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03-11-2008, 10:06 PM
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#1 |
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Justified!
Join Date: Apr 2007
Location: Valencia, Ca
Posts: 1,366
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What exhaust to use?
I finally have my 64 running again after a 2 year rebuild.....
 350 TPI, 700r4 conversion, disc brakes....lalalalalala... the whole works....  What is the right size exhaust to run with this engine? Does it matter? I'm thinking 2.5" with dual Flowmaster 40's........ Thanks Chad
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Chad 1964 GMC Fleetside Shortbed....350/700R4 tranny 
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03-11-2008, 10:15 PM
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#2 |
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Senior Member
Join Date: Aug 2005
Location: Greenwell Springs, Louisiana
Posts: 2,882
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Re: What exhaust to use?
Thats what I would run. I had an 84 chevy at one time with a 383 stroker turbo 350 tranny with 2 1/2 exhaust with 2 chambered flowmasters. It ran very well!!
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03-12-2008, 01:29 AM
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#3 |
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Account Suspended
Join Date: Jul 2007
Location: Plumas Lake, Ca.
Posts: 1,009
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Re: What exhaust to use?
At the very least I would (and do run) 2.25" pipe to the mufflers then 2.5" tailpipes....
On a virtually stock 5.7L TPI I would do the 2.25" all the way with an "X" pipe. 2.5" all the way is probably overkill and will hurt the low end torque. YMMV |
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03-12-2008, 02:18 AM
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#4 | |
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Registered User
 
Join Date: Aug 2005
Location: Hillsboro Oregon
Posts: 6,449
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Re: What exhaust to use?
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03-12-2008, 05:55 AM
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#5 |
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Justified!
Join Date: Apr 2007
Location: Valencia, Ca
Posts: 1,366
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Re: What exhaust to use?
Whats the point of the x-pipe.....?
I was just going to run pipes out in in front of the rear wheels......
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Chad 1964 GMC Fleetside Shortbed....350/700R4 tranny
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03-12-2008, 06:30 AM
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#6 | |
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Registered User
Join Date: Aug 2005
Location: Hillsboro Oregon
Posts: 6,449
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Re: What exhaust to use?
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03-12-2008, 09:18 AM
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#7 |
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60-66 Nut
 Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
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Re: What exhaust to use?
A few weeks ago I saw that Thrush makes a ready made mandrel bent 2.5" exhaust system listed for '66-'72 trucks. Of course we all know it will fit back to at least '63. The system comes with an 'H' pipe crossover though and of course with Thrush mufflers. I have yet to find a price on the kit, so I don't know how cost effective it is....although I haven't looked real hard either. Just thought I'd mention this here since I hadn't seen it mentioned before.
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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03-12-2008, 12:55 PM
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#8 |
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Registered User
Join Date: Sep 2006
Location: Covington, WA
Posts: 770
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Re: What exhaust to use?
I'd go 2.5 manifold back dual exhaust into some flowmaster 50 series's.
Running that on my c10 and it sounds awesome. Scares the crap out of the neighbors, which is a major bonus living in suburbia. |
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03-12-2008, 04:16 PM
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Hey Watch this...
Join Date: Sep 2007
Location: Parker, CO
Posts: 414
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Re: What exhaust to use?
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What have I gotten myself into now? 1964 Chevy Stepside - 383 hydraulic roller Vortec ... a work in progress 2000 Volvo V70R - 340awhp, 22psi, meth-injected of Porsche-eating fun. The grocery-getter on steroids |
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03-12-2008, 07:01 PM
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Registered User
Join Date: Dec 2007
Location: Palmer, Alaska
Posts: 13,821
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Re: What exhaust to use?
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__________________
 CHEVY ONLY
Last edited by joe231; 03-12-2008 at 07:02 PM. |
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03-12-2008, 07:10 PM
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#11 |
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Justified!
Join Date: Apr 2007
Location: Valencia, Ca
Posts: 1,366
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Re: What exhaust to use?
Thanks for the info......I'lll have to check into the "X" piping.....
shouldn't be too hard for the shop here to do..... Chad
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Chad 1964 GMC Fleetside Shortbed....350/700R4 tranny
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03-12-2008, 09:27 PM
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Registered User
Join Date: Aug 2005
Location: Hillsboro Oregon
Posts: 6,449
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Re: What exhaust to use?
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03-12-2008, 09:29 PM
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#13 |
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Registered User
Join Date: Sep 2007
Location: Fairdale, Kentucky
Posts: 561
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Re: What exhaust to use?
OK sounds good, got the exhaust thing down now all I need it 2 more cylinders!!!!!!!!!!
OK I will step into the puddle of *&^% called I6 and ask the same question. What size pipes should I run on this MONSTER. I'm currently working on a set up of Offenhauser dual carb set up with a set of fentons. 1.75 to mufflers and 2.00 out? Or 2.00 all the way or 1.75 all the way? Next problem is how can you make it clear the torsion bars and the frame X? So many questions in my head..... Sorry this is my 61 Burb... Last edited by soba_03; 03-12-2008 at 09:29 PM. |
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03-12-2008, 10:27 PM
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#14 | |
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Registered User
Join Date: Dec 2007
Location: Palmer, Alaska
Posts: 13,821
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Re: What exhaust to use?
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What I get from that is if I wanna run shorty headers I need to go to smaller primary tubes to keep my torque curve in roughly the same place...very interesting
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03-12-2008, 10:29 PM
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#15 | |
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Registered User
Join Date: Dec 2007
Location: Palmer, Alaska
Posts: 13,821
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Re: What exhaust to use?
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I wanna see pics of your carb and header set up, sounds sweet!
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CHEVY ONLY
Last edited by joe231; 03-12-2008 at 10:29 PM. |
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03-13-2008, 08:23 AM
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#16 |
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Registered User
Join Date: Dec 2007
Location: Kimberley, BC, Canada
Posts: 799
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Re: What exhaust to use?
On the I6, I'm running dual exhaust with 2-1/4 pipes. Nice and quiet (what I was looking for) and definitely unclogged the exhaust over the stock manifold and single pipe. I'm using Langdon's cast iron manifolds on a 250.
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Greg 64 GMC Suburban - 283, NV3500, 14 bolt 77 C10 swb - 292, SM465, 12 bolt |
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