manifold should bolt on.
| | | | | Joined: Oct 2000 Posts: 112 Shop Shark | | Shop Shark Joined: Oct 2000 Posts: 112 | | | | | | Joined: Sep 2008 Posts: 872 Shop Shark | | Shop Shark Joined: Sep 2008 Posts: 872 | Ok so I *could* use the old manifold. Thanks for that.. I have a spare now.
But the question is:
Where can I get the flange adapter to weld up my own? Local muffler shop does not exist (well, 15 years ago it it did).
Is there a part (just the flange and donut) that I can order? Anyone know in Central PA where I could get one? I have an exhaust I can use as a pattern if there is a place that can bend them from an original. | | | | | Joined: Nov 2006 Posts: 2,544 Shop Shark | | Shop Shark Joined: Nov 2006 Posts: 2,544 | I got one last summer from the local CarQuest auto parts store. My truck used a flat gasket and not a donut which I also bpught from them. | | | | | Joined: Feb 2013 Posts: 9 New Guy | | New Guy Joined: Feb 2013 Posts: 9 | Look for WALKER Part # 31851.
Thanks, | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | The early 235 that pfarber is dealing with is most likely the earlier style exhaust manifold which used a doughnut/donut seal.
I have successfully used a donut-style seal on a donut exhaust-manifold and the newer-style flat-gasket exhaust pipe; but, I have not successfully used a flat gasket between a donut-manifold/donut-exhaust-pipe combination.
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