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#1 |
Registered User
Join Date: Jul 2007
Location: Mendenhall MS
Posts: 222
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Rams Horn Manifolds
Been perusing the site a while and it seems to me that folks here sort of favor these rams horn manifolds. I think I've figured out what a rams horn manifold is, but I'm wondering why they're desired? Is it because of the fit in our old trucks or does it have something to do with performance. It seems to me, just from studying the differences in the manifolds that a rear dump manifold would be a better fit but I'm not sure.
Can someone please elaborate on this for me?
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Baby John & Tyler Shows My son and I are resto-rodding a '72 GMC Stepside |
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#2 |
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Join Date: Feb 2009
Location: OKC OK
Posts: 489
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Re: Rams Horn Manifolds
They came stock, my 71 has the rear angled ones, as do many, or so I have heard. The guys with manual transmissions like them because they flow well, and they fit, with the stock clutch Z-bar location it makes header fitment difficult at best. The general consensus is Rams Horns are a little more restrictive than headers, but seal up real well and dont develop leaks often associated with headers, In the end I guess it just depends on what you are after.
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"You can put lipstick on a pig, sure it's pretty pig, but it's still just a PIG... ![]() 71 ![]() Last edited by UltraBlue71; 11-03-2009 at 12:23 PM. |
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#3 | |
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Join Date: Jul 2007
Location: Mendenhall MS
Posts: 222
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Re: Rams Horn Manifolds
Quote:
Just read this thread a little closer. Am I to understand that there are some ram horn manifolds that dump straight down and some that dump slightly to the rear?
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Baby John & Tyler Shows My son and I are resto-rodding a '72 GMC Stepside |
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#4 |
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Join Date: Jan 2006
Location: Take Off
Posts: 1,908
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Re: Rams Horn Manifolds
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#5 | |
Registered User
Join Date: Jul 2007
Location: Mendenhall MS
Posts: 222
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Re: Rams Horn Manifolds
Quote:
Uh, oh, sorry, missed your first post about the interference with the cross member. Can anyone dispute that theory? Will the Corvette Ram Horn manifolds work on a '72 GMC?
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Baby John & Tyler Shows My son and I are resto-rodding a '72 GMC Stepside Last edited by Baby John; 11-03-2009 at 04:59 PM. |
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#6 |
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Join Date: May 2009
Location: Eliot, Maine
Posts: 1,314
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Re: Rams Horn Manifolds
the stock ram horns are inexpensive, especially because they come with the vehicle.....they are rugged and provide better low end performance than most headers. also, as previously mentioned they fit better. get them ceramic coated and they look good.....less "busy" looking than headers, but to each his own.....
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#7 |
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Join Date: Jul 2007
Location: Mendenhall MS
Posts: 222
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Re: Rams Horn Manifolds
Thanks. I now have a set of headers that aren't leaking but for some reason I like the stock exhaust manifolds better. The ram horns seem to look better to me than the rear dump manifolds, but they seem like they'd block access to the starter. I'm running a SB350 Crate motor now that's probably 7 or 8 years old. I know nothing else about the motor. If I were in the market for ram horn manifolds is there a specific block casting that I need to check for to make sure they'll fit, or would any SB350 manifolds work?
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Baby John & Tyler Shows My son and I are resto-rodding a '72 GMC Stepside |
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#8 |
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Join Date: Aug 2008
Location: Schererville, IN
Posts: 110
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Re: Rams Horn Manifolds
When I looked into this a few months ago, the consencus was that if you are in the market, try to find them off of a corvette because they are 2.5" as opposed to our 2"
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#9 |
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Join Date: Jul 2007
Location: Mendenhall MS
Posts: 222
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Re: Rams Horn Manifolds
I saw something similar on a Jaguar forum. So am I correct that the ram horn manifolds are what we prefer? And specifically those for a corvette? What about fitting a 350? Are they all the same?
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Baby John & Tyler Shows My son and I are resto-rodding a '72 GMC Stepside |
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#10 |
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Join Date: Jan 2006
Location: Take Off
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Re: Rams Horn Manifolds
I have been told that the 2.5 inch outlet straight dump Vette ramshorns will interfere with the crossmember on a 2wd. Not sure if this is correct, though.
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#11 |
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Join Date: Feb 2009
Location: OKC OK
Posts: 489
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Re: Rams Horn Manifolds
I dont think I would mess with a set that werent angled to the rear, If you know they will fit why mess with striaght ones? Unless you like the way they look better I suppose. A friend tried to sell me a set of straight ones the otherday, I broke a dog-ear off one of mine and need a repalcement. OBTW Watch out for the ones with the big ugly attachment point built in that you may not need, its on forward facing part of the drivers side manifold...Are you are taking it to an exhaust shop to have it done? ask them thier opinion, look em over real good for cracks/thread serviceability prior to buying used ones, You could helicoil one I suppose, but if its cracked its a goner being cast iron and all....
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"You can put lipstick on a pig, sure it's pretty pig, but it's still just a PIG... ![]() 71 ![]() Last edited by UltraBlue71; 11-03-2009 at 06:00 PM. |
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#12 |
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Re: Rams Horn Manifolds
Dorman sells the 2.5 inch straight dump Vette versions for a good price, less than $100 a pair new but I believe they have the ugly alternator bracket built in. I have seen guys cut it off, though. If they will fit, the 2.5 inch vette straight dumps should flow better than the smaller diameter oem angled ones that came with our trucks.
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#13 | ||
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Join Date: Jul 2006
Location: Central PA
Posts: 12,201
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Re: Rams Horn Manifolds
Quote:
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I think 62/63 vettes with HO 327's had them.. few other years if you research them for 2.5" $55 at rockauto.com or you can get them from your local auto parts store
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The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer" Last edited by msgross; 11-03-2009 at 07:17 PM. |
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#14 |
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Location: tennessee
Posts: 159
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Re: Rams Horn Manifolds
Somebody on this site
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#15 |
Registered User
Join Date: Mar 2009
Location: Fayetteville, Arkansas
Posts: 61
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Re: Rams Horn Manifolds
I read about these in another thread....
Stainless ram horns.... http://www.speedwaymotors.com/Stainl...olds,5425.html Cast iron set.... http://www.speedwaymotors.com/Small-...olds,3823.html 2.5'' Corvette ram horns with the ugly bracket.... http://www.speedwaymotors.com/25-Inc...olds,9133.html |
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#16 |
Registered User
Join Date: Feb 2009
Location: OKC OK
Posts: 489
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Re: Rams Horn Manifolds
[QUOTE=K.ronic;3601739]I read about these in another thread....
Now those Polished S/S are PURDY! I wish I had 5 bennies to plop down for a pair!
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