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12-20-2003, 01:04 PM
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#1 |
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Pesemistic Optimist
Join Date: Dec 2002
Location: Prineville, Oregon
Posts: 227
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Exhaust Manifolds
Yanked the motor out of my K20 and am having a new one built.
Started cleaning things up for the re-install and noticed that both of my exhaust manifolds are stamped RH. Looked up the numbers on them 3932461 (RH3) and 3932465 (RH39) and found nothing. Are these correct or did someone replace them incorrectly? The reason i'm asking is one is broke and I need a new one. Thanks again, Dan. |
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12-20-2003, 01:30 PM
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#2 |
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Cause the Chicks DIG IT!!
Join Date: Nov 2003
Location: Beaufort SC
Posts: 509
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what type of exhaust manifold do you have? is it the ramhorn that comes straight down or the ramhorn that goes to the rear? sounds funny but i guess as long as they were working thats what counts so if you got one thats broke I'd just replace it with one like it.
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12-20-2003, 01:43 PM
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#3 |
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Pesemistic Optimist
Join Date: Dec 2002
Location: Prineville, Oregon
Posts: 227
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They're the ones that come straight down.
That was my line of thinking also, since i'll be going to headers shortly. Dan. |
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12-20-2003, 08:02 PM
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#4 |
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Cause the Chicks DIG IT!!
Join Date: Nov 2003
Location: Beaufort SC
Posts: 509
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Broken exhaust es what made me finally go to headers. I don't care what anybody says about 79 dollar cheapies. My flowtechs work like a champ!!!
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12-20-2003, 08:23 PM
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#5 |
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Self-proclaimed LED man
Join Date: Nov 2003
Location: Harrisburg, Missouri
Posts: 1,021
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I like the idea of headers, but i dont want to have to worry about exhaust leaks and rusty headers, they dont look good.
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My LED Website My Photobucket Album of LED's Ask me about hand-made custom L.E.D brake and reverse lights. <- LINK I also do LED: -Third Brake/Cargo -Brake (truck and burb) -Reverse (truck and burb) -67-68 Front Turn Signals -69-70 Front Turn Signals -71-72 Front Turn Signals -GMC Front Turn Signals I can also do custom lights for other vehicles....i did a set for a AMC Gremlin once  Norwood Survivor |
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12-20-2003, 08:41 PM
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#6 |
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Registered User
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,507
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Straight dump ramhorns are interchageabe left to right unless there is some kind of alternator or other accessory mount cast onto it.
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Tim |
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12-21-2003, 12:23 AM
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#7 |
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Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,948
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yea rusty exhaust manifolds look sooo much better than rusty headers. get ceramic coated headers and they wont rust
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Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. |
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12-21-2003, 02:05 AM
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#8 |
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user # 2756
 
Join Date: Jun 2001
Location: Chesapeake, Virginia
Posts: 4,612
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Dan are you running a 4 speed or auto tranny? Make sure you get headers that will clear the z-bar if you have the SM465 4 speed. I went with the corvette ramhorns and 2.5" exhaust (stock ramhorns are 2").
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1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm 
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12-21-2003, 12:44 PM
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#9 |
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Pesemistic Optimist
Join Date: Dec 2002
Location: Prineville, Oregon
Posts: 227
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I'm running a 350/350/205 setup. When I get headers i'm looking at either Hooker Comps or Dynomax for the Chevelle. I might go for a set of shorties too, any recommendations?
Dan. |
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12-21-2003, 01:21 PM
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#10 |
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"Ochre Ogre"
Join Date: Apr 2000
Location: Springfield, MN
Posts: 3,558
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Here's a suggestion. Skip the headers and buy yourself a pair of Covette 2-1/2" rams horns. Direct bolt on, same location for your pipes just need bigger pipes, and not a problematic as headers.
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Bowtie Truck Stop Inc. Mid-West GM Truck Restoration Parts Supplier Your Key Parts, Auto Metal Direct, Dynacorn, and Goodmark dealer. like us @ www.facebook.com/BowtieTruckStop 1971 C-10 Suburban (Ochre) 1971 K-10 Suburban (Ochre) 1972 C-10 Suburban (Ochre) 1972 K-20 Suburban (Yellow- that just aint right!) Springfield, Minnesota 56087 |
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